In Sonoma County there are 3 residential Fiber providers covering 36.12% of the county. The average home can get speeds up to 7,393 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 Sonoma County, CA.
To see availability maps for all providers including fiber, cable, DSL, and more in Sonoma County, CA please click below.
Sonoma County, CA Availability Maps
Fiber Internet Service Providers in Sonoma 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 Sonoma County are not shown.
Sonoma 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 Sonoma County is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 36.12% of Sonoma County. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is Sonic. Call one of the companies with service in Sonoma County above to see who has service at your home.
How fast is fiber internet in Sonoma County?
The map below shows maximum fiber internet speeds by area in Sonoma County.
Fiber Internet Speed Key
The average Sonoma County home can get up to 7,393 Mbps on their fiber internet plan. The fastest fiber download speed in the county is 10,000 Mbps, which 20.80% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 4.34% of homes can only purchase plans up to 1,000 Mbps. See the internet provider details below for info about their speed and coverage in Sonoma County.
Fiber internet speeds tend to be faster in the east parts of Sonoma County, and slower in the west areas of the county.
Is fiber the fastest internet I can get in Sonoma County?
The fastest internet for you may vary based on where in Sonoma County you live. In general, cable competes most often with fiber in the county.
- Fiber is the fastest internet type for 32.22% of Sonoma County homes.
- Cable is fastest for 64.53% of the county.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 1.88%.
- Satellite internet may be the only option for 1.13% of Sonoma County homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in Sonoma County, along with details on where in Sonoma County and at what speeds.
EarthLink Fiber in Sonoma County, CA
EarthLink fiber coverage
About 26.19%, or 128,028 people, have EarthLink fiber internet available to them in the county. The company covers the central, southeast, north, south, east, northwest, and northeast Sonoma County area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of Sonoma County.
EarthLink fiber download speeds
EarthLink is above average when comparing download speeds to all other internet providers in Sonoma County. Versus other fiber providers in the area, EarthLink fiber is above average. There are 2 different maximum speeds throughout Sonoma County. The fastest plan anyone in Sonoma County can order from EarthLink goes up to 5,000 Mbps, the slowest package only goes up to 1,000 Mbps, and the county-wide average maximum speed for Sonoma County customers is up to 4,450 Mbps.
Show all download speeds
- 86.3% up to 5,000.0 Mbps
- 13.7% up to 1,000.0 Mbps
EarthLink fiber upload speeds
In Sonoma County download speeds tend to be equal to than upload speeds for EarthLink fiber. Compared to other ISPs, EarthLink is above average where upload speeds are concerned, and above average compared to other Sonoma County fiber providers. EarthLink offers 2 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 Sonoma County is up to 5,000 Mbps. Some customers have slower plan choices, which only go up to 1,000 Mbps. On average, EarthLink customers can get speeds up to 4,450 Mbps.
Show all upload speeds
- 86.3% up to 5,000.0 Mbps
- 13.7% up to 1,000.0 Mbps
AT&T Fiber in Sonoma County, CA
AT&T fiber coverage
About 26.19%, or 128,028 people, have AT&T fiber internet available to them in the county. The company covers the central, southeast, north, south, east, northwest, and northeast Sonoma County area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of Sonoma County.
AT&T fiber download speeds
AT&T is above average when comparing download speeds to all other internet providers in Sonoma County. Versus other fiber providers in the area, AT&T fiber is above average. There are 2 different maximum speeds throughout Sonoma County. The fastest plan anyone in Sonoma County can order from AT&T goes up to 5,000 Mbps, the slowest package only goes up to 1,000 Mbps, and the county-wide average maximum speed for Sonoma County customers is up to 4,450 Mbps.
Show all download speeds
- 86.3% up to 5,000.0 Mbps
- 13.7% up to 1,000.0 Mbps
AT&T fiber upload speeds
In Sonoma County download speeds tend to be equal to than upload speeds for AT&T fiber. Compared to other ISPs, AT&T is above average where upload speeds are concerned, and above average compared to other Sonoma County fiber providers. AT&T offers 2 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 Sonoma County is up to 5,000 Mbps. Some customers have slower plan choices, which only go up to 1,000 Mbps. On average, AT&T customers can get speeds up to 4,450 Mbps.
Show all upload speeds
- 86.3% up to 5,000.0 Mbps
- 13.7% up to 1,000.0 Mbps
Sonic Fiber in Sonoma County, CA
Sonic fiber coverage
About 22.07%, or 107,890 people, have Sonic fiber internet available to them in the county. The company covers the central, southeast, east, northwest, west, and south Sonoma County area. Sonic is a large internet service provider internet service providers in the US, with internet service available in a small portion of Sonoma County.
Sonic fiber download speeds
Sonic is the fastest when comparing download speeds to all other internet providers in Sonoma County. Versus other fiber providers in the area, Sonic fiber is the fastest. There are 2 different maximum speeds throughout Sonoma County. The fastest plan anyone in Sonoma County can order from Sonic goes up to 10,000 Mbps, the slowest package only goes up to 1,000 Mbps, and the county-wide average maximum speed for Sonoma County customers is up to 9,483 Mbps.
Show all download speeds
- 94.3% up to 10,000.0 Mbps
- 5.7% up to 1,000.0 Mbps
Sonic fiber upload speeds
In Sonoma County download speeds tend to be equal to than upload speeds for Sonic fiber. Compared to other ISPs, Sonic is the fastest where upload speeds are concerned, and the fastest compared to other Sonoma County fiber providers. Sonic offers 2 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 Sonoma County is up to 10,000 Mbps. Some customers have slower plan choices, which only go up to 1,000 Mbps. On average, Sonic customers can get speeds up to 9,483 Mbps.
Show all upload speeds
- 94.3% up to 10,000.0 Mbps
- 5.7% up to 1,000.0 Mbps
Sonoma County Fiber by Area
This information is most helpful to those looking for homes or considering moving to Sonoma County or any of the areas nearby.
How does fiber internet in Sonoma County compare to the rest of California?
Fiber internet speeds in Sonoma County are much faster versus the average speeds in California: 0.00 Mbps in California versus 7,393 Mbps in the county. The state has similar fiber availability compared to the county. Average fiber coverage in California is 0.00% versus 36.12% in Sonoma County.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around Sonoma 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
- Napa County, CA: more fiber coverage, slower speeds
- Yolo County, CA: more fiber coverage, slower speeds
- Sacramento County, CA: more fiber coverage, slower speeds
- Amador County, CA: more fiber coverage, slower speeds
- Wayne County, UT: more fiber coverage, slower speeds
- Grand County, UT: more fiber coverage, slower speeds
- Montrose County, CO: more fiber coverage, slower speeds
- Fremont County, CO: less fiber coverage, slower speeds
- Kiowa County, CO: more fiber coverage, slower speeds
- Wichita County, KS: less fiber coverage, slower speeds
Counties with Similar Populations
- Spokane County, WA: more fiber coverage, slower speeds
- Greenville County, SC: more fiber coverage, slower speeds
- Guilford County, NC: more fiber coverage, slower speeds
- Hampden County, MA: less fiber coverage, slower speeds
- Hillsborough County, NH: more fiber coverage, slower speeds
- Jefferson County, CO: more fiber coverage, slower speeds
- Ramsey County, MN: more fiber coverage, slower speeds
- Richmond County, NY: more fiber coverage, slower speeds
- Santa Barbara County, CA: more fiber coverage, slower speeds
- Solano County, CA: more fiber coverage, slower speeds