- 92.4% Coverage
- Up to 5,000 Mbps
- Plans from $49.99
Internet providers San Francisco , San Francisco is one of the best-connected cities in the United States, with a fiercely competitive broadband market that gives residents real options across cable, fiber, and fixed wireless. Xfinity (Comcast) remains the dominant cable provider with near-universal coverage across all 47 square miles, while AT&T Fiber has aggressively expanded its fiber footprint and now covers a large swath of the city. Sonic, a Bay Area-born ISP, offers true symmetric gigabit fiber in many neighborhoods and has become a favorite among residents who prioritize upload speeds and customer service. Astound Broadband (formerly RCN) serves select residential areas with competitive cable and fiber-hybrid plans, and T-Mobile Home Internet provides a viable no-contract 5G option for those who can’t get fiber.
Internet Providers San Francisco
Authorized Dealer
Cable + Fiber
Upto 1 GIG
from
/month
- Free Modem & WiFi
- No Contracts
Authorized Dealer
Fiber
Upto 5 GIG
from
/month
- Symmetrical Speeds
- Fiber Coverage Expert
- Fastest Internet Plans In San Francisco
|
Provider
|
Max Speed
|
Type
|
|---|---|---|
|
AT&T Fiber |
5Gbps |
Fiber, IPBB, 5G Internet |
|
Xfinity |
2Gbps |
Cable |
|
Verizon |
300 Mbps |
5G Internet |
- Cheapest Internet Plans InSan Francisco
|
Provider
|
Starts At
|
Speed
|
|
|---|---|---|---|
|
AT&T Fiber |
$30 |
300 Mbps |
|
|
Xfinity |
$35 |
100Mbps |
|
|
Verizon |
$30 |
25 Mbps |
Fiber Internet Providers San Francisco
San Francisco has strong fiber coverage compared to most U.S. cities, with AT&T Fiber and Sonic both offering true fiber-to-the-home (FTTH) service across many neighborhoods. AT&T Fiber is available in much of the city and has been the fastest-growing fiber option in recent years, with symmetric speeds starting at 300 Mbps and going up to 5 Gbps. Sonic, headquartered in the Bay Area, provides competitive symmetric gigabit service and is particularly well-regarded for its transparent pricing and no-data-cap policy.
Neighborhoods with strong fiber availability include the Castro, Noe Valley, Mission District, SoMa, Pacific Heights, Marina, and the Inner Richmond and Inner Sunset. Build-out in the Outer Sunset, Excelsior, Ingleside, and Visitacion Valley has accelerated, though some pockets in these areas remain cable-only. Bayview-Hunters Point and parts of the southern neighborhoods have seen growing investment tied to digital equity initiatives. If fiber isn’t yet live at your specific address, AT&T’s rollout tracker and Sonic’s waitlist are good resources to monitor
92.4%
Fiber Coverage
1.2 Gbps
Avg Local Speed
Frequently Asked Questions
AT&T Fiber currently offers the fastest advertised speeds in San Francisco, with plans up to 5 Gbps (5,000 Mbps) symmetric download and upload. Sonic is a close second with symmetric fiber plans up to 2 Gbps. For residents who need top-tier multi-gigabit speeds, both providers are strong options where available.
Internet in San Francisco ranges from around $20/month for a promotional cable plan (Xfinity’s entry-level tiers) to $180/month or more for a multi-gigabit fiber plan. Most households find reliable broadband in the $35–$80/month range. T-Mobile Home Internet offers a competitive no-contract 5G option at $35/month, while Sonic’s entry-level fiber plan starts at $40/month with no data caps.
Yes. Fiber internet is available across a large portion of San Francisco from AT&T Fiber and Sonic. Coverage is strongest in central and northern neighborhoods, with ongoing expansion into the Outer Sunset, Excelsior, and southern districts. Use the address checker at the top of this page to confirm fiber availability at your specific address.
Fiber is widely available in SoMa, Mission District, Castro, Noe Valley, Pacific Heights, Marina, Haight-Ashbury, Inner Richmond, Inner Sunset, and most of the northeastern neighborhoods. Expansion is ongoing in the Outer Richmond, Outer Sunset, Excelsior, Ingleside, and Bayview-Hunters Point. AT&T and Sonic both publish coverage maps that can be checked by address.
Xfinity offers the lowest advertised promotional rate at $19.99/month for its entry-level cable plan, though regular rates apply after the promotional period ends. T-Mobile Home Internet and AT&T Fiber both offer plans starting at $35/month with no annual contract. Sonic starts at $40/month for fiber with no data caps and straightforward pricing. Eligible low-income households should also check Xfinity’s Internet Essentials program ($9.95/month) and AT&T’s Access plan ($30/month) for subsidized broadband.
Local Internet Statistics
1.2 Gbps
Average Speed
68.4%
Fiber Coverage
98%
Broadband Coverage
Fiber At Your Address
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