South San Francisco, CA Internet
Internet Providers in South San Francisco, CA
Compare every internet provider in South San Francisco, CA: coverage from FCC filings, plan prices checked monthly, and an address check for your street.
The 30-Second Verdict
UpdatedXfinity is the best overall, with cable speeds up to 2,000 Mbps reaching about 53% of the city. If AT&T reaches your address, it is the faster choice, with fiber speeds up to 5,000/5,000 Mbps reaching about 68% of the city. Where Xfinity does not reach, Astound Broadband is the safe fallback, mostly cable with speeds up to 1,500 Mbps reaching about 68% of the city.
The ZIP breakdown shows AT&T dominating 94083, reaching about 81% of addresses with fiber speeds up to 5,000/5,000 Mbps, while Xfinity covers the rest with cable speeds up to 2,000 Mbps. Westborough is more mixed, with AT&T fiber reaching about 70%, Xfinity reaching about 16%, and Astound Broadband adding a smaller cable footprint. Sunshine Gardens, Winston Manor, and Serra Highlands can differ from those ZIP-wide patterns, so do not assume a neighborhood label guarantees a specific network. Fixed wireless from Verizon, T-Mobile, or Unwired Ltd can be worth checking when wired service misses your address, though speeds vary by location. Coverage changes street to street, so confirm the exact address before choosing.
Best Internet Providers in South San Francisco, CA
Best plan here: 2 Gig — faster than 91% of all internet options in California
- 2 Gig$100/mo for 60 months (w/ AutoPay & paperless billing, new customers, 5-Year Price Guarantee)Cable2,000 MbpsDownload91Our score$100Per month
- 1.2 Gig$100/mo for 60 months (w/ AutoPay & paperless billing, new customers, 5-Year Price Guarantee)Cable1,200 MbpsDownload89Our score$100Per month
- 1 GigCable1,000 MbpsDownload81Our score$50Per month
- 500 Mbps$45/mo for 60 months, then $55/mo (w/ AutoPay & paperless billing, new customers)Cable500 MbpsDownload80Our score$45Per month
- 300 Mbps$40/mo for 60 months (w/ AutoPay & paperless billing, new customers, 5-Year Price Guarantee)Cable300 MbpsDownload72Our 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 South San Francisco
Xfinity’s 2 Gig cable plan reaches about 53% of South San Francisco, so your address will determine whether you can get it. Where available, it is a solid option with up to 2000 Mbps download, 35 Mbps upload, and a 91/100 Speed Score, well above the city’s 62 average. Xfinity’s cable availability and performance can vary by address, so confirm the plan and technology offered 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 Xfinity
Xfinity reaches 93.5% of South San Francisco, giving many shoppers a strong chance of getting service. Its cable lineup offers excellent options, including up to 2,000 Mbps download speeds and 35 Mbps upload for $100 per month, plus lower-cost plans from $40 per month, though the fastest 2 Gig plan reaches only about 53% of the city, so check your address for the best available option.
Available Plans
Cable
Cable
Fiber
Fiber
Best plan here: Gig WiFi — faster than 81% of all internet options in California
- Gig WiFi$200 Gift CardFiber1,000 MbpsDownload81Our score$40Per month
Source: Astound Broadband 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 South San Francisco
Astound Broadband is a top-tier option in South San Francisco, with its Gig WiFi fiber plan earning a Speed Score of 81/100, above the city average of 62. It offers up to 1,000 Mbps download and 1,500 Mbps upload for $40 per month, plus a $200 reward card, but this plan is available to only about 3% of the city. Confirm fiber availability at your address, since Astound Broadband’s best performance may not reach every 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 Astound Broadband
Astound Broadband is an excellent option for demanding internet use, but its best choice is available at only a small number of South San Francisco addresses. Its Gig WiFi fiber plan offers up to 1000 Mbps download and 1500 Mbps upload for $40 per month, plus a $200 reward card, with an excellent 81/100 Speed Score and availability at about 3% of the city, so check your address before counting on it.
Available Plans
Cable
Copper
Fiber
Fiber
Best plan here: AT&T Internet 5 GIG speed — faster than 95% of all internet options in California
- AT&T Internet 5 GIG speed$90/mo for 12 months (new AT&T Fiber customers; up to $30 discount applies for 12 months on 1Gb+ plans) · $150 Visa reward cardFiber5,000 MbpsDownload95Our score$90Per month
- AT&T Fiber 1 GIG speed$50/mo for 12 months (new AT&T Fiber customers; up to $30 off for 12 months; full plan cost due until discount starts within 3 bills) · $150 Visa reward cardFiber1,000 MbpsDownload81Our score$50Per month
- AT&T Fiber 500Mbps$50/mo for 12 months (new AT&T Fiber customers, $15/mo discount for 12 months applies after up to 3 bill cycles) · $100 Visa reward cardFiber500 MbpsDownload80Our score$50Per month
- AT&T Fiber 300Mbps$35/mo for 12 months (new customers, with AutoPay & paperless bill discount, wired connection to gateway) · $200 AT&T Visa Reward CardFiber300 MbpsDownload72Our score$35Per month
- 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 MbpsDownload72Our score$40Per month
Source: AT&T 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 South San Francisco
At $90/mo for 12 months, AT&T Internet 5 GIG offers up to 5000 Mbps both ways on fiber, plus a $150 reward card. With a 95/100 Speed Score compared with the city average of 62, it is a top-tier option and an excellent choice for demanding households. This plan reaches about 68% of South San Francisco, so verify your address, since AT&T’s best fiber performance may not be available everywhere.
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
Starting at $35/mo, AT&T offers excellent value in South San Francisco, with fiber plans ranging from up to 300 Mbps for basic to moderate use to up to 5,000 Mbps both ways for demanding households, plus promotional reward cards. Fiber availability is address-dependent, reaching about 75% of the city for the 300 Mbps, 500 Mbps, and 1 GIG plans and about 68% for 5 GIG, while Internet Air offers up to 300 Mbps download and 30 Mbps upload at $40/mo across about 54% of the city, so check your address for fiber first because the fixed wireless fallback may be less consistent.
Available Plans
Fiber
Licensed Fixed Wireless
Copper
Licensed Fixed Wireless
Copper
Fiber
Copper
Copper
Copper
Sonic.net
Speeds up to 1,000 Mbps
Plans start at $40 /mo *
Speed Score: Faster than 81% of all internet options in California
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 South San Francisco
The monthly price buys Sonic.net’s fiber plan with up to 1000 Mbps download and 1000 Mbps upload, making it an excellent choice for fast, low-latency home internet. With a Speed Score of 81/100 and coverage reaching 32.1% of South San Francisco, it is a top-tier option, though availability depends 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 Sonic.net
At the monthly price shown, Sonic.net offers excellent value with fiber speeds up to 1000 Mbps both ways, making it a strong choice for streaming, gaming, remote work, and multiple users. This plan reaches about 32% of South San Francisco, so check your exact address to confirm availability before choosing it.
Available Plans
Fiber
Best plan here: 5G Home — faster than 72% of all internet options in California
- 5G Home$60/mo for 12 months (w/ Auto Pay & postpaid mobile unlimited plan that includes 5G Ultra Wideband; requires bundle)5G Fixed Wireless300 MbpsDownload72Our 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 South San Francisco
Verizon’s 5G fixed wireless connection can support everyday streaming, video calls, and browsing with up to 300 Mbps download and 75 Mbps upload, earning a 72/100 Speed Score that is above South San Francisco’s city average of 62. Availability is address-dependent, and this plan reaches about 49% of the city, so check your address before counting on its performance.
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 Home fixed wireless service offers up to 300 Mbps download and 75 Mbps upload, which is good for streaming, video calls, and everyday household use, though performance can vary with wireless conditions. It is available to about 49% of South San Francisco, so check your address first, and confirm the required bundle with Auto Pay and a qualifying postpaid unlimited mobile plan fits your budget.
Available Plans
Licensed Fixed Wireless
Licensed Fixed Wireless
Unwired Ltd
Speeds up to 200 Mbps
Plans range $55–$175 /mo *
Best plan here: Residential 200 Mbps — faster than 59% of all internet options in California
- Residential 200 MbpsFixed Wireless200 MbpsDownload59Our score$175Per month
- Residential 150 MbpsFixed Wireless150 MbpsDownload58Our score$135Per month
- Residential 100 MbpsFixed Wireless100 MbpsDownload21Our score$85Per month
- Residential 50 MbpsFixed Wireless50 MbpsDownload13Our score$55Per month
Source: Unwired Ltd 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
Good
Adequate
Adequate
Good
THE TAKEAWAY
Our recommendation for South San Francisco
Unwired Ltd’s headline Speed Score of 59/100 reflects an up to 200 Mbps download and 25 Mbps upload connection, suitable for everyday browsing, streaming, and many home users, though it is below the South San Francisco average of 62. Fixed wireless is adequate but can experience performance issues compared with fiber or cable, so consider checking other providers first for demanding or latency-sensitive use. This plan is available to about 25% of the city, making address eligibility important.
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 Unwired Ltd
Unwired Ltd’s fastest plan offers up to 200 Mbps download and 25 Mbps upload, which should handle streaming, video calls, and several connected devices, though its fixed wireless technology can be less consistent than cable or fiber. The plan has a Speed Score of 59/100 and is available to 25.0% of South San Francisco, so check your address and compare faster fiber or cable options before choosing one of its lower-speed plans.
Available Plans
Licensed Fixed Wireless
Best plan here: T-Mobile Amplified Home Internet 500 Mbps — faster than 80% of all internet options in California
- 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 MbpsDownload80Our 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 MbpsDownload80Our 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 MbpsDownload80Our score$35Per month
Source: T-Mobile 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
Good
Adequate
Adequate
Good
THE TAKEAWAY
Our recommendation for South San Francisco
Households seeking affordable internet for streaming, work, and everyday use may find T-Mobile a competitive option, with the Rely Home Internet plan offering up to 400 Mbps download and 50 Mbps upload for $35 per month. Its fixed wireless service has a Speed Score of 80/100, above the South San Francisco average of 62, though fixed wireless can be less consistent than wired connections. The Rely plan is available to about 64% of the city, so check your address because T-Mobile’s higher-performing service may not reach every home.
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 from fixed wireless, with plans offering up to 500 Mbps download and a Speed Score of 80/100. The best plans are available to about 64% of South San Francisco, so availability is address-dependent, and you should confirm service at your home since fixed wireless can be less consistent than cable or fiber.
Available Plans
Licensed Fixed Wireless
Licensed Fixed Wireless
Best plan here: Residential Max 400 Mbps — faster than 80% of all internet options in California
- Residential Max 400 MbpsSatellite400 MbpsDownload80Our score$130Per month
- Residential 200 MbpsSatellite200 MbpsDownload59Our score$85Per month
- Residential 100 MbpsSatellite100 MbpsDownload21Our score$55Per month
Source: Starlink 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
Adequate
Poor
Poor
Adequate
THE TAKEAWAY
Our recommendation for South San Francisco
Satellite service can support everyday browsing and streaming, but higher latency may make gaming, video calls, and other real-time activities feel less responsive. Starlink’s Residential Max plan offers up to 400 Mbps download and 40 Mbps upload with an 80/100 Speed Score, above South San Francisco’s 62 average, and is available to 100.0% of the city; because every listed plan uses satellite, check which technologies reach your specific address if low latency is important.
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, giving South San Francisco households broad availability and up to 400 Mbps download speeds, though satellite latency can make video calls, gaming, and other real-time activities less responsive than fiber or cable. Its Residential Max 400 Mbps plan has a Speed Score of 80/100 and is available to 100.0% of the city, while 200 Mbps and 100 Mbps plans cost less, so check whether a faster terrestrial option is available at your address before choosing Starlink as a practical fallback.
Available Plans
Ngso Satellite
Best plan here: Fusion — slower than 79% of all internet options in California
- Fusion$94.99/mo for the first 12 months, then $119.99/moSatellite100 MbpsDownload21Our score$94.99Per month
- Select$49.99/mo for the first 12 months, then $74.99/moSatellite50 MbpsDownload13Our score$49.99Per month
- Lite$39.99/mo for the first 12 months, then $49.99/moSatellite25 MbpsDownload3Our 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 South San Francisco
At $94.99/mo for the first 12 months, then $119.99/mo, HughesNet’s Fusion plan buys up to 100 Mbps download and 5 Mbps upload, but its 21/100 Speed Score is below South San Francisco’s city average of 62. Satellite service reaches 100.0% of the city, but its limited performance and higher latency 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
At $39.99 to $94.99 per month for the first 12 months, HughesNet offers up to 25 to 100 Mbps download speeds, but its satellite service delivers below-average value for demanding modern use. The 100 Mbps Fusion plan is the strongest choice, while Select and Lite are better suited to basic browsing and light streaming, so check for faster fiber or cable service at your address first even though HughesNet’s plans are available across 100.0% of South San Francisco.
Available Plans
Gso Satellite
Best plan here: Viasat Essentials — slower than 82% of all internet options in California
- Viasat EssentialsSatellite55 MbpsDownload18Our score$69.99Per month
- Viasat UnleashedSatellite34 MbpsDownload13Our 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 South San Francisco
Viasat is a limited-performance choice compared with the alternatives available in South San Francisco, with a headline Speed Score of 18/100 versus the city average of 62. Its Viasat Essentials plan offers up to 55 Mbps download and 4 Mbps upload for $69.99 per month and is available to 100% of the city, but satellite service typically has higher latency, so check what other technologies reach your specific address before choosing it.
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 for most modern internet needs, since its satellite plans offer below-average speeds and higher latency. Viasat Essentials is the better value, with up to 55 Mbps download and 4 Mbps upload for $69.99 per month, while Viasat Unleashed provides up to 34 Mbps download and 4 Mbps upload for $99.99 per month; both are available to 100% of South San Francisco, but you should check for faster fiber or cable service at your address first.
Available Plans
Gso Satellite
Cheapest and Fastest Internet Plans in South San Francisco
All 27 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 27 plans
- Xfinity1.2 Gig$100/mo for 60 months (w/ AutoPay & paperless billing, new customers, 5-Year Price Guarantee)1,200 MbpsDownload89Our score$100Per month~93.2%CoverageCable
- StarlinkResidential Max 400 Mbps400 MbpsDownload80Our score$130Per month~100%CoverageSatellite
- Xfinity1 Gig1,000 MbpsDownload81Our score$50Per month~93.2%CoverageCable
- Xfinity500 Mbps$45/mo for 60 months, then $55/mo (w/ AutoPay & paperless billing, new customers)500 MbpsDownload80Our score$45$55Per month~93.2%CoverageCable
- Xfinity300 Mbps$40/mo for 60 months (w/ AutoPay & paperless billing, new customers, 5-Year Price Guarantee)300 MbpsDownload72Our score$40Per month~93.2%CoverageCable
- AT&TAT&T Internet 5 GIG speed$90/mo for 12 months (new AT&T Fiber customers; up to $30 discount applies for 12 months on 1Gb+ plans) · $150 Visa reward card5,000 MbpsDownload95Our score$90Per month~68%CoverageFiber
- AT&TAT&T Fiber 1 GIG speed$50/mo for 12 months (new AT&T Fiber customers; up to $30 off for 12 months; full plan cost due until discount starts within 3 bills) · $150 Visa reward card1,000 MbpsDownload81Our score$50Per month~75.3%CoverageFiber
- AT&TAT&T Fiber 500Mbps$50/mo for 12 months (new AT&T Fiber customers, $15/mo discount for 12 months applies after up to 3 bill cycles) · $100 Visa reward card500 MbpsDownload80Our score$50Per month~75.3%CoverageFiber
- StarlinkResidential 200 Mbps200 MbpsDownload59Our score$85Per month~100%CoverageSatellite
- AT&TAT&T Fiber 300Mbps$35/mo for 12 months (new customers, with AutoPay & paperless bill discount, wired connection to gateway) · $200 AT&T Visa Reward Card300 MbpsDownload72Our score$35Per month~75.3%CoverageFiber
Prices are the current promotional rate where one is advertised. Sourced monthly from each provider’s own site; availability varies by address.
Compare South San Francisco providers head-to-head
See how South San Francisco’s providers stack up against each other — speed, coverage, price, and who wins block by block.
Best Fit by Household Type in South San Francisco
Best Fit
Students & Roommates
Choose Xfinity 300 Mbps for $40/mo for 12 months, reaching about 93% of South San Francisco.
Its cable plan combines broad availability with enough capacity for shared streaming, browsing, and video calls.
Check first: Confirm the promotional term and exact address before ordering.
Best Fit
Remote Workers
Choose AT&T Fiber 1 GIG for $50/mo, reaching about 75% of South San Francisco.
Fiber offers 1,000 Mbps symmetrical service where available, supporting uploads, meetings, and cloud work.
Check first: Fiber availability varies by address, including within Westborough and ZIP 94083.
Best Fit
Gamers & Streamers
Choose Xfinity 2 Gig for $100/mo, reaching about 53% of the city.
Its 2,000 Mbps cable tier is the best overall option where that tier reaches the address.
Check first: The 2 Gig tier is far less available than Xfinity's overall footprint.
Best Fit
Rural & Edge-of-City Homes
Choose Starlink Residential 100 Mbps for $55/mo, available everywhere in South San Francisco.
Satellite availability reaches every address when wired providers do not serve a home.
Check first: Satellite speeds are lower than the fastest wired options.
Internet Providers by ZIP Code in South San Francisco
Westborough 94080
AT&T is currently the strongest option for Fiber-speed service.
AT&T reaches about 70% of ZIP 94080 with fiber up to 5,000/5,000 Mbps.
ZIP 94083
AT&T is currently the strongest option for Broad fiber availability.
AT&T reaches about 81% of ZIP 94083 with fiber up to 5,000/5,000 Mbps.
Westborough 94080
AT&T is currently the strongest option for multi-user homes, remote work, gaming, and 4K streaming.
AT&T leads this ZIP with 69.9% best-address share.
ZIP 94083
AT&T is currently the strongest option for multi-user homes, remote work, gaming, and 4K streaming.
AT&T leads this ZIP with 80.8% best-address share.
Internet providers near South San Francisco
Coverage can change completely a few miles down the road. If you’re moving to or shopping just outside South San Francisco, check the neighboring market directly.
South San Francisco Internet FAQs
Who is the best internet provider in South San Francisco, CA?
Xfinity is the best overall, with cable up to 2,000 Mbps reaching about 53% of the city and an overall footprint of about 94%. If AT&T fiber reaches your address, it is the faster choice, offering up to 5,000/5,000 Mbps across about 68%.
What is the fastest internet in South San Francisco, CA?
AT&T fiber is fastest where available, reaching about 68% of the city at up to 5,000/5,000 Mbps. Xfinity remains the best overall provider, with 2,000 Mbps cable reaching about 53%, so availability determines the practical choice.
Which internet provider covers the most of South San Francisco, CA?
AT&T has the largest non-satellite footprint at about 97% of South San Francisco. Satellite providers are available everywhere, while AT&T's fastest 5,000/5,000 Mbps fiber tier reaches about 68%, not its entire footprint.
What is the cheapest internet plan in South San Francisco, CA?
AT&T Fiber 300Mbps is $35/mo for 300 Mbps for the first 12 months with AutoPay and paperless billing, reaching about 75% of the city; T-Mobile Rely Home Internet also costs $35/mo for 400 Mbps for 12 months with a qualifying wireless line, reaching about 64%. Choose based on address and bundle eligibility.
Can I get fiber internet in South San Francisco?
AT&T fiber reaches about 75% of South San Francisco, while Sonic.net fiber reaches about 32%. Check the exact address because fiber tiers cover less than some providers' overall footprints, including AT&T's roughly 97% total coverage.
What internet speed do I need in South San Francisco?
A 300 Mbps plan is a practical baseline for many South San Francisco households, while 1,000 Mbps suits heavier streaming, gaming, and remote-work use. Xfinity's 300 Mbps tier reaches about 93%, and AT&T's 1,000/1,000 Mbps fiber reaches about 75%.
What internet options are available in Westborough?
ZIP 94080 has AT&T fiber reaching about 70%, Xfinity cable reaching about 16% at 2,000 Mbps, and Astound cable reaching about 3% at 1,500 Mbps. Check the street address because these ZIP-level shares do not guarantee service at every home.
How We Analyze Internet in South San Francisco
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 South San Francisco report service availability from each provider.
Data Coverage for South San Francisco
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.