Fiber Internet in San Francisco, California - Best Fiber Providers (February 2026)
San Francisco residents have access to 3 fiber internet providers, with Xfinity leading at 97.7% coverage and AT&T Internet covering 89.3% of the city. Fiber plans start at $35/mo, offering symmetrical speeds ideal for streaming, gaming, and remote work.
Best Fiber Internet Providers in San Francisco
Residents of San Francisco can choose from 3 fiber internet providers. Below is a side-by-side comparison of fiber plans available to San Francisco's 808,988 residents.
| Provider | Technology | Coverage | Max Speed | Starting Price |
|---|---|---|---|---|
| Xfinity | FTTP/HFC | 97.7% | 1,200 Mbps | $35/mo |
| AT&T Internet | FTTH/FTTP | 89.3% | 2,000 Mbps | $55/mo |
| Verizon Fios | FTTH | 36.8% | 940 Mbps | $49.99/mo |
Xfinity Fiber in San Francisco, CA
Covering roughly 97.7% of San Francisco, Xfinity is an established fiber provider in the area. Leveraging FTTP/HFC infrastructure, Xfinity provides low-latency, high-bandwidth service well suited for streaming, gaming, and remote work.
| Plan | Download Speed | Price |
|---|---|---|
| Connect More | 200 Mbps | $35/mo |
| Fast | 400 Mbps | $55/mo |
| Superfast | 800 Mbps | $65/mo |
| Gigabit | 1,200 Mbps | $75/mo |
Get Xfinity in San Francisco: 1-844-963-0138 - Check plans and availability at your address.
Check Xfinity Plans in San Francisco
AT&T Internet Fiber in San Francisco, CA
Approximately 89.3% of San Francisco addresses have access to AT&T Internet's fiber network. The provider's FTTH/FTTP network delivers reliable, symmetrical fiber speeds with latency consistently below 5 milliseconds.
| Plan | Download Speed | Price |
|---|---|---|
| Fiber 300 | 300 Mbps | $55/mo |
| Fiber 500 | 500 Mbps | $65/mo |
| Fiber 1 Gig | 1,000 Mbps | $80/mo |
| Fiber 2 Gig | 2,000 Mbps | $150/mo |
AT&T Internet Availability: Call 1-855-850-5977 to verify fiber service at your San Francisco address and explore current deals.
Check AT&T Internet Plans in San Francisco
Verizon Fios Fiber in San Francisco, CA
With 36.8% coverage across San Francisco, Verizon Fios delivers fiber internet to a significant portion of the city. Using FTTH technology, Verizon Fios delivers symmetrical upload and download speeds that outperform traditional cable and DSL connections.
| Plan | Download Speed | Price |
|---|---|---|
| Fios 300 | 300 Mbps | $49.99/mo |
| Fios 500 | 500 Mbps | $69.99/mo |
| Fios 1 Gig | 940 Mbps | $89.99/mo |
Get Verizon Fios in San Francisco: 1-855-387-1456 - Check plans and availability at your address.
Check Verizon Fios Plans in San Francisco
Fiber Internet Market in San Francisco
Fiber-to-the-home internet in San Francisco, CA has become increasingly accessible as 3 providers build out their networks across a major city of 808,988 residents. The city enjoys a competitive broadband landscape for fiber customers, with Xfinity covering 97.7% of addresses. The region's Mediterranean climate creates no special challenges for fiber infrastructure, ensuring consistent performance.
Best Neighborhoods for Fiber in San Francisco
Neighborhoods in San Francisco with the highest fiber penetration include areas near the city's commercial core, established residential subdivisions, and recent master-planned communities. Xfinity and AT&T Internet often compete directly in these areas, driving better service and pricing for consumers.
Fiber Expansion Updates
Recent fiber expansion in San Francisco has been driven by a combination of provider competition and California's broadband investment programs. Xfinity and AT&T Internet have both increased their coverage footprints over the past year, with the California's Broadband for All initiative helping fund deployment in areas where the business case alone might not support immediate buildout.
Fiber Internet Technology in San Francisco
The fiber internet available in San Francisco relies on fiber-to-the-home technology, where glass optical cables carry data as light signals directly to your residence. This approach delivers performance that traditional copper-based internet services in San Francisco cannot replicate.
Symmetrical speeds are a hallmark of fiber internet in San Francisco. Unlike cable internet where upload speeds are typically a fraction of download speeds, fiber plans from providers like Xfinity deliver equal upload and download performance. This is critical for San Francisco residents who work from home, participate in video conferences, or upload content to cloud services.
Latency as low as 1-5 milliseconds makes fiber in San Francisco ideal for online gaming, real-time video streaming, and VoIP calls. Cable internet typically delivers 15-30ms latency, while DSL can reach 25-50ms. For San Francisco households with multiple simultaneous users, fiber's low latency means smoother performance across all devices.
Future-proof infrastructure means San Francisco's fiber networks can be upgraded to support speeds of 10 Gbps and beyond without replacing the physical cables. As bandwidth demands increase with 4K/8K streaming, virtual reality, and smart home devices, fiber subscribers in San Francisco are positioned for decades of reliable, high-speed service.
How to Choose Fiber in San Francisco
With 3 fiber providers in San Francisco, start by checking which ones serve your exact address. Xfinity has the widest coverage at 97.7%, making it available to most residents. If AT&T Internet is also available, compare their current promotional offers side by side, as competition often results in introductory discounts. Plans start at $35/mo, though mid-tier options between $50-70/mo typically offer the best value for most households.
Speed considerations: A 300 Mbps fiber plan handles 5-8 devices comfortably, including 4K streaming on multiple TVs. Households with 10+ devices, avid gamers, or remote workers transferring large files should consider 500 Mbps to 1 Gbps plans. Multi-gigabit plans (2 Gbps+) are best suited for tech enthusiasts and home businesses in San Francisco.
Budget planning: Fiber prices in San Francisco start as low as $35/mo. Consider the total cost including equipment fees, installation charges, and any promotional rate expirations. Many San Francisco fiber providers offer no-contract plans that provide flexibility.
Other Internet Providers in San Francisco
While fiber is the premium choice, San Francisco residents in areas without fiber coverage may also consider these providers:
- T-Mobile (65.4% coverage): Call 1-844-275-9311 | View Plans
- HughesNet (100.0% coverage): Call 1-855-543-5405 | View Plans
- Viasat (100.0% coverage): Call 1-855-463-9333 | View Plans
Why Fiber Matters for San Francisco Residents
Fiber internet has become a defining feature of modern life in San Francisco, where 808,988 residents increasingly rely on high-speed connectivity for work, education, and entertainment. The technology's inherent advantages over cable and DSL make fiber the preferred choice for San Francisco households seeking reliable performance.
For families in San Francisco with school-age children, fiber internet supports simultaneous virtual learning, homework research, and educational streaming without the buffering or slowdowns common on cable and DSL connections. The growing adoption of cloud-based educational tools makes reliable, high-speed internet a necessity rather than a luxury for San Francisco households.
Gaming enthusiasts in San Francisco benefit significantly from fiber's low latency, typically measured at 1-5 milliseconds compared to 15-30ms for cable. This reduced latency translates to a competitive advantage in online multiplayer games and smoother gameplay in titles requiring real-time responsiveness. Fiber also handles the increasingly large game downloads and updates that modern gaming demands.
Smart home technology adoption is accelerating across San Francisco, with security cameras, smart thermostats, voice assistants, and connected appliances all requiring consistent bandwidth. Fiber internet provides the stable, always-on connectivity that smart home ecosystems depend upon, ensuring devices remain responsive and security footage uploads without interruption.
Content creators and freelancers in San Francisco find fiber internet essential for their workflow. Whether uploading video projects, sharing large design files, or conducting live streams, fiber's symmetrical upload speeds eliminate the bottleneck that cable internet creates. This makes fiber the professional choice for San Francisco's growing community of remote workers and digital creators.
Healthcare in San Francisco increasingly relies on telehealth appointments, remote patient monitoring, and electronic health records that demand reliable internet connectivity. Fiber internet provides the consistent, low-latency connection that makes video consultations with doctors seamless and ensures medical data transfers complete without interruption.
Home businesses in San Francisco operate more effectively with fiber internet's dedicated bandwidth and symmetrical speeds. Whether running an e-commerce store, providing virtual consultations, or managing cloud-based business software, fiber ensures that business operations aren't degraded by other household internet usage happening simultaneously.
Fiber Internet FAQs for San Francisco, CA
How much does fiber internet cost in San Francisco?
Fiber internet in San Francisco starts at $35/mo from Xfinity. Most providers offer tiered plans ranging from entry-level speeds around 200-300 Mbps to gigabit and multi-gigabit options. Typical households find that plans between $50-80/mo deliver excellent performance for streaming, gaming, and remote work.
Is fiber internet available throughout San Francisco?
Fiber coverage in San Francisco varies by neighborhood. Xfinity has the widest reach at 97.7% of the city. Central and established neighborhoods generally have the best multi-provider options, while some newer or more remote areas may have limited fiber access. Check your specific address for the most accurate availability information.
How long does fiber installation take in San Francisco?
Standard fiber installation in San Francisco typically takes 2-4 hours for a new residential setup. If your home already has fiber infrastructure from a prior subscriber, installation may be completed in under an hour. Most providers in San Francisco offer free professional installation with a new service agreement.
Does fiber internet have data caps in San Francisco?
Most fiber providers in San Francisco, including AT&T Internet and Verizon Fios, do not enforce data caps on their fiber plans. This is a significant advantage over cable internet, where providers may impose monthly usage limits. Check individual provider policies, as data cap terms can vary by plan tier.
How does San Francisco's fiber compare to nearby cities?
San Francisco's fiber market, with 3 providers covering a population of 808,988, is competitive for the region. The combination of provider competition and state broadband investment has positioned San Francisco residents with solid fiber options.
What is the fastest fiber internet available in San Francisco?
The fastest fiber internet in San Francisco reaches up to 2 Gbps from select providers. Multiple providers offer gigabit-class service: Xfinity (1,200 Mbps for $75/mo), AT&T Internet (1,000 Mbps for $80/mo), Verizon Fios (940 Mbps for $89.99/mo). For most residential uses, even 500 Mbps fiber delivers excellent performance; multi-gigabit plans are best suited for tech enthusiasts and home businesses.
Explore More Internet Options in San Francisco
- All Internet Providers in San Francisco, CA
- Xfinity Plans and Coverage
- AT&T Internet Plans and Coverage
- Verizon Fios Plans and Coverage
- Cheap Internet in San Francisco
- Cable Internet in San Francisco
Disclosure: InternetProviders.ai may earn commission from purchases made through links on this page. This does not influence our rankings or recommendations. Our editorial team independently evaluates providers based on speed, coverage, pricing, and customer satisfaction to help you make the best decision for your household. All prices and availability are subject to change. Data last verified February 2026.