Castle Rock, CO Internet
Internet Providers in Castle Rock, CO
Compare every internet provider in Castle Rock, CO: coverage from FCC filings, plan prices checked monthly, and an address check for your street.
The 30-Second Verdict
UpdatedRoles count plans reaching at least 5% of Castle Rock. Faster only in small pockets: Quantum Fiber Fiber 8G up to 8,000 Mbps (~1% of the city).
Xfinity is the best overall, with cable speeds up to 2,000 Mbps reaching about 24% of the city, and an overall footprint of about 87%. If Quantum Fiber reaches your address, it is the faster choice, with fiber speeds up to 2,000/1,000 Mbps reaching about 16% of the city. CenturyLink is the safe fallback where Xfinity does not reach, mostly DSL, with an overall footprint of about 95% and its fastest common DSL tier, up to 140 Mbps, reaching about 18% of the city.
In The Meadows and ZIP 80109, Xfinity leads with up to 2,000 Mbps reaching about 43% of the ZIP, while Quantum Fiber reaches about 25% with up to 2,000/1,000 Mbps. Founders Village in ZIP 80104 leans even more heavily toward Xfinity, reaching about 48%, while Quantum Fiber reaches about 18%. Terrain and ZIP 80108 show a similar pattern, with Xfinity reaching about 45% and Quantum Fiber about 22%, so Castlewood Ranch addresses still need an exact check. Kellin Communications and other fixed-wireless providers are worth considering where cable or fiber misses, but coverage and speeds vary street to street. Confirm the exact address before choosing, especially for fiber.
Best Internet Providers in Castle Rock, CO
Best plan here: 2 Gig — faster than 92% of all internet options in Colorado
- 2 Gig$100/mo for 60 months (w/ AutoPay & paperless billing, new customers, 5-Year Price Guarantee)Cable2,000 MbpsDownload92Our score$100Per month
- 1.2 Gig$100/mo for 60 months (w/ AutoPay & paperless billing, new customers, 5-Year Price Guarantee)Cable1,200 MbpsDownload88Our score$100Per month
- 1 GigCable1,000 MbpsDownload82Our score$50Per month
- 500 Mbps$45/mo for 60 months, then $55/mo (w/ AutoPay & paperless billing, new customers)Cable500 MbpsDownload78Our score$45Per month
- 300 Mbps$40/mo for 60 months (w/ AutoPay & paperless billing, new customers, 5-Year Price Guarantee)Cable300 MbpsDownload71Our score$40Per month
Source: Xfinity official site · checked monthly · availability varies by address
SPEED SCORE
Among the fastest advertised speeds in the state
This plan’s advertised maximum download ranks near the top of every option filed with the FCC in this state. It is not a measured speed.
The Speed Score is the percentile of this plan’s maximum advertised download speed among every internet option filed with the FCC in this state. It is not a measured speed test: actual throughput varies by address, wiring and time of day. Enter your full address to see which plans are serviceable at your home.
EST. CAPABILITIES
Excellent
Good
Good
Good
THE TAKEAWAY
Our recommendation for Castle Rock
Xfinity’s 1.2 Gig cable plan reaches about 85% of Castle Rock, so many households have a strong chance of qualifying, though availability still depends on the exact address. With up to 1200 Mbps download, 35 Mbps upload, and a plan Speed Score of 88/100, it is a reliable choice for most households, while Xfinity’s 92/100 headline Speed Score is above the city average of 55.
Speeds and reach below are what the provider files with the FCC for each technology tier, by census block. The plans it actually sells here, with their own speeds and prices, are under Pricing & Plans; the two can differ.
About Xfinity
Xfinity reaches 87.0% of Castle Rock, so many residents have a strong chance of getting its cable service. Where available, its cable plans offer excellent options for modern households, including up to 2 Gig, while the fastest tier is address-dependent and available to only 24.4% of the city, so check your address to see which speeds and prices you can order.
Available Plans
Cable
Cable
Fiber
Fiber
Best plan here: Fiber Internet (up to 940 Mbps) — faster than 79% of all internet options in Colorado
- Fiber Internet (up to 940 Mbps)Fiber940 MbpsDownload79Our score$75Per month
- CenturyLink Internet 100 Mbps$55/mo for 12 months (Paperless billing or prepay required; speed may not be available in your area)DSL100 MbpsDownload30Our score$55Per month
Source: CenturyLink official site · checked monthly · availability varies by address
SPEED SCORE
Mid-pack advertised speed for the state
This plan’s advertised maximum download ranks around the middle of every option filed with the FCC in this state. It is not a measured speed.
The Speed Score is the percentile of this plan’s maximum advertised download speed among every internet option filed with the FCC in this state. It is not a measured speed test: actual throughput varies by address, wiring and time of day. Enter your full address to see which plans are serviceable at your home.
EST. CAPABILITIES
Excellent
Excellent
Excellent
Excellent
THE TAKEAWAY
Our recommendation for Castle Rock
CenturyLink is a strong choice in Castle Rock, with a top Speed Score of 79/100 that is above the city average of 55. Its Fiber Internet plan is a top-tier option, offering up to 940 Mbps download and upload for $75 per month, but it is available to only about 21% of the city, so confirm fiber service at your address. Where fiber is unavailable, the 100 Mbps DSL plan has a lower Speed Score of 30/100 and limited performance compared to alternatives, making it worth checking other providers first.
Speeds and reach below are what the provider files with the FCC for each technology tier, by census block. The plans it actually sells here, with their own speeds and prices, are under Pricing & Plans; the two can differ.
About CenturyLink
CenturyLink is a good option when its fiber service is available, but the address-level availability makes a big difference. Fiber offers good, symmetrical speeds up to 940 Mbps for $75 per month and is available to about 21% of Castle Rock, while the DSL fallback reaches about 38% with speeds up to 100 Mbps down and 10 Mbps up for $55 per month, which may be adequate for basic use but limited for busy modern households. Check your address for fiber first, since the provider’s broader 95.1% coverage does not mean the faster plan is available everywhere.
Available Plans
Copper
Copper
Fiber
Copper
Copper
Fiber
Copper
Copper
Fiber
Copper
Fiber
Fiber
Fiber
Fiber
Best plan here: Fiber 2G — faster than 92% of all internet options in Colorado
Badge = fastest plan reaching at least 5% of the city. Fiber 8G scores higher but reaches ~1%.
- Fiber 8GFiber8,000 MbpsDownload99Our score$165Per month
- Fiber 3GFiber3,000 MbpsDownload98Our score$70Per month
- Fiber 2GFiber2,000 MbpsDownload92Our score$70Per month
- Fiber 1 GigFiber940 MbpsDownload79Our score$80Per month
- Fiber 500Fiber500 MbpsDownload78Our score$50Per month
Source: Quantum Fiber official site · checked monthly · availability varies by address
SPEED SCORE
Among the fastest advertised speeds in the state
This plan’s advertised maximum download ranks near the top of every option filed with the FCC in this state. It is not a measured speed.
The Speed Score is the percentile of this plan’s maximum advertised download speed among every internet option filed with the FCC in this state. It is not a measured speed test: actual throughput varies by address, wiring and time of day. Enter your full address to see which plans are serviceable at your home.
EST. CAPABILITIES
Excellent
Excellent
Excellent
Excellent
THE TAKEAWAY
Our recommendation for Castle Rock
Fiber is an excellent choice for low-latency gaming, streaming, video calls, and busy households. Quantum Fiber’s headline Speed Score is 92/100, above Castle Rock’s city average of 55, with the Fiber 2G plan offering up to 2,000 Mbps download and 1,000 Mbps upload for $70 per month. Availability is address-specific, and Fiber 2G reaches about 16% of the city, so confirm that this top-tier option is offered at your address.
Speeds and reach below are what the provider files with the FCC for each technology tier, by census block. The plans it actually sells here, with their own speeds and prices, are under Pricing & Plans; the two can differ.
About Quantum Fiber
Quantum Fiber’s fiber service offers excellent performance for modern needs, including symmetrical speeds up to 8,000 Mbps, with strong options for streaming, gaming, work, and large households. Availability depends heavily on the address: the up to 2,000 Mbps Fiber 2G plan reaches about 16% of Castle Rock, while the up to 940 Mbps Fiber 1 Gig and up to 500 Mbps Fiber 500 plans reach about 25% and offer reliable fiber performance, so check your address to see which tier is available.
Available Plans
Fiber
Fiber
Fiber
Fiber
Thrive Broadband
Speeds up to 2,000 Mbps
Price Not listed
Speed Score: Faster than 92% of all internet options in Colorado
SPEED SCORE
Among the fastest advertised speeds in the state
This plan’s advertised maximum download ranks near the top of every option filed with the FCC in this state. It is not a measured speed.
The Speed Score is the percentile of this plan’s maximum advertised download speed among every internet option filed with the FCC in this state. It is not a measured speed test: actual throughput varies by address, wiring and time of day. Enter your full address to see which plans are serviceable at your home.
EST. CAPABILITIES
Excellent
Excellent
Excellent
Excellent
THE TAKEAWAY
Our recommendation for Castle Rock
For shoppers weighing monthly cost against performance, Thrive Broadband offers an excellent fiber choice with up to 2000 Mbps download and upload speeds and a Speed Score of 92/100, available to about 2% of Castle Rock. Its up to 1000 Mbps symmetrical fiber plan also scores 82/100 and reaches about 1% of the city. Fiber availability is address-dependent, so confirm which plan reaches your home before choosing.
Speeds and reach below are what the provider files with the FCC for each technology tier, by census block. The plans it actually sells here, with their own speeds and prices, are under Pricing & Plans; the two can differ.
About Thrive Broadband
At the monthly price quoted, Thrive Broadband offers excellent value with fiber speeds up to 2,000 Mbps both ways, with a Speed Score of 92/100. Fiber is available to about 2% of Castle Rock census blocks for the fastest plan and about 1% for the up to 1,000 Mbps plan, so it is worth checking your address because these strong options are highly location-dependent.
Available Plans
Fiber
Fiber
Kellin Communications
Speeds up to 300 Mbps
Plans start at $49.99 /mo *
Speed Score: Faster than 71% of all internet options in Colorado
SPEED SCORE
Mid-pack advertised speed for the state
This plan’s advertised maximum download ranks around the middle of every option filed with the FCC in this state. It is not a measured speed.
The Speed Score is the percentile of this plan’s maximum advertised download speed among every internet option filed with the FCC in this state. It is not a measured speed test: actual throughput varies by address, wiring and time of day. Enter your full address to see which plans are serviceable at your home.
EST. CAPABILITIES
Good
Adequate
Adequate
Good
THE TAKEAWAY
Our recommendation for Castle Rock
Kellin Communications’ up to 300 Mbps download and 50 Mbps upload fixed wireless plan reaches about 85% of Castle Rock, giving many local addresses a reasonable chance of availability. Its 71/100 Speed Score is above the city’s average top speed score of 55, making it competitive, although fixed wireless can be more variable than wired service. Your address determines whether this 300/50 plan or the lower 100/20 Mbps option with a 30/100 Speed Score is available, so check the exact plan offered before signing up.
Speeds and reach below are what the provider files with the FCC for each technology tier, by census block. The plans it actually sells here, with their own speeds and prices, are under Pricing & Plans; the two can differ.
About Kellin Communications
Kellin Communications reaches about 89% of Castle Rock, so it is worth checking your address for availability. Its best option is licensed fixed wireless with speeds up to 300 Mbps download and 50 Mbps upload, available to about 85% of census blocks and offering good performance, but some addresses may only qualify for up to 100 Mbps download and 20 Mbps upload, available to about 4%, which may feel limiting for modern households.
Available Plans
Licensed Fixed Wireless
Licensed Fixed Wireless
Best plan here: 5G Home — faster than 71% of all internet options in Colorado
- 5G Home$60/mo for 12 months (w/ Auto Pay & postpaid mobile unlimited plan that includes 5G Ultra Wideband; requires bundle)5G Fixed Wireless300 MbpsDownload71Our score$60Per month
Source: Verizon official site · checked monthly · availability varies by address
SPEED SCORE
Mid-pack advertised speed for the state
This plan’s advertised maximum download ranks around the middle of every option filed with the FCC in this state. It is not a measured speed.
The Speed Score is the percentile of this plan’s maximum advertised download speed among every internet option filed with the FCC in this state. It is not a measured speed test: actual throughput varies by address, wiring and time of day. Enter your full address to see which plans are serviceable at your home.
EST. CAPABILITIES
Good
Adequate
Adequate
Good
THE TAKEAWAY
Our recommendation for Castle Rock
Verizon’s 5G Home fixed wireless service offers up to 300 Mbps download and 75 Mbps upload, which is adequate for streaming, video calls, and everyday online use, with a Speed Score of 71/100 that is above Castle Rock’s city average. Fixed wireless performance can vary more than wired connections, and this plan is available to 65.2% of the city, so verify service at your address before signing up.
Speeds and reach below are what the provider files with the FCC for each technology tier, by census block. The plans it actually sells here, with their own speeds and prices, are under Pricing & Plans; the two can differ.
About Verizon
Verizon’s 5G fixed wireless service offers up to 300 Mbps download and 75 Mbps upload, which is a good fit for streaming, video calls, and everyday browsing, though performance can vary with wireless conditions. The plan is available to about 65% of Castle Rock, and its $60 monthly price for 12 months requires Auto Pay plus a qualifying postpaid unlimited mobile plan, so check your address and bundle eligibility before choosing it.
Available Plans
Licensed Fixed Wireless
Licensed Fixed Wireless
Xtream Internet
Speeds up to 100 Mbps
Price Not listed
Speed Score: Slower than 70% of all internet options in Colorado
SPEED SCORE
Below-average advertised speed for the state
This plan’s advertised maximum download ranks below most options filed with the FCC in this state. It is not a measured speed; faster plans are usually listed here.
The Speed Score is the percentile of this plan’s maximum advertised download speed among every internet option filed with the FCC in this state. It is not a measured speed test: actual throughput varies by address, wiring and time of day. Enter your full address to see which plans are serviceable at your home.
EST. CAPABILITIES
Good
Adequate
Adequate
Adequate
THE TAKEAWAY
Our recommendation for Castle Rock
Xtream Internet’s Lbr Fixed Wireless plan reaches 73.3% of Castle Rock, giving many households a reasonable chance of qualifying. It offers up to 100 Mbps download and 40 Mbps upload with a Speed Score of 30/100, below the city average top speed score of 55, so performance is limited compared with alternatives and checking other providers first is advisable. Availability and actual performance still depend on your specific address.
Speeds and reach below are what the provider files with the FCC for each technology tier, by census block. The plans it actually sells here, with their own speeds and prices, are under Pricing & Plans; the two can differ.
About Xtream Internet
Xtream Internet reaches about 73% of Castle Rock, so many residents may be able to order it. Its available option here is fixed wireless with up to 100 Mbps download and 40 Mbps upload, which is adequate for basic browsing and some streaming but may feel limited for busy households, so check your address for faster cable or fiber service first.
Available Plans
Lbr Fixed Wireless
Best plan here: T-Mobile Amplified Home Internet 500 Mbps — faster than 78% of all internet options in Colorado
- T-Mobile Amplified Home Internet 500 Mbps$45/mo for 12 months, then $60/mo (new Internet line, qualifying credit, postpaid voice line required; requires bundle) · $200 virtual prepaid MastercardFixed Wireless500 MbpsDownload78Our score$45Per month
- T-Mobile All-In Home Internet 500 Mbps$55/mo for 12 months, then $70/mo (new Internet line, qualifying credit, postpaid voice line required; requires bundle) · $200 virtual prepaid MastercardFixed Wireless500 MbpsDownload78Our score$55Per month
- T-Mobile Rely Home Internet 400 Mbps$35/mo for 12 months, then $50/mo (qualifying credit, postpaid voice line, and new Internet line required; requires bundle) · $200 virtual prepaid MastercardFixed Wireless400 MbpsDownload78Our score$35Per month
Source: T-Mobile official site · checked monthly · availability varies by address
SPEED SCORE
Mid-pack advertised speed for the state
This plan’s advertised maximum download ranks around the middle of every option filed with the FCC in this state. It is not a measured speed.
The Speed Score is the percentile of this plan’s maximum advertised download speed among every internet option filed with the FCC in this state. It is not a measured speed test: actual throughput varies by address, wiring and time of day. Enter your full address to see which plans are serviceable at your home.
EST. CAPABILITIES
Good
Adequate
Adequate
Good
THE TAKEAWAY
Our recommendation for Castle Rock
For households seeking affordable internet for streaming, work, and everyday use, T-Mobile is a competitive fixed wireless choice, with plans offering up to 500 Mbps download and 60 Mbps upload and a Speed Score of 78/100, above Castle Rock’s city average of 55. Fixed wireless can be more variable than wired service, so performance may depend on local network conditions and your exact address. The 500 Mbps plans are available to about 52% of the city, with pricing and eligibility tied to a qualifying voice bundle.
Speeds and reach below are what the provider files with the FCC for each technology tier, by census block. The plans it actually sells here, with their own speeds and prices, are under Pricing & Plans; the two can differ.
About T-Mobile
T-Mobile is a good fit for households that want solid everyday performance, with fixed wireless plans offering up to 500 Mbps download and up to 60 Mbps upload, plus a Speed Score of 78/100. The best 500 Mbps options are available to about 52% of Castle Rock, so availability is address-dependent, and you should confirm eligibility and compare any faster fiber or cable options before choosing, since fixed wireless can be less consistent than wired service.
Available Plans
Licensed Fixed Wireless
Licensed Fixed Wireless
Best plan here: AT&T Internet Air 300 Mbps — faster than 71% of all internet options in Colorado
- AT&T Internet Air 300 Mbps$40/mo for 12 months (new customers, no annual contract, AutoPay eligible for additional $5/mo discount)Fixed Wireless300 MbpsDownload71Our score$40Per month
Source: AT&T official site · checked monthly · availability varies by address
SPEED SCORE
Mid-pack advertised speed for the state
This plan’s advertised maximum download ranks around the middle of every option filed with the FCC in this state. It is not a measured speed.
The Speed Score is the percentile of this plan’s maximum advertised download speed among every internet option filed with the FCC in this state. It is not a measured speed test: actual throughput varies by address, wiring and time of day. Enter your full address to see which plans are serviceable at your home.
EST. CAPABILITIES
Good
Adequate
Adequate
Good
THE TAKEAWAY
Our recommendation for Castle Rock
At $40/mo for 12 months, AT&T Internet Air offers up to 300 Mbps download and 30 Mbps upload, a useful value for everyday browsing, streaming, and work from home. Its Speed Score of 71/100 is above Castle Rock’s city average of 55, though fixed wireless can be more variable than wired service. Availability depends on your address, with this plan reaching 20.5% of the city, so check what technology and alternatives are available at your location.
Speeds and reach below are what the provider files with the FCC for each technology tier, by census block. The plans it actually sells here, with their own speeds and prices, are under Pricing & Plans; the two can differ.
About AT&T
At $40 per month for 12 months, AT&T Internet Air offers good value with up to 300 Mbps download and 30 Mbps upload, making it suitable for streaming, video calls, and everyday household use. It is a fixed wireless plan with a good 71/100 Speed Score, but availability reaches only about 21% of Castle Rock, so check your address first and compare faster wired options if they are available.
Available Plans
Licensed Fixed Wireless
Licensed Fixed Wireless
Viaero Wireless
Speeds up to 25 Mbps
Plans start at $50 /mo *
Speed Score: Slower than 94% of all internet options in Colorado
SPEED SCORE
Below-average advertised speed for the state
This plan’s advertised maximum download ranks below most options filed with the FCC in this state. It is not a measured speed; faster plans are usually listed here.
The Speed Score is the percentile of this plan’s maximum advertised download speed among every internet option filed with the FCC in this state. It is not a measured speed test: actual throughput varies by address, wiring and time of day. Enter your full address to see which plans are serviceable at your home.
EST. CAPABILITIES
Adequate
Poor
Adequate
Poor
THE TAKEAWAY
Our recommendation for Castle Rock
Viaero Wireless’s Lbr Fixed Wireless plan reaches just 1.4% of Castle Rock, so availability is limited and your address must be checked. With speeds up to 25 Mbps download and 5 Mbps upload and a Speed Score of 6/100, it offers limited performance compared with alternatives, so consider checking what else is available at your address first.
Speeds and reach below are what the provider files with the FCC for each technology tier, by census block. The plans it actually sells here, with their own speeds and prices, are under Pricing & Plans; the two can differ.
About Viaero Wireless
Viaero Wireless reaches only a very small part of Castle Rock, so most shoppers have a low chance of being able to order it. Where available, its fixed wireless plan offers up to 25 Mbps download and 5 Mbps upload, which is below average and may feel limiting for modern households, so check for faster internet options at your address first.
Available Plans
Lbr Fixed Wireless
Best plan here: Residential Max 400 Mbps — faster than 78% of all internet options in Colorado
- Residential Max 400 MbpsSatellite400 MbpsDownload78Our score$130Per month
- Residential 200 MbpsSatellite200 MbpsDownload56Our score$85Per month
- Residential 100 MbpsSatellite100 MbpsDownload30Our score$55Per month
Source: Starlink official site · checked monthly · availability varies by address
SPEED SCORE
Mid-pack advertised speed for the state
This plan’s advertised maximum download ranks around the middle of every option filed with the FCC in this state. It is not a measured speed.
The Speed Score is the percentile of this plan’s maximum advertised download speed among every internet option filed with the FCC in this state. It is not a measured speed test: actual throughput varies by address, wiring and time of day. Enter your full address to see which plans are serviceable at your home.
EST. CAPABILITIES
Adequate
Poor
Poor
Adequate
THE TAKEAWAY
Our recommendation for Castle Rock
Satellite service can handle everyday browsing, streaming, and video calls, but its higher latency may be noticeable for gaming and other real-time uses. Starlink’s Residential Max plan offers up to 400 Mbps download and 40 Mbps upload for $130 per month, with a Speed Score of 78/100, above Castle Rock’s city average of 55. It is listed as available to 100.0% of the city, though checking other options at your address is worthwhile if low latency is a priority.
Speeds and reach below are what the provider files with the FCC for each technology tier, by census block. The plans it actually sells here, with their own speeds and prices, are under Pricing & Plans; the two can differ.
About Starlink
Starlink uses satellite internet, which provides broad reach and can handle everyday browsing, streaming, and work, though satellite latency may be noticeable for gaming or video calls. Its Residential Max 400 Mbps plan offers up to 400 Mbps download and 40 Mbps upload for $130 per month, with a Speed Score of 78/100 and availability to 100.0% of Castle Rock, but check for fiber or cable at your address first because those technologies are generally a better fit for demanding modern use.
Available Plans
Ngso Satellite
Best plan here: Fusion — slower than 70% of all internet options in Colorado
- Fusion$94.99/mo for the first 12 months, then $119.99/moSatellite100 MbpsDownload30Our score$94.99Per month
- Select$49.99/mo for the first 12 months, then $74.99/moSatellite50 MbpsDownload17Our score$49.99Per month
- Lite$39.99/mo for the first 12 months, then $49.99/moSatellite25 MbpsDownload6Our score$39.99Per month
Source: HughesNet official site · checked monthly · availability varies by address
SPEED SCORE
Below-average advertised speed for the state
This plan’s advertised maximum download ranks below most options filed with the FCC in this state. It is not a measured speed; faster plans are usually listed here.
The Speed Score is the percentile of this plan’s maximum advertised download speed among every internet option filed with the FCC in this state. It is not a measured speed test: actual throughput varies by address, wiring and time of day. Enter your full address to see which plans are serviceable at your home.
EST. CAPABILITIES
Poor
Poor
Poor
Poor
THE TAKEAWAY
Our recommendation for Castle Rock
At $94.99/mo for the first 12 months, then $119.99/mo, Fusion buys up to 100 Mbps download and 5 Mbps upload, but its 30/100 Speed Score is below Castle Rock’s city average of 55. Satellite service is broadly available at 100.0% of the city, but its higher latency and limited performance make it worth checking what other technologies are available at your address first.
Speeds and reach below are what the provider files with the FCC for each technology tier, by census block. The plans it actually sells here, with their own speeds and prices, are under Pricing & Plans; the two can differ.
About HughesNet
HughesNet costs $39.99 to $94.99 per month for the first 12 months, then $49.99 to $119.99, for satellite plans offering up to 25, 50, or 100 Mbps download speeds and 3 or 5 Mbps upload speeds, so the value is limited compared with faster wired service. All three plans are available across 100.0% of Castle Rock, but satellite has higher latency and below-average performance, so check your address for fiber or cable options first, especially for streaming, gaming, video calls, or multiple users.
Available Plans
Gso Satellite
Best plan here: Viasat Essentials — slower than 74% of all internet options in Colorado
- Viasat EssentialsSatellite55 MbpsDownload26Our score$69.99Per month
- Viasat UnleashedSatellite34 MbpsDownload14Our score$99.99Per month
Source: Viasat Inc official site · checked monthly · availability varies by address
SPEED SCORE
Below-average advertised speed for the state
This plan’s advertised maximum download ranks below most options filed with the FCC in this state. It is not a measured speed; faster plans are usually listed here.
The Speed Score is the percentile of this plan’s maximum advertised download speed among every internet option filed with the FCC in this state. It is not a measured speed test: actual throughput varies by address, wiring and time of day. Enter your full address to see which plans are serviceable at your home.
EST. CAPABILITIES
Poor
Poor
Poor
Poor
THE TAKEAWAY
Our recommendation for Castle Rock
Viasat is a limited-performance satellite option compared with alternatives, with a headline Speed Score of 26/100 versus the Castle Rock average of 55. Its Viasat Essentials plan offers up to 55 Mbps download and 4 Mbps upload for $69.99 per month, with availability at 100% of the city. Because satellite service can have higher latency and real-world performance varies by address, check what other technologies are available at your specific location before choosing.
Speeds and reach below are what the provider files with the FCC for each technology tier, by census block. The plans it actually sells here, with their own speeds and prices, are under Pricing & Plans; the two can differ.
About Viasat Inc
Viasat Inc is a backup option rather than a top choice, since its satellite plans offer below-average performance for modern internet needs. Viasat Essentials is the better pick, with up to 55 Mbps download and 4 Mbps upload for $69.99 per month and a Speed Score of 26/100, while Viasat Unleashed costs $99.99 per month for up to 34 Mbps download and 4 Mbps upload. Both plans are available to 100% of Castle Rock, but it is wise to check for faster cable or fiber service at your address first.
Available Plans
Gso Satellite
Cheapest and Fastest Internet Plans in Castle Rock
All 25 product lines from the 9 providers with published pricing here, showing the price you would be quoted today and what it reverts to.
Showing 10 of 25 plans
- StarlinkResidential Max 400 Mbps400 MbpsDownload78Our score$130Per month~100%CoverageSatellite
- Xfinity1.2 Gig$100/mo for 60 months (w/ AutoPay & paperless billing, new customers, 5-Year Price Guarantee)1,200 MbpsDownload88Our score$100Per month~85%CoverageCable
- Xfinity1 Gig1,000 MbpsDownload82Our score$50Per month~85%CoverageCable
- Xfinity500 Mbps$45/mo for 60 months, then $55/mo (w/ AutoPay & paperless billing, new customers)500 MbpsDownload78Our score$45$55Per month~85%CoverageCable
- Xfinity300 Mbps$40/mo for 60 months (w/ AutoPay & paperless billing, new customers, 5-Year Price Guarantee)300 MbpsDownload71Our score$40Per month~85%CoverageCable
- StarlinkResidential 200 Mbps200 MbpsDownload56Our score$85Per month~100%CoverageSatellite
- Verizon5G Home$60/mo for 12 months (w/ Auto Pay & postpaid mobile unlimited plan that includes 5G Ultra Wideband; requires bundle)300 MbpsDownload71Our score$60Per month~65.2%Coverage5G Fixed Wireless
- T-MobileT-Mobile Rely Home Internet 400 Mbps$35/mo for 12 months, then $50/mo (qualifying credit, postpaid voice line, and new Internet line required; requires bundle) · $200 virtual prepaid Mastercard400 MbpsDownload78Our score$35$50Per month~52.4%CoverageFixed Wireless
- T-MobileT-Mobile Amplified Home Internet 500 Mbps$45/mo for 12 months, then $60/mo (new Internet line, qualifying credit, postpaid voice line required; requires bundle) · $200 virtual prepaid Mastercard500 MbpsDownload78Our score$45$60Per month~52.4%CoverageFixed Wireless
- T-MobileT-Mobile All-In Home Internet 500 Mbps$55/mo for 12 months, then $70/mo (new Internet line, qualifying credit, postpaid voice line required; requires bundle) · $200 virtual prepaid Mastercard500 MbpsDownload78Our score$55$70Per month~52.4%CoverageFixed Wireless
Prices are the current promotional rate where one is advertised. Sourced monthly from each provider’s own site; availability varies by address.
Best Fit by Household Type in Castle Rock
Best Fit
Students & Roommates
Choose Xfinity 300 Mbps, reaching about 85% of Castle Rock, for shared streaming and coursework.
Its 300 Mbps plan balances capacity and broad availability across Castle Rock households.
Check first: Confirm the address, because Xfinity’s 2 Gig tier reaches only about 24%.
Best Fit
Remote Workers
Choose Quantum Fiber where available for symmetrical service up to 2,000/1,000 Mbps.
Quantum Fiber’s 2 Gig tier reaches about 16% and offers strong upload capacity for work calls.
Check first: Fiber availability is address-specific; Quantum Fiber’s overall footprint is about 25%.
Best Fit
Rural & Edge-of-City Homes
Start with satellite service available everywhere, then check CenturyLink’s roughly 95% overall footprint.
Starlink, HughesNet, and Viasat are available everywhere, while CenturyLink is the broadest non-satellite backup.
Check first: CenturyLink is mostly DSL, with its common fastest tier reaching about 18%.
Best Fit
Students & Roommates
Start with Quantum Fiber where fiber is available near campus-heavy areas.
Shared apartments need stable upload and download performance for Zoom, streaming, and concurrent device use.
Check first: Confirm your exact building is wired for the advertised plan tier before ordering.
Internet Providers by ZIP Code in Castle Rock
Founders Village 80104
Xfinity is currently the strongest option for Broad cable availability.
Xfinity reaches about 48% in Founders Village, while Quantum Fiber reaches about 18%.
The Meadows 80109
Xfinity is currently the strongest option for Fast cable service.
Xfinity’s 2 Gig tier reaches about 43% in The Meadows, and Quantum Fiber reaches about 25%.
Terrain 80108
Xfinity is currently the strongest option for Broad cable coverage.
Xfinity reaches about 45% in Terrain, while Quantum Fiber reaches about 22%.
Internet providers near Castle Rock
Coverage can change completely a few miles down the road. If you’re moving to or shopping just outside Castle Rock, check the neighboring market directly.
Castle Rock Internet FAQs
Who is the best internet provider in Castle Rock, CO?
Xfinity is the best overall provider, with 2,000 Mbps cable reaching about 24% of Castle Rock. If it reaches your address, Quantum Fiber is the faster choice with 2,000/1,000 Mbps fiber reaching about 16%; otherwise, Xfinity’s 1,200 Mbps tier reaches about 85%.
What is the fastest internet in Castle Rock, CO?
Quantum Fiber is the fastest internet in Castle Rock where it is available: fiber up to 2,000/1,000 Mbps, reaching about 16% of the city. Xfinity reaches far more homes at up to 2,000 Mbps.
Which internet provider covers the most of Castle Rock, CO?
CenturyLink has the largest non-satellite footprint at about 95% of Castle Rock. Its service is mostly DSL, and its common fastest 140 Mbps tier reaches about 18%, while satellite providers are available everywhere.
What is the cheapest internet plan in Castle Rock, CO?
T-Mobile Rely Home Internet 400 Mbps is the cheapest plan at a promotional $35/mo for 400 Mbps, reaching about 52% of Castle Rock. The rate requires a qualifying credit, postpaid voice line, and new Internet line, with a bundle required.
Can I get fiber internet in Castle Rock?
Fiber coverage ranges from about 3% for Thrive Broadband to about 25% for Quantum Fiber in Castle Rock. Quantum Fiber’s 500 Mbps plan reaches about 25%, while its 2,000 Mbps tier reaches about 16%, so availability depends on the exact address.
What internet speed do I need in Castle Rock?
A 100 Mbps plan reaches about 38% through CenturyLink and supports lighter households, while 300 Mbps Xfinity reaches about 85% for shared use. Remote workers, gamers, or streamers should check gigabit options, but each faster tier has its own smaller coverage area.
Which internet providers are available in The Meadows?
The Meadows has Xfinity reaching about 43% with 2,000 Mbps cable and Quantum Fiber reaching about 25% with 2,000/1,000 Mbps fiber. Check the address before choosing, because these ZIP-level figures describe coverage areas rather than guaranteed service at every home.
How We Analyze Internet in Castle Rock
FCC Broadband Data
We use the FCC National Broadband Map, updated twice a year with provider-reported coverage at the census block level.
Speed Score
A state-wide percentile of each plan’s maximum advertised download speed against every option filed with the FCC in the state, all technologies on one scale. It is not a measured speed test.
Coverage Calculation
Provider coverage shows what percentage of census blocks in Castle Rock report service availability from each provider.
Data Coverage for Castle Rock
How We Calculate Speed Score
The Speed Score is a state-wide percentile from 0 to 100. It answers one question: of every internet option filed with the FCC in this state, across every technology, what share is slower than this plan’s maximum advertised download speed?
What goes in:
- The plan’s maximum advertised download speed, as the provider files it with the FCC and lists it for sale.
- Every other serviceable option in the state from the FCC Broadband Data Collection, counted by the census blocks it reaches.
Speed Score = share of the state’s filed options with a lower advertised download speed
A score of 85 means this plan’s advertised speed beats 85% of the options filed in the state. Fiber, cable, DSL, fixed wireless and satellite are all on the same scale, so a 1,000 Mbps plan scores the same whoever sells it.
What it is not: a measured speed test. It does not include latency, upload speed, reliability or congestion. Real throughput at an address varies with wiring, equipment and time of day.
How providers are ordered on this page: each provider’s tier scores are averaged across the census blocks it serves, then multiplied by the share of the city it reaches. Wired providers rank ahead of wireless-only ones, and satellite last, because their filings describe a signal footprint rather than a plant. The same rule sets the title and the 30-second verdict.
Data source: FCC National Broadband Map (Broadband Data Collection), republished roughly twice a year; provider plan lists checked monthly.
How We Calculate Capabilities
Estimated Capabilities predict how well each internet plan supports common household activities based on speed requirements and connection type.
Rating Scale:
- Excellent – Optimal performance, handles peak usage easily
- Good – Reliable performance with minimal issues
- Fair – Functional but may experience slowdowns during heavy use
- Poor – Not recommended; expect frequent buffering or lag
How We Rate Each Category:
Streaming
Based on download speed. 4K streaming requires 25+ Mbps per stream; HD requires 5+ Mbps. We account for multiple simultaneous streams.
Multi-device
Evaluates total bandwidth capacity divided by typical household device count (phones, tablets, smart TVs, computers). Fiber and cable handle many devices better than DSL or satellite.
Gaming
Considers both upload speed (for sending game data) and latency (ping time). Fiber and cable excel here; satellite connections struggle due to inherent signal delay.
Whole Home
Assesses whether the connection can reliably serve an entire household during peak evening hours. Factors in technology type (shared vs. dedicated bandwidth) and total speed capacity.
Note: Actual performance depends on your specific location, network congestion, and equipment quality.