Xfinity internet in San Francisco, CA
Xfinity reports service to about 98% of residential locations in San Francisco, California, which ranks it #1 of 10 providers with meaningful coverage and makes it the provider reaching the most locations. Xfinity is Comcast's cable internet service, one of the largest in the country. It is widely available in cities and suburbs, and often bundles internet with TV and mobile service.
How Xfinity compares in San Francisco
| # | Provider | Technology (varies by address) | Locations covered |
|---|---|---|---|
| 1 | Xfinity | Cable | 98% |
| 2 | AT&T | Fiber, DSL, Fixed wireless | 97% |
| 3 | Unwired | Fixed wireless | 94% |
| 4 | Etheric Communications | Fixed wireless | 77% |
| 5 | T-Mobile Home Internet | Fixed wireless | 73% |
| 6 | Verizon | Fiber, Fixed wireless | 67% |
| 7 | Sonic Telecom | Fiber | 32% |
| 8 | Astound Broadband | Fiber, Cable | 25% |
Share of residential locations in San Francisco where each provider reports service (FCC National Broadband Map, data as of December 31, 2025). See all providers in San Francisco.
Xfinity vs other providers
What technologies are available in San Francisco?
Fiber reaches about 44% of locations in San Francisco, so it is available in parts of the area but not everywhere. Gigabit-class service (1,000 Mbps down) is reported for about 74% of locations. Fixed wireless home internet is reported for about 99%+ of locations.
FCC National Broadband Map, data as of December 31, 2025: share of residential locations in San Francisco that providers report they can serve. City-level figures, not your address.
Xfinity in places near San Francisco
- Mill Valley, CA (99%)
- San Anselmo, CA (99%)
- Sausalito, CA (99%)
- Daly City, CA (100%)
- Larkspur, CA (99%)
- Pacifica, CA (100%)
- Tiburon, CA (99%)
- San Bruno, CA (100%)
Plans and pricing
Plan prices and promotions change often and vary by address, so we do not list them. See Xfinity's current offers at your address with its availability checker.
Frequently asked questions
Is Xfinity available in San Francisco?
Xfinity reports service to about 98% of residential locations in San Francisco, per FCC data as of December 31, 2025. That ranks it #1 of 10 providers with meaningful coverage here. Availability depends on your exact address.
What type of internet does Xfinity offer in San Francisco?
Xfinity offers cable service across its footprint. The FCC summary does not say which technology reaches each address, so check your address with the provider.
Who are the main Xfinity competitors in San Francisco?
Other providers reporting at least 10% coverage in San Francisco include AT&T (97%), Unwired (94%), Etheric Communications (77%), T-Mobile Home Internet (73%).
How do I check Xfinity availability at my address?
Use Xfinity's own address checker, or enter your ZIP code here to compare all providers for your area.
Compare all providers for your ZIP code
All about Xfinity · Internet in San Francisco · Xfinity in California · California · How we rank