Oregon / Portland / Quantum Fiber vs Xfinity

Quantum Fiber vs Xfinity in Portland

Portland shoppers are choosing between Quantum Fiber’s stronger uploads and Xfinity’s lower starting price and wider availability.

The 30-Second VerdictUpdated September 21, 2026

Xfinity is the better overall pick because it reaches more Portland homes and starts at a lower price, while still matching Quantum Fiber’s speed score. Quantum Fiber wins on upload speed, Xfinity wins on coverage and price, and both have a speed score of 90/100. Quantum Fiber is right for households that upload heavily, work from home, or can get fiber at their address. Xfinity suits budget-minded shoppers who want broader availability and strong download performance.

By Austin Shrum and Ali Yazdi, co-founders. Both spent years selling internet plans online before building this site. Every figure above comes from FCC Broadband Data Collection filings and monthly price checks; here is how we rank providers.

At a glance

Quantum Fiber vs. Xfinity, side by side.

Provider	Type	Top speed	City coverage	Starting price	Best for
Quantum Fiber	Fiber	2 Gig 1 Gig upload	70%	$50/mo	Top fiber speeds
Xfinity	Cable	2 Gig 300 Mbps upload	98%	$40/mo	Widest availability

Coverage map

Two different questions, two views. Top speed shows who offers the faster plan where you can actually get it. Coverage shows who reaches more of each ZIP. Or pick a single provider to see just its footprint.

View

Showing the provider with the faster available plan in each ZIP. Click any ZIP for the breakdown.

Neighborhood breakdown

The choice can shift by ZIP code and neighborhood because availability varies block to block. Xfinity reaches about 98% of Portland overall, while Quantum Fiber reaches about 70% overall and its 2,000/1,000 Mbps tier reaches about 58%, so check your exact address.

ZIP	Neighborhoods	Coverage		Top speed		Rank score		Winner
ZIP	Neighborhoods	Quantum Fiber	Xfinity	Quantum Fiber	Xfinity	Quantum Fiber	Xfinity	Winner
97202	Sellwood, Westmoreland, Eastmoreland, Brooklyn	41%	100%	8 Gig	2 Gig	37	79	Xfinity
97206	Foster-Powell, Mt. Scott-Arleta, Lents, Woodstock	93%	100%	8 Gig	2 Gig	84	79	Quantum Fiber
97211	Piedmont, Woodlawn, Concordia, Alberta	93%	100%	8 Gig	2 Gig	84	79	Quantum Fiber
97212	Irvington, Alameda, Grant Park, Sabin	85%	100%	8 Gig	2 Gig	76	79	Xfinity
97217	Kenton, Overlook, Arbor Lodge, University Park	88%	100%	8 Gig	2 Gig	79	79	Xfinity
97219	Multnomah Village, Hillsdale, West Portland Park, Marshall Park	82%	100%	2 Gig	2 Gig	74	79	Xfinity
97229	Bethany, Cedar Mill, Bonny Slope, Oak Hills	5%	99%	2 Gig	2 Gig	4	79	Xfinity
97214	Buckman, Hawthorne, Sunnyside, Ladd’s Addition	14%	99%	8 Gig	2 Gig	13	79	Xfinity
97220	Parkrose, Argay, Wilkes	91%	100%	8 Gig	2 Gig	82	79	Quantum Fiber
97213	Hollywood, Roseway, Rose City Park, Beaumont-Wilshire	78%	100%	8 Gig	2 Gig	70	79	Xfinity
97222	Milwaukie, Oak Grove, Oatfield	75%	100%	8 Gig	2 Gig	68	79	Xfinity
97266	Lents, Pleasant Valley, Powellhurst-Gilbert, Mill Park	89%	100%	2 Gig	2 Gig	80	79	Quantum Fiber
97203	St. Johns, University Park, Portsmouth, Cathedral Park	90%	99%	2 Gig	2 Gig	81	79	Quantum Fiber
97230	Wilkes, Argay, Russell, Glenfair	52%	100%	8 Gig	2 Gig	47	79	Xfinity
97223	Tigard, Metzger, Greenburg	36%	100%	2 Gig	2 Gig	32	79	Xfinity
97232	Lloyd District, Kerns, Sullivan’s Gulch	32%	99%	8 Gig	2 Gig	29	79	Xfinity
97231	Linnton, Sauvie Island, Northwest Hills	17%	56%	2 Gig	2 Gig	15	44	Xfinity
97236	Powellhurst-Gilbert, Pleasant Valley, Centennial	62%	100%	8 Gig	2 Gig	56	79	Xfinity
97224	Tigard, Bull Mountain, King City	0%	100%	—	2 Gig	—	79	Xfinity
97225	Cedar Hills, Cedar Mill, West Slope, Raleigh Hills	47%	100%	2 Gig	2 Gig	43	79	Xfinity
97233	Hazelwood, Centennial, Mill Park, Rockwood	73%	100%	8 Gig	2 Gig	66	79	Xfinity
97216	Mill Park, Hazelwood, Powellhurst-Gilbert	90%	100%	8 Gig	2 Gig	81	79	Quantum Fiber
97215	Mt. Tabor, South Tabor, Montavilla	53%	100%	2 Gig	2 Gig	48	79	Xfinity
97267	Oak Grove, Milwaukie, Jennings Lodge, Oatfield	75%	100%	8 Gig	2 Gig	68	79	Xfinity
97218	Cully, Portland International Airport, Sumner	92%	99%	8 Gig	2 Gig	83	79	Quantum Fiber
97210	Northwest District, Nob Hill, Willamette Heights, Forest Park	69%	98%	8 Gig	2 Gig	62	78	Xfinity
97209	Pearl District, Northwest District, Old Town	29%	98%	8 Gig	2 Gig	26	78	Xfinity
97201	Downtown Portland, Goose Hollow, South Portland, Marquam Hill	46%	98%	8 Gig	2 Gig	42	78	Xfinity
97239	Hillsdale, South Portland, Homestead, Marquam Hill	75%	98%	8 Gig	2 Gig	68	78	Xfinity
97221	Sylvan-Highlands, Raleigh Hills, Arlington Heights, West Hills	76%	99%	2 Gig	2 Gig	69	79	Xfinity
97227	Eliot, Boise, Overlook, Albina	70%	99%	8 Gig	2 Gig	63	79	Xfinity
97205	Downtown Portland, Goose Hollow, West Hills, Nob Hill	26%	96%	2 Gig	2 Gig	23	76	Xfinity
97242	Portland	19%	100%	8 Gig	2 Gig	17	79	Xfinity
97293	Southeast Portland, Buckman	6%	97%	8 Gig	2 Gig	5	77	Xfinity
97204	Downtown Portland, Financial District, Waterfront	4%	93%	2 Gig	2 Gig	4	74	Xfinity
97207	Downtown Portland, Portland State University	4%	93%	2 Gig	2 Gig	4	74	Xfinity
97250	Portland	15%	82%	2 Gig	2 Gig	13	65	Xfinity
97238	Portland	15%	82%	2 Gig	2 Gig	13	65	Xfinity
97282	Sellwood, Southeast Portland	3%	99%	1 Gig	2 Gig	3	79	Xfinity
97283	North Portland, St. Johns	84%	99%	2 Gig	2 Gig	75	79	Xfinity
97286	Southeast Portland	98%	100%	2 Gig	2 Gig	88	79	Quantum Fiber
97240	Downtown Portland	4%	93%	2 Gig	2 Gig	4	74	Xfinity
97280	Southwest Portland, Tigard area	87%	100%	2 Gig	2 Gig	78	79	Xfinity
97269	Clackamas, Milwaukie	37%	100%	8 Gig	2 Gig	34	79	Xfinity
97298	Northwest Portland	78%	100%	2 Gig	2 Gig	70	79	Xfinity
97292	East Portland, Gateway area	84%	100%	8 Gig	2 Gig	76	79	Xfinity

Rank score (0–100) is each provider’s Speed Score, discounted for weak upload, times the share of that ZIP it reaches — the same rule that orders providers on the Portland city page, so it moves as availability changes street to street.

Which is better for…

The right pick comes down to what you actually do online.

Gaming

Quantum Fiber

Quantum Fiber’s 2,000/1,000 Mbps tier reaches about 58% of Portland, giving gamers much more upload capacity where available. Xfinity’s 2,000/300 Mbps tier reaches about 50%.

Streaming

Xfinity

Xfinity reaches about 98% of Portland, so it is more likely to be available for households that mainly stream and download. Its 2,000/300 Mbps tier reaches about 50% of the city where available.

Video calls

Quantum Fiber

Upload speed decides this one: Quantum Fiber’s 2,000/1,000 Mbps tier reaches about 58%, while Xfinity’s 2,000/300 Mbps tier reaches about 50%. That gives Quantum Fiber more headroom for multiple calls and uploads where available.

Just the basics

Xfinity

Xfinity starts at $40/mo and reaches about 98% of Portland, making it the cheaper, simpler choice for everyday browsing, email, and streaming. Check availability and the current terms at your address.

Get connected

Pick your provider and check availability at your address.

Check plans

Top speed2 Gig

Upload1 Gig

Coverage70%

From$50/mo

2 Gig down · 1 Gig up Fiber
1 Gig down · 1 Gig up Fiber

Check plans

Top speed2 Gig

Upload300 Mbps

Coverage98%

From$40/mo

2 Gig down · 300 Mbps up Cable
1 Gig down · 35 Mbps up Cable

See what’s actually available at your address

Coverage changes from one street to the next. Check your exact address in seconds.

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Frequently asked questions

Is Quantum Fiber or Xfinity available at my Portland address?

Xfinity reaches about 98% of Portland overall, while Quantum Fiber reaches about 70%. Availability can vary block to block, so check both providers with your exact address before choosing.

Which is cheaper, Quantum Fiber or Xfinity, and what will I actually pay?

Xfinity has a $40/mo promotional starting price, compared with Quantum Fiber’s $50/mo promotional starting price. Confirm the post-promo rate, equipment fees, and any contract before signing, then compare the full terms for your address.

Which is faster for gaming, working from home, or 4K streaming?

Quantum Fiber’s 2,000/1,000 Mbps tier reaches about 58% of Portland, while Xfinity’s 2,000/300 Mbps tier reaches about 50%. Quantum Fiber has the stronger upload performance for gaming and video calls where available; check which tier your address can get.

How we compare. Coverage is the share of a ZIP where a provider offers a genuinely good plan (≥ 1 Gbps download, ≥ 20 Mbps upload, non-satellite), from FCC Broadband Map serviceability data. “Fastest available” ranks the providers present in a ZIP by top advertised download speed. Pricing reflects current promotional starting rates. Provider order and each ZIP’s winner follow the site’s one ranking rule (Speed Score, discounted for weak upload, times coverage); read the full methodology.