Internet providers in Foster City, CA
Foster City is a city in California with about 32,964 residents and roughly 13,793 residential locations that internet providers can report on. The table below compares the providers that report service here.
Compare internet providers in Foster City, CA
Share of residential locations in Foster City where each provider reports service, from the FCC National Broadband Map (data as of December 31, 2025). Availability depends on your exact address.
| # | Provider | Technology (varies by address) | Locations covered | |
|---|---|---|---|---|
| 1 | Xfinity | Cable | 99% | |
| 2 | Etheric Communications | Fixed wireless | 86% | |
| 3 | AT&T | Fiber, DSL, Fixed wireless | 84% | Check availability |
| 4 | T-Mobile Home Internet | Fixed wireless | 72% | |
| 5 | Verizon | Fiber, Fixed wireless | 67% | Check availability |
| 6 | California Internet | Fixed wireless | 11% | |
| 7 | Sail Internet Holdings | Fixed wireless | 7% |
Satellite internet
| 1 | HughesNet | Satellite | 99%+ | |
| 2 | Viasat | Satellite | 99%+ | |
| 3 | Starlink | Satellite | 99%+ |
Satellite service is available at nearly every address but typically has higher latency than wired options.
Provider-reported coverage does not guarantee service or speeds at a specific address. Some "Check availability" links are affiliate links; we may earn a commission at no cost to you. How we make money.
What to know about internet in Foster City
Xfinity reports service to the most residential locations in Foster City, about 99%. 5 providers report coverage of at least half of locations (Xfinity, Etheric Communications, AT&T, T-Mobile Home Internet, and Verizon), so the market looks competitive. Etheric Communications and T-Mobile Home Internet offer fixed wireless home internet, an option if you prefer no cable or fiber installation.
What technologies are available in Foster City?
Fiber reaches about 41% of locations in Foster City, so it is available in parts of the area but not everywhere. Gigabit-class service (1,000 Mbps down) is reported for about 97% of locations. DSL is still reported for about 41% of locations, which can be a fallback where fiber and cable do not reach. Fixed wireless home internet is reported for about 97% of locations.
FCC National Broadband Map, data as of December 31, 2025: share of residential locations in Foster City that providers report they can serve. City-level figures, not your address.
Foster City at a glance
About 98% of households in Foster City have a broadband subscription, 6 points above the California average of 92%.
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2023).
Internet providers in places near Foster City
- San Mateo, CA (3 mi)
- Redwood City, CA (4 mi)
- Belmont, CA (4 mi)
- San Carlos, CA (5 mi)
- Burlingame, CA (6 mi)
- Menlo Park, CA (8 mi)
- Millbrae, CA (9 mi)
- Hayward, CA (9 mi)
- South San Francisco, CA (9 mi)
- East Palo Alto, CA (9 mi)
- San Lorenzo, CA (10 mi)
- San Leandro, CA (11 mi)
- San Bruno, CA (11 mi)
- Cherryland, CA (11 mi)
- Ashland, CA (12 mi)
- Alameda, CA (12 mi)
- Half Moon Bay, CA (12 mi)
- Newark, CA (13 mi)
- Pacifica, CA (13 mi)
- Union City, CA (13 mi)
Frequently asked questions
Is fiber internet available in Foster City?
Yes, in part. About 41% of residential locations in Foster City can get fiber, 97% can get cable, and about 97% can get gigabit-class speeds, per FCC data. Availability depends on your exact address.
Which internet provider has the widest coverage in Foster City?
Xfinity reports service to about 99% of residential locations in Foster City, the most of any provider, per FCC data. Availability still depends on your address.
How many internet providers serve Foster City?
7 providers report service to at least 2% of locations in Foster City, and 5 cover at least half. Satellite (HughesNet, Viasat, Starlink) is also available nearly everywhere.
What is the difference between fiber, cable and DSL?
Fiber offers the fastest and most consistent speeds, cable is widely available with high download speeds, and DSL runs over phone lines and is usually slower. See our guide for details.
What internet speed do I need in Foster City?
Most households are well served by 100–300 Mbps. Heavy streaming, gaming or many connected devices may benefit from 500 Mbps or more.
Check your exact address
Coverage for a whole community cannot tell you what is available at your door. Enter your ZIP code, then confirm with each provider.
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