Best Internet Providers in Foster City, CA
All 8 providers, ranked by coverage, speed and customer ratings
Find internet availability by address in Foster City, CA
Foster City has 8 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Fiber, Cable, DSL, and Fixed Wireless internet are available in the city. Reviews are grouped by provider and the type of service they offer, covering all 4 available internet technologies in Foster City.
Ranks compare Foster City with the 1,383 US suburban and regional cities (25,000 to 49,999 people), the tiers of our fastest-cities rankings.
The Best Internet in Foster City, CA at a Glance
Foster City Internet Providers, Ranked by Coverage, Speed and Customer Ratings
XFINITY
Connection
Customer Rating
Fiber
Cable
EarthLink
Connection
Customer Rating
Fiber
DSL
Fixed Wireless
AT&T
Connection
Customer Rating
Fiber
DSL
Fixed Wireless
Etheric Networks
Connection
Customer Rating
Fixed Wireless
Providers with less than 1% coverage in this city are excluded from the list. To see if one of these providers is available at your home, please use the address search above.
Speed and technology may vary by address for all providers. Please note we may have a financial relationship with some of the providers above, which does not impact the customer ratings displayed. Customer ratings listed above are national ratings, local Foster City ratings may vary and are shown below.
Who is the Best Internet Provider in Foster City, CA?
T-Mobile Home Internet is the best internet provider in Foster City based on California customer satisfaction ratings and reviews. Based on our extensive and unbiased survey, T-Mobile Home Internet had the best reviews at the local, state, and national levels versus all available providers in Foster City, making it a solid recommendation among providers with reviews. T-Mobile Home Internet is an option for 97.21% of the city.
Click here to get T-Mobile Home Internet
or call 1-833-601-2935
Which Providers are Available at my Home in Foster City?
Coverage changes block by block. Pick a provider and a technology to see where its service reaches: the darker the area, the larger the share of homes it covers. For your exact address, use the address search above.
Coverage map for each provider in Foster City
- AT&T - fiber coverage map
- EarthLink - fiber coverage map
- XFINITY - cable coverage map
- Etheric Networks - fixed wireless coverage map
- Verizon - fixed wireless coverage map
- GeoLinks - fixed wireless coverage map
- T-Mobile Home Internet - fixed wireless coverage map
- Sail Internet - dsl coverage map
- AT&T - dsl coverage map
- EarthLink - dsl coverage map
- AT&T - fixed wireless coverage map
- EarthLink - fixed wireless coverage map
- XFINITY - fiber coverage map
How Foster City Compares to Places Its Size
Foster City's report card score is in the top 38% and its connectivity index is in the top 9%.
| Measure | Foster City | Rank among US suburban and regional cities (25,000 to 49,999 people) | San Mateo County | California | US | Leader |
|---|---|---|---|---|---|---|
| ISP Report Card inputs: what providers offer here | ||||||
| Fiber availability | 68.9% | bottom 33% | 84.9% | 62.4% | 71.5% | 25 places at 100.0% |
| Average top speed | 3,849 Mbps | top 40% | 5,175 Mbps | 3,834 Mbps | 3,486 Mbps | Hixson, TN (25,000 Mbps) |
| Providers at a typical address | 9 | top 12% | 9.7 | 8 | 7.1 | San Lorenzo, CA (13) |
| Connectivity index inputs: how much households need and use the internet | ||||||
| People per household | 2.5 | bottom 41% | 2.9 | 3.0 | 2.7 | Kiryas Joel, NY (5.1) |
| Workers who work from home | 34% | top 2% | 25% | 17% | 15% | Venice, CA (47%) |
| Homes with a computer, tablet or phone | 99% | top 2% | 98% | 97% | 96% | 16 places at 100% |
| Homes with internet | 98% | top 2% | 96% | 94% | 91% | 13 places at 99% |
| Homes on fiber, cable or DSL | 91% | top 3% | 85% | 79% | 76% | Burke, VA and Colleyville, TX and 3 more (94%) |
| More about the households here | ||||||
| Homes with a desktop or laptop | 95% | top 3% | 89% | 84% | 81% | University Park, TX (99%) |
| Median household income | $201,878 | top 2% | $166,917 | $111,728 | $93,246 | Scarsdale, NY ($244,191) |
| Residents in school (6th grade to college) | 13% | bottom 25% | 15% | 17% | 16% | Rexburg, ID (71%) |
Fiber reaches 68.9% of homes in Foster City, against 84.9% across San Mateo County and 62.4% across California. Households in Foster City are smaller than the US average (2.5 people against 2.7); 34% of workers work from home (US 15%); and the median household income is $201,878 (US $93,246).
Our demographic data is sourced from the latest 5-year release of the American Community Survey by the US Census Bureau.
Fiber, 5G, Cable and DSL Internet in Foster City
Which Fiber Internet Providers are Available in Foster City?
EarthLink Fiber in Foster City, CA
Availability:
68.2%
Customer Rating:
(6)
Avg. Download Speed
4,634 Mbps
EarthLink offers Fiber service to 68.2% of Foster City homes. Across the city, EarthLink Fiber has speeds up to 4,634 Mbps, with speeds from 1,000 Mpbs up to 5,000 Mbps depending on the address. Upload speeds are symmetrical, meaning they are exactly the same as download speeds for EarthLink Fiber. EarthLink Fiber is rated about the same as other types of internet service available in Foster City from EarthLink in terms of customer satisfaction.
AT&T Fiber in Foster City, CA
Availability:
68.2%
Customer Rating:
(542)
Avg. Download Speed
4,634 Mbps
AT&T offers Fiber service to 68.2% of Foster City homes. Across the city, AT&T Fiber has speeds up to 4,634 Mbps, with speeds from 1,000 Mpbs up to 5,000 Mbps depending on the address. Upload speeds are symmetrical, meaning they are exactly the same as download speeds for AT&T Fiber. AT&T Fiber is rated lower than other types of internet service available in Foster City from AT&T in terms of customer satisfaction.
XFINITY Fiber in Foster City, CA
Availability:
1.9%
Customer Rating:
(300)
Avg. Download Speed
2,000 Mbps
XFINITY from Comcast offers Fiber service to 1.9% of Foster City homes. Across the city, XFINITY Fiber has speeds up to 2,000 Mbps
Which Fixed Wireless and LTE Internet Providers are Available in Foster City?
Etheric Networks Fixed Wireless in Foster City, CA
Availability:
99.4%
Customer Rating:
(0)
Avg. Download Speed
250 Mbps
Etheric Networks offers Fixed Wireless service to 99.4% of Foster City homes. Across the city, Etheric Networks Fixed Wireless is the only type of service available from the company, with speeds up to 250 Mbps
T-Mobile Home Internet Fixed Wireless in Foster City, CA
Availability:
97.2%
Customer Rating:
(342)
Avg. Download Speed
96 Mbps
T-Mobile Home Internet offers Fixed Wireless service to 97.2% of Foster City homes. Across the city, T-Mobile Home Internet Fixed Wireless is the only type of service available from the company, with speeds up to 96 Mbps, with speeds from 25 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 3.0 and as high as 20, with an average of 19 Mbps throughout the city.
EarthLink Fixed Wireless in Foster City, CA
Availability:
93.6%
Customer Rating:
(4)
Avg. Download Speed
56 Mbps
EarthLink offers Fixed Wireless service to 93.6% of Foster City homes. Across the city, EarthLink Fixed Wireless has speeds up to 56 Mbps, with speeds from 25 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 3.0 and as high as 20, with an average of 10.0 Mbps throughout the city.
AT&T Fixed Wireless in Foster City, CA
Availability:
93.6%
Customer Rating:
(205)
Avg. Download Speed
56 Mbps
AT&T offers Fixed Wireless service to 93.6% of Foster City homes. Across the city, AT&T Fixed Wireless has speeds up to 56 Mbps, with speeds from 25 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 3.0 and as high as 20, with an average of 10.0 Mbps throughout the city.
Verizon Fixed Wireless in Foster City, CA
Availability:
91.4%
Customer Rating:
(362)
Avg. Download Speed
270 Mbps
Verizon offers Fixed Wireless service to 91.4% of Foster City homes. Across the city, Verizon Fixed Wireless is the only type of service available from the company, with speeds up to 270 Mbps, with speeds from 25 Mpbs up to 300 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 6.0 and as high as 20, with an average of 18 Mbps throughout the city.
GeoLinks Fixed Wireless in Foster City, CA
Availability:
33.2%
Customer Rating:
(0)
Avg. Download Speed
606 Mbps
GeoLinks offers Fixed Wireless service to 33.2% of Foster City homes. Across the city, GeoLinks Fixed Wireless is the only type of service available from the company, with speeds up to 606 Mbps, with speeds from 100 Mpbs up to 1,000 Mbps depending on the address. Upload speeds are symmetrical, meaning they are exactly the same as download speeds for GeoLinks Fixed Wireless.
Which Cable Internet Providers are Available in Foster City?
XFINITY Cable in Foster City, CA
Availability:
99.5%
Customer Rating:
(2077)
Avg. Download Speed
1,961 Mbps
XFINITY from Comcast offers Cable service to 99.5% of Foster City homes. Across the city, XFINITY Cable has speeds up to 1,961 Mbps, with speeds from 1,200 Mpbs up to 2,000 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 35 and as high as 250, with an average of 239 Mbps throughout the city. XFINITY Cable is rated the same as other types of internet service available in Foster City from XFINITY in terms of customer satisfaction.
Which DSL Internet Providers are Available in Foster City?
EarthLink DSL in Foster City, CA
Availability:
72.0%
Customer Rating:
(5)
Avg. Download Speed
87 Mbps
EarthLink offers DSL service to 72.0% of Foster City homes. Across the city, EarthLink DSL has speeds up to 87 Mbps, with speeds from 10 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 1.0 and as high as 20, with an average of 18 Mbps throughout the city. EarthLink DSL is rated higher than other types of internet service available in Foster City from EarthLink in terms of customer satisfaction.
AT&T DSL in Foster City, CA
Availability:
72.0%
Customer Rating:
(304)
Avg. Download Speed
87 Mbps
AT&T offers DSL service to 72.0% of Foster City homes. Across the city, AT&T DSL has speeds up to 87 Mbps, with speeds from 10 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 1.0 and as high as 20, with an average of 18 Mbps throughout the city. AT&T DSL is rated about the same as other types of internet service available in Foster City from AT&T in terms of customer satisfaction.
Sail Internet DSL in Foster City, CA
Availability:
7.3%
Customer Rating:
(0)
Avg. Download Speed
1,000 Mbps
Sail Internet offers DSL service to 7.3% of Foster City homes. Across the city, Sail Internet DSL is the only type of service available from the company, with speeds up to 1,000 Mbps
Internet in Foster City by Neighborhood and ZIP Code
Foster City has 1 ZIP code with its own page. Each row links to that place’s page.
Neighborhoods in Foster City
| Neighborhood | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|
ZIP codes in Foster City
| ZIP code | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| 94404 | 37,556 | 65.3% | 3,762 Mbps | 8.9 | B+ | 87/100 |
How Foster City Compares to Nearby Places
The 10 places nearest to Foster City that have their own pages are all within 8 miles. Among them, North Fair Oaks has the most homes with fiber (100.0%) and Hillsborough the fewest (72.7%); Foster City has 68.9%.
| Place | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| Foster City (this page) | 34,060 | 68.9% | 3,849 Mbps | 9 | B+ | 89/100 |
| San Mateo | 107,209 | 91.0% | 5,060 Mbps | 10.4 | A- | 86/100 |
| Redwood City | 92,381 | 85.0% | 6,621 Mbps | 9.6 | A- | 89/100 |
| Menlo Park | 41,500 | 91.4% | 7,678 Mbps | 10.9 | A | 91/100 |
| San Carlos | 32,231 | 97.0% | 4,714 Mbps | 9.8 | A | 94/100 |
| Burlingame | 31,625 | 86.5% | 3,127 Mbps | 9.9 | A- | 80/100 |
| Belmont | 29,185 | 93.5% | 8,015 Mbps | 9.1 | A | 88/100 |
| Hillsborough | 13,810 | 72.7% | 3,606 Mbps | 7.5 | B | 96/100 |
| North Fair Oaks | 10,906 | 100.0% | 9,370 Mbps | 10.3 | A+ | 80/100 |
| Atherton | 8,885 | 86.1% | 8,455 Mbps | 9.7 | A- | 92/100 |
| Highlands-Baywood Park | 486 | 100.0% | 5,000 Mbps | 10 | A | 98/100 |
Who is the Fastest Internet Provider in Foster City?
According to unbiased feedback from real internet customers, they reported being happiest with speeds provided by T-Mobile Home Internet. On the other hand, based on data provided by the internet providers to the FCC, AT&T and EarthLink should have faster speeds at a local level. While we typically put more weight on real-world customer ratings, we display both satisfaction and technical maximum information for customers to decide for themselves.
Data Reported to FCC by ISPs: Average Maximum Available in Foster City
| AT&T | 5,000 |
|---|---|
| EarthLink | 5,000 |
| XFINITY from Comcast | 2,000 |
| GeoLinks | 1,000 |
| Sail Internet | 1,000 |
| Verizon | 300 |
| Etheric Networks | 250 |
| Viasat | 100 |
| T-Mobile Home Internet | 100 |
| HughesNet | 25 |
How fast is your internet?
Test your connection here and see it next to the speeds providers advertise in Foster City. It takes about 20 seconds and, on a fast line, can move a few hundred MB of data.
Customer Ratings for Foster City Internet Providers
Based on 387 reviews from California internet customers, T-Mobile Home Internet is the best internet service provider for Foster City residents. T-Mobile Home Internet was rated at an average of 4.11 out of 5 in our report for overall customer satisfaction. Verizon wins for second-place in California, with 3.61 out of 5 stars and 91.4% coverage in Foster City.
At a national level, based on 4603 national reviews for any of the providers listed above, T-Mobile Home Internet is rated higher than any other provider, with a rating of 4.02 out of 5.
Local, State, and National Ratings for all Foster City Internet Providers
The table below shows average customer ratings from customers in Foster City, California, and customers throughout the country.
| ISP / Tech Type | Foster City Overall | California Overall | National Overall | For Service | ||
|---|---|---|---|---|---|---|
| T-Mobile Home Internet | (0) | (27) | (342) | View Plans | ||
| Verizon | (0) | (28) | (816) | View Plans | ||
| HughesNet | (0) | (1) |  (25) | View Plans | ||
| Viasat | (0) | (1) |  (12) | View Plans | ||
| XFINITY | (0) | (211) | (2379) | View Plans | ||
| EarthLink | (0) | (2) | (15) | View Plans | ||
| AT&T | (0) | (119) | (1051) | View Plans | ||
| Etheric Networks | (0) | (0) | (0) | View Plans | ||
| GeoLinks | (0) | (0) | (0) | View Plans | ||
| Sail Internet | (0) | (0) | (0) | View Plans |
Customer Ratings for Internet Provider Speeds in Foster City
Based on data reported by Foster City ISPs to the FCC, the fastest speeds in the city are available through AT&T and EarthLink. These internet providers offer speeds up to 5,000 Mbps in Foster City. Therefore, the average customer can get up to 3,234 Mbps if they’re willing to purchase the fastest subscription tier available at their homes.
However, actual customers rated their satisfaction with internet speed highest with T-Mobile Home Internet. This indicates T-Mobile Home Internet reliably delivers speeds expected by the customer based on the plan they are paying for.
| ISP / Tech Type | Foster City Speed | California Speed | National Speed | For Service | ||
|---|---|---|---|---|---|---|
| T-Mobile Home Internet | (0) | (27) | (342) | View Plans | ||
| XFINITY | (0) | (211) | (2379) | View Plans | ||
| Verizon | (0) | (28) | (816) | View Plans | ||
| HughesNet | (0) |  (1) | (25) | View Plans | ||
| Viasat | (0) |  (1) | (12) | View Plans | ||
| AT&T | (0) | (119) | (1051) | View Plans | ||
| EarthLink | (0) | (2) | (15) | View Plans | ||
| Etheric Networks | (0) | (0) | (0) | View Plans | ||
| GeoLinks | (0) | (0) | (0) | View Plans | ||
| Sail Internet | (0) | (0) | (0) | View Plans |
Who is the Cheapest Internet Provider in Foster City?
Of the providers in Foster City, customers rate T-Mobile Home Internet the best for price. Data comes from customers rating their satisfaction with pricing: in Foster City where enough of them have reviewed a provider, otherwise across California or the country. This feedback is valuable because it considers price changes and whether the speeds paid for are worth it.
T-Mobile Home Internet is rated 4.26 out of 5 for price, which is higher than the average across all internet providers in the country. Verizon is rated second for affordability, with an average price rating of 3.75 out of 5.
The table below shows how customers in Foster City, California, and the United States rated the affordability of their internet service.
Rated Affordability in Foster City
| ISP / Tech Type | Foster City Affordability | California Affordability | National Affordability | For Service | ||
|---|---|---|---|---|---|---|
| T-Mobile Home Internet | (0) |  (27) | (342) | View Plans | ||
| Verizon | (0) | (28) | (816) | View Plans | ||
| HughesNet | (0) | (1) | (25) | View Plans | ||
| Viasat | (0) | (1) | (12) | View Plans | ||
| EarthLink | (0) | (2) | (15) | View Plans | ||
| AT&T | (0) | (119) | (1051) | View Plans | ||
| XFINITY | (0) | (211) | (2379) | View Plans | ||
| Etheric Networks | (0) | (0) | (0) | View Plans | ||
| GeoLinks | (0) | (0) | (0) | View Plans | ||
| Sail Internet | (0) | (0) | (0) | View Plans |
Customer Reviews for Internet Service Providers in California
Customer Reviews
Steve
ting Fiber
November 13, 2026 Slow, 1/10th the speed they advertised
Robert
Verizon Fixed Wireless
November 10, 2026 Was cut off with .out notice due to upgrade and was not provided connection to upgrade from the same location (tower). Causing further problems in service and added cost.
ISPReports User
AT&T DSL
November 08, 2026 Lousy
ISPReports User
Fidium
November 08, 2026 Vernice
Frontier Fiber
November 01, 2026 Horrible this is horrible. My internet has been down for two days in a half. Never again
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Which ISP Should You Choose in Foster City?
The right ISP for you depends upon your needs, but in general we can make the following suggestions:
- The best all-around internet service provider in Foster City is T-Mobile Home Internet.
- The fastest internet provider should be AT&T and EarthLink. Considering speed for the money and reliability in speeds, T-Mobile Home Internet may be a better choice based on real-world local customer feedback.
- The most affordable internet provider in Foster City is T-Mobile Home Internet.
- XFINITY from Comcast, Viasat, and HughesNet has the broadest coverage in Foster City, available to 99.8% of homes, and is most likely to cover your home. To find out exactly what’s available at your home, please use our address search tool.