Fiber Internet
in San Francisco, CA
Compare fiber internet providers and find service available at your San Francisco address. Enter your address below to see which providers and plans are available at your home.
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Up to 10 Gbps
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Fiber Internet Providers in San Francisco
The following providers offer fiber internet service in and around San Francisco. Availability varies by address, so enter your address above to see which providers are available at your location.
| Provider | Connections | Max Fiber Speed | Check Availability |
|---|---|---|---|
 AT&T Internet | ConnectionsFiber | Max Fiber Speed5 Gbps | Check Availability |
 Frontier | ConnectionsFiber | Max Fiber Speed7 Gbps | Check Availability |
 EarthLink Fiber | ConnectionsFiber | Max Fiber Speed5 Gbps | Check Availability |
 Sonic | ConnectionsFiber | Max Fiber Speed10 Gbps | Check Availability |
 Fidium | ConnectionsFiber | Max Fiber Speed2 Gbps | Check Availability |
 Race Communications | ConnectionsFiber | Max Fiber Speed10 Gbps | Check Availability |
 Wyyerd Fiber | ConnectionsFiber | Max Fiber Speed8 Gbps | Check Availability |
 GFiber | ConnectionsFiber | Max Fiber Speed2 Gbps | Check Availability |
 Spectrum | ConnectionsFiber | Max Fiber Speed2 Gbps | Check Availability |
 Ting Internet | ConnectionsFiber | Max Fiber Speed2 Gbps | Check Availability |
 Astound Broadband | ConnectionsFiber | Max Fiber Speed5 Gbps | Check Availability |
 GigabitNow | ConnectionsFiber | Max Fiber Speed5 Gbps | Check Availability |
 Aspire Fiber | ConnectionsFiber | Max Fiber Speed10 Gbps | Check Availability |
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How to Find Fiber Internet in San Francisco
- 1
Enter your address
Type in your San Francisco address above to see which providers are available at your location.
- 2
See available providers
We’ll show the fiber providers available at your address, along with their plans and pricing.
- 3
Compare plans and choose
Compare speeds, prices and features to find the best fiber internet plan for your needs.
Is Fiber Optic Internet Available in San Francisco?
Yes, fiber internet is widely available in San Francisco, with AT&T and Sonic providing two of the city’s most significant residential fiber networks. Xfinity and Astound also report direct fiber service in parts of the city, while several smaller networks serve individual buildings or limited pockets.
San Francisco’s dense housing makes building-level availability especially important. A provider may have fiber infrastructure on a block without every apartment or multi-unit property being connected to that network. Sonic has a meaningful local fiber footprint, while AT&T reports fiber across a very large share of the city.
As a result, San Francisco can offer excellent fiber competition at some addresses but a much narrower set of choices at others. The relevant question is not simply whether a provider operates in the city, but whether the building itself is connected and which speed tiers are offered there.
Fiber Internet Speeds in San Francisco
San Francisco has some of the fastest residential fiber options in California. Sonic reports symmetrical speeds up to 10 Gbps, while AT&T Fiber advertises up to 5 Gbps. Xfinity and Astound add additional direct-fiber options with multi-gigabit service in parts of the city.
The combination of high-density housing and multiple fiber networks means some San Francisco buildings can have unusually strong broadband choices. Symmetrical fiber is particularly useful for large uploads, cloud backups, remote production work and other applications where upstream capacity matters as much as download speed.
There are even higher-speed specialty fiber networks reported in very small parts of the city, but those should not be treated as typical residential availability. For most households, Sonic’s 10 Gig and AT&T’s 5 Gig tiers represent the more relevant high-end fiber benchmarks, subject to building-level availability.
Frequently Asked Questions
Which fiber internet providers are available in San Francisco?
San Francisco has multiple fiber providers, including AT&T Fiber and Sonic, with Xfinity, Astound and smaller networks serving additional buildings and areas.
How do I check if fiber internet is available at my San Francisco address?
Enter your San Francisco address above to check the building itself. In a dense city with many apartments and multi-unit properties, fiber availability can vary even between neighboring buildings.
What fiber internet speeds are available in San Francisco?
San Francisco fiber service extends from standard gigabit plans to multi-gigabit tiers. Sonic reports up to 10 Gbps, while AT&T advertises speeds up to 5 Gbps.
How much does fiber internet cost in San Francisco?
Fiber pricing in San Francisco varies by provider and building. Standard gigabit service generally costs less than the fastest multi-gigabit tiers, and plan availability can differ by property.
What is the fastest fiber internet available in San Francisco?
Sonic reports symmetrical fiber speeds up to 10 Gbps across parts of San Francisco. AT&T Fiber offers speeds up to 5 Gbps and has a broader reported footprint.
Is fiber internet available throughout San Francisco?
No. Fiber is widely available in San Francisco, but building-level connectivity matters. Two nearby apartment buildings can have different providers and maximum speeds.
