Find the Best Internet Providers in San Francisco CA
Compare fiber cable and 5G home internet from every provider available in San Francisco. See real pricing speeds and availability at your exact address from Mission to Sunset to Marina to Bayview to the residential blocks throughout the city — including local-favorite providers Sonic and Monkeybrains that you won't find anywhere else.
Serving San Francisco across 30+ residential zip codes from 94102 Civic Center to 94134 Visitacion Valley.
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Providers Available
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Neighborhoods Covered
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Zip Codes
$30/mo
Starting Price/mo
Internet Providers Available in San Francisco CA
| Provider | Price | Speed | Type | Data Cap | Contract | Best For | |
|---|---|---|---|---|---|---|---|
| Xfinity | $30/mo | 2 Gbps | Cable | 1.2 TB | None | Broad SF cable coverage | View Plans |
| AT&T Fiber | $55/mo | 5 Gbps | Fiber | None | None | Approximately 98% SF fiber coverage with symmetric speeds | View Plans |
| Sonic | $49.99/mo | 10 Gbps | Fiber | None | None | Local SF fiber — fastest available, ~40% city coverage | View Plans |
| T-Mobile Home Internet | $50/mo | ~245 Mbps | 5G Home | None | None | Available in San Francisco | View Plans |
Provider availability on this page is verified against the FCC National Broadband Map (June 2025 data). Coverage is provider-reported and updated periodically.
Best Internet Providers in San Francisco CA
Xfinity
Xfinity is the dominant cable internet provider in San Francisco. Plans start at $30/mo for 75 Mbps and go up to 2 Gbps with a 1.2 TB monthly data cap. For SF households where Sonic or AT&T Fiber is available those are typically the better choices — symmetric speeds and no data caps. Many SF households qualify for Xfinity Internet Essentials at $9.95/mo. Call (888) 224-5870 for current pricing.
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AT&T Fiber
AT&T Fiber has approximately 98 percent coverage in San Francisco — among the most extensive fiber footprints of any major U.S. city. Plans start at $55/mo for 300 Mbps and go up to 5 Gbps with symmetric upload and download speeds. AT&T Fiber is the practical fiber default for SF households where Sonic is not available (about 60 percent of the city). For San Francisco professional households working from home symmetric speeds matter for video calls cloud-based work and uploading work files. Call (888) 224-5870 to check AT&T Fiber at your San Francisco address.
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Sonic
Sonic is San Francisco's local-favorite fiber internet provider — and locally regarded as the best ISP in the city. Plans start at $49.99/mo for 1 Gbps and go up to 10 Gbps with symmetric upload and download speeds. Sonic covers approximately 40 percent of San Francisco city blocks with strong coverage in the Sunset Parkside Mission Union Square and Richmond District; coverage is more limited in Bayview and Hunters Point. Sonic does not have data caps does not require contracts and operates as a genuine local Northern California provider (headquartered in Santa Rosa) with substantially better-rated customer service than national providers. Notable quirk: Sonic fiber plans technically require a home phone line (VoIP at no extra cost) — a regulatory artifact that does not affect pricing. Call (888) 224-5870 to check Sonic at your San Francisco address.
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T-Mobile Home Internet
Covering around 72% of San Francisco, T-Mobile Home Internet turns a small 5G gateway into home internet with no technician visit. It ships in a few days, self-installs in about 15 minutes, and runs a flat $50/mo with no contract and no data cap. Expect 150-245 Mbps depending on local tower load — plenty for most households. Call (888) 224-5870 for an address-specific read on T-Mobile speeds in San Francisco.
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San Francisco Neighborhoods We Cover
Internet Service by San Francisco Neighborhood
Mission
Sunset
Marina
Richmond
Bayview
Castro
Internet in San Francisco — What You Need to Know
San Francisco Is NOT a Spectrum Market
For San Francisco households researching internet: Spectrum does not operate in San Francisco at all. The cable provider in SF is Xfinity (Comcast). The fiber providers are AT&T Fiber and Sonic (Sonic is the locally-favored alternative). Monkeybrains is a SF-only wireless cooperative. Articles and ads about Spectrum service in California typically do not apply to San Francisco addresses. For SF households the practical wired internet decisions are Sonic fiber vs AT&T Fiber vs Xfinity cable — and Monkeybrains wireless as a strong alternative. Call (888) 224-5870 to check what reaches your specific SF address.
Sonic — Locally Regarded as the Best SF Internet Provider
Sonic is meaningfully different from national providers — a genuine local Northern California company (headquartered in Santa Rosa) operating its own fiber network in approximately 40 percent of SF. Locally Sonic is regarded as the best internet provider in SF — by CNET by SF tech-industry professionals on local recommendations forums and by SF residents generally. The reasons: symmetric speeds up to 10 Gbps no data caps no contracts substantially better customer service than AT&T or Xfinity and meaningful local-business credentials. Coverage is strong in Sunset Parkside Mission Union Square and Richmond District; more limited in Bayview and Hunters Point. Call (888) 224-5870 to check Sonic at your address.
Monkeybrains — SF's Local Wireless Cooperative
Monkeybrains is genuinely SF-only — a community-oriented local wireless cooperative that exists nowhere else. Plans start at $35/mo for fixed wireless service up to 1 Gbps with no data caps no contracts. The model works through line-of-sight wireless to rooftop antennas distributed across SF — coverage is meaningful but not universal (depends on whether your building has line-of-sight to a Monkeybrains antenna). For SF households who can get Monkeybrains coverage it is often the cheapest meaningful-speed internet option in the city — and meaningful for households who value local-business support. Call (888) 224-5870 to check Monkeybrains for your address.
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Internet Providers by Location
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Frequently Asked Questions About Internet in San Francisco CA
For most San Francisco households Sonic at $49.99/mo for 1 Gbps with symmetric speeds is the locally-favored best choice — Sonic covers approximately 40 percent of the city. AT&T Fiber at $55/mo with approximately 98 percent coverage is the broadly available fiber alternative. Xfinity at $30/mo is the cable option with the lowest entry price — but watch the 1.2 TB monthly data cap. Monkeybrains at $35/mo is the SF-only wireless cooperative beloved by SF residents. Many SF households qualify for Xfinity Internet Essentials at $9.95/mo. Call (888) 224-5870 to check all four at your SF address.
No — Spectrum does not operate in San Francisco at all. The cable provider in SF is Xfinity (Comcast). Articles and ads about Spectrum service in California typically do not apply to SF addresses. For SF households the practical wired internet decisions are Sonic fiber vs AT&T Fiber vs Xfinity cable — and Monkeybrains wireless as a strong alternative. Call (888) 224-5870 for SF-specific recommendations.
Sonic is San Francisco's local-favorite fiber internet provider — a genuine local Northern California company (headquartered in Santa Rosa) operating its own fiber network in approximately 40 percent of SF. SF residents prefer Sonic for: symmetric speeds up to 10 Gbps no data caps no contracts substantially better customer service than national providers and meaningful local-business credentials. Plans start at $49.99/mo for 1 Gbps. Where available it is typically the best choice. Call (888) 224-5870 to check at your SF address.
Monkeybrains is San Francisco's local wireless internet cooperative — a community-oriented SF-only provider. Plans start at $35/mo for fixed wireless up to 1 Gbps with no data caps no contracts. Installations require line-of-sight to one of Monkeybrains's SF rooftop antennas so coverage depends on building location. Where available Monkeybrains is often the cheapest meaningful-speed internet option in the city. For households who value local-business support over national providers Monkeybrains is meaningful. Call (888) 224-5870 to check at your SF address.
For SF households where Sonic is available (about 40 percent of the city) it is usually the better choice — symmetric speeds up to 10 Gbps no data caps and substantially better-rated customer service than AT&T. Where Sonic is not available AT&T Fiber at $55/mo with 98 percent SF coverage is the practical fiber alternative. Call (888) 224-5870 to compare at your address.
Yes — Xfinity imposes a 1.2 TB monthly data cap on standard plans in San Francisco. An unlimited data option is available for an additional monthly fee (typically $30/mo). For heavy-use households Sonic or AT&T Fiber where available are meaningfully better because neither has data caps. Call (888) 224-5870 to compare all-in pricing.
Many SF households qualify particularly families with school-age children and seniors on fixed incomes. Eligibility includes households with K-12 students receiving free or reduced-price lunch SNAP recipients Medicaid recipients SSI for those 65 and older Veterans Pension Benefit and several other federal assistance programs. San Francisco Unified School District participates in CEP so most households with school-age children qualify. The program offers 75 Mbps at $9.95/mo. Call (888) 224-5870 for the eligibility check.
Call us at (888) 224-5870. We confirm the new provider is available at your specific SF address (which matters meaningfully — Sonic Monkeybrains and AT&T Fiber each serve different parts of the city) schedule the installation and make sure your current service stays active until the new connection is up and tested. Most SF switches complete within 1 to 5 business days. Some SF installations (Monkeybrains requires line-of-sight rooftop antenna; Sonic requires VoIP phone line) take longer for first setup. Never cancel your current internet before the new one is confirmed working.
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