In Santa Clara County there are 5 residential Fiber providers covering 55.36% of the county. The average home can get speeds up to 5,463 Mbps. Note that we may have a financial relationship with some of the providers below. This does not influence rankings, and helps us provide high-quality detailed information for free.
This page contains all Fiber internet providers in Santa Clara County, CA.
To see availability maps for all providers including fiber, cable, DSL, and more in Santa Clara County, CA please click below.
Santa Clara County, CA Availability Maps
Fiber Internet Service Providers in Santa Clara County
Data updated 11/14/2025, based on FCC data from 12/31/2024. This is the most current data available as of .
To avoid wasting your time, providers with less than 1% coverage in Santa Clara County are not shown.
Santa Clara County Satellite TV & Internet Providers
DISH Satellite TV
DIRECTV Satellite TV
Not sure whether to choose Dish or DIRECTV? For most people most of the time we recommend DISH. But click here to learn more.
Viasat Satellite Internet
Where in Santa Clara County is fiber internet available?
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Fiber is available in 55.36% of Santa Clara County. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is AT&T. Call one of the companies with service in Santa Clara County above to see who has service at your home.
How fast is fiber internet in Santa Clara County?
The map below shows maximum fiber internet speeds by area in Santa Clara County.
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The average Santa Clara County home can get up to 5,463 Mbps on their fiber internet plan. The fastest fiber download speed in the county is 25,000 Mbps, which less than 1% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, less than 1% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in Santa Clara County.
Fiber internet speeds tend to be faster in the northeast parts of Santa Clara County, and slower in the northwest areas of the county.
Is fiber the fastest internet I can get in Santa Clara County?
The fastest internet for you may vary based on where in Santa Clara County you live. In general, cable competes most often with fiber in the county.
- Fiber is the fastest internet type for 50.40% of Santa Clara County homes.
- Cable is fastest for 47.13% of the county.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for less than 1%.
- Satellite internet may be the only option for 1.75% of Santa Clara County homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in Santa Clara County, along with details on where in Santa Clara County and at what speeds.
EarthLink Fiber in Santa Clara County, CA
EarthLink fiber coverage
About 48.77%, or 944,266 people, have EarthLink fiber internet available to them in the county. The company covers the entire Santa Clara County area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in some of Santa Clara County.
EarthLink fiber download speeds
EarthLink is above average when comparing download speeds to all other internet providers in Santa Clara County. Versus other fiber providers in the area, EarthLink fiber is below average. There are 3 different maximum speeds throughout Santa Clara County. The fastest plan anyone in Santa Clara County can order from EarthLink goes up to 5,000 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for Santa Clara County customers is up to 4,556 Mbps.
Show all download speeds
- 88.9% up to 5,000.0 Mbps
- 11.0% up to 1,000.0 Mbps
- 0.0% up to 10.0 Mbps
EarthLink fiber upload speeds
In Santa Clara County download speeds tend to be faster than than upload speeds for EarthLink fiber. Compared to other ISPs, EarthLink is above average where upload speeds are concerned, and below average compared to other Santa Clara County fiber providers. EarthLink offers 3 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Santa Clara County is up to 5,000 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, EarthLink customers can get speeds up to 4,556 Mbps.
Show all upload speeds
- 88.9% up to 5,000.0 Mbps
- 11.0% up to 1,000.0 Mbps
- 0.0% up to 1.0 Mbps
AT&T Fiber in Santa Clara County, CA
AT&T fiber coverage
About 48.77%, or 944,266 people, have AT&T fiber internet available to them in the county. The company covers the entire Santa Clara County area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in some of Santa Clara County.
AT&T fiber download speeds
AT&T is above average when comparing download speeds to all other internet providers in Santa Clara County. Versus other fiber providers in the area, AT&T fiber is below average. There are 3 different maximum speeds throughout Santa Clara County. The fastest plan anyone in Santa Clara County can order from AT&T goes up to 5,000 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for Santa Clara County customers is up to 4,556 Mbps.
Show all download speeds
- 88.9% up to 5,000.0 Mbps
- 11.0% up to 1,000.0 Mbps
- 0.0% up to 10.0 Mbps
AT&T fiber upload speeds
In Santa Clara County download speeds tend to be faster than than upload speeds for AT&T fiber. Compared to other ISPs, AT&T is above average where upload speeds are concerned, and below average compared to other Santa Clara County fiber providers. AT&T offers 3 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Santa Clara County is up to 5,000 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, AT&T customers can get speeds up to 4,556 Mbps.
Show all upload speeds
- 88.9% up to 5,000.0 Mbps
- 11.0% up to 1,000.0 Mbps
- 0.0% up to 1.0 Mbps
Sonic Fiber in Santa Clara County, CA
Sonic fiber coverage
About 7.13%, or 138,028 people, have Sonic fiber internet available to them in the county. The company covers the central, east, northeast, and north Santa Clara County area. Sonic is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Santa Clara County.
Sonic fiber download speeds
Sonic is above average when comparing download speeds to all other internet providers in Santa Clara County. Versus other fiber providers in the area, Sonic fiber is above average. There are no different maximum speeds throughout Santa Clara County. The fastest plan anyone in Santa Clara County can order from Sonic goes up to 10,000 Mbps, and all Santa Clara County customers can get this speed.
Show all download speeds
- 100.0% up to 10,000.0 Mbps
Sonic fiber upload speeds
In Santa Clara County download speeds tend to be equal to than upload speeds for Sonic fiber. Compared to other ISPs, Sonic is above average where upload speeds are concerned, and above average compared to other Santa Clara County fiber providers. Sonic offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Santa Clara County is up to 10,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 10,000.0 Mbps
Frontier Communications Fiber in Santa Clara County, CA
Frontier fiber coverage
About 5.62%, or 108,785 people, have Frontier fiber internet available to them in the county. The company covers the southeast, south, and southwest Santa Clara County area. Frontier is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Santa Clara County.
Frontier Communications fiber download speeds
Frontier is above average when comparing download speeds to all other internet providers in Santa Clara County. Versus other fiber providers in the area, Frontier fiber is above average. There are no different maximum speeds throughout Santa Clara County. The fastest plan anyone in Santa Clara County can order from Frontier goes up to 7,000 Mbps, and all Santa Clara County customers can get this speed.
Show all download speeds
- 100.0% up to 7,000.0 Mbps
Frontier Communications fiber upload speeds
In Santa Clara County download speeds tend to be equal to than upload speeds for Frontier fiber. Compared to other ISPs, Frontier is above average where upload speeds are concerned, and above average compared to other Santa Clara County fiber providers. Frontier offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Santa Clara County is up to 7,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 7,000.0 Mbps
XFINITY from Comcast Fiber in Santa Clara County, CA
XFINITY fiber coverage
About 1.66%, or 32,232 people, have XFINITY fiber internet available to them in the county. The company covers the north, northwest, central, southeast, south, east, and west Santa Clara County area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Santa Clara County.
XFINITY from Comcast fiber download speeds
XFINITY is below average when comparing download speeds to all other internet providers in Santa Clara County. Versus other fiber providers in the area, XFINITY fiber is below average. There are 3 different maximum speeds throughout Santa Clara County. The fastest plan anyone in Santa Clara County can order from XFINITY goes up to 2,000 Mbps, the slowest package only goes up to 1,000 Mbps, and the county-wide average maximum speed for Santa Clara County customers is up to 1,463 Mbps.
Show all download speeds
- 34.0% up to 2,000.0 Mbps
- 61.5% up to 1,200.0 Mbps
- 4.4% up to 1,000.0 Mbps
XFINITY from Comcast fiber upload speeds
In Santa Clara County download speeds tend to be faster than than upload speeds for XFINITY fiber. Compared to other ISPs, XFINITY is below average where upload speeds are concerned, and the slowest compared to other Santa Clara County fiber providers. XFINITY offers 4 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Santa Clara County is up to 2,000 Mbps. Some customers have slower plan choices, which only go up to 35 Mbps. On average, XFINITY customers can get speeds up to 332 Mbps.
Show all upload speeds
- 5.9% up to 2,000.0 Mbps
- 13.5% up to 1,000.0 Mbps
- 23.9% up to 250.0 Mbps
- 56.7% up to 35.0 Mbps
Santa Clara County Fiber by Area
This information is most helpful to those looking for homes or considering moving to Santa Clara County or any of the areas nearby.
How does fiber internet in Santa Clara County compare to the rest of California?
Fiber internet speeds in Santa Clara County are much faster versus the average speeds in California: 0.00 Mbps in California versus 5,463 Mbps in the county. The state has similar fiber availability compared to the county. Average fiber coverage in California is 0.00% versus 55.36% in Santa Clara County.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around Santa Clara County are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does fiber internet look like in other counties?
Below are counties nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Counties
- Merced County, CA: less fiber coverage, slower speeds
- Montezuma County, CO: less fiber coverage, slower speeds
- La Plata County, CO: less fiber coverage, slower speeds
- Archuleta County, CO: less fiber coverage, slower speeds
- Alamosa County, CO: more fiber coverage, slower speeds
- Costilla County, CO: more fiber coverage, slower speeds
- Baca County, CO: more fiber coverage, slower speeds
- Haskell County, KS: more fiber coverage, slower speeds
- Meade County, KS: more fiber coverage, slower speeds
- Clark County, KS: more fiber coverage, slower speeds
Counties with Similar Populations
- Miami-Dade County, FL: more fiber coverage, slower speeds
- Kings County, NY: more fiber coverage, faster speeds
- Dallas County, TX: more fiber coverage, slower speeds
- Riverside County, CA: more fiber coverage, faster speeds
- Gwinnett County, GA: more fiber coverage, slower speeds
- Allegheny County, PA: more fiber coverage, slower speeds
- Hennepin County, MN: more fiber coverage, faster speeds
- Hillsborough County, FL: more fiber coverage, faster speeds
- Honolulu County, HI: more fiber coverage, slower speeds
- King County, WA: more fiber coverage, slower speeds