In Sonoma County there are 2 residential DSL providers covering 92.43% of the county. The average home can get speeds up to 74 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 DSL 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
DSL 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 DSL internet available?
DSL Internet Availability Key
DSL is available in 92.43% of Sonoma County. Areas in green have DSL 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 Sonoma County above to see who has service at your home.
How fast is DSL internet in Sonoma County?
The map below shows maximum DSL internet speeds by area in Sonoma County.
DSL Internet Speed Key
The average Sonoma County home can get up to 74 Mbps on their DSL internet plan. The fastest DSL download speed in the county is 200 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, 12.60% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in Sonoma County.
DSL internet speeds tend to be faster in the southeast parts of Sonoma County, and slower in the northwest areas of the county.
Is DSL 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 DSL 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.
DSL 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 DSL in Sonoma County, CA
EarthLink DSL coverage
About 92.13%, or 450,388 people, have EarthLink DSL internet available to them in the county. The company covers the entire Sonoma County area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in most of Sonoma County.
EarthLink DSL download speeds
EarthLink is below average when comparing download speeds to all other internet providers in Sonoma County. Versus other DSL providers in the area, EarthLink DSL is below average. There are 5 different maximum speeds throughout Sonoma County. The fastest plan anyone in Sonoma County can order from EarthLink goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for Sonoma County customers is up to 74 Mbps.
Show all download speeds
- 55.9% up to 100.0 Mbps
- 11.1% up to 75.0 Mbps
- 14.2% up to 50.0 Mbps
- 5.2% up to 25.0 Mbps
- 13.6% up to 10.0 Mbps
EarthLink DSL upload speeds
In Sonoma County download speeds tend to be faster than than upload speeds for EarthLink DSL. Compared to other ISPs, EarthLink is below average where upload speeds are concerned, and below average compared to other Sonoma County DSL providers. EarthLink 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 Sonoma County is up to 20 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, EarthLink customers can get speeds up to 15 Mbps.
Show all upload speeds
- 67.0% up to 20.0 Mbps
- 14.2% up to 10.0 Mbps
- 5.2% up to 5.0 Mbps
- 13.6% up to 1.0 Mbps
AT&T DSL in Sonoma County, CA
AT&T DSL coverage
About 92.13%, or 450,388 people, have AT&T DSL internet available to them in the county. The company covers the entire Sonoma County area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in most of Sonoma County.
AT&T DSL download speeds
AT&T is below average when comparing download speeds to all other internet providers in Sonoma County. Versus other DSL providers in the area, AT&T DSL is below average. There are 5 different maximum speeds throughout Sonoma County. The fastest plan anyone in Sonoma County can order from AT&T goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for Sonoma County customers is up to 74 Mbps.
Show all download speeds
- 55.9% up to 100.0 Mbps
- 11.1% up to 75.0 Mbps
- 14.2% up to 50.0 Mbps
- 5.2% up to 25.0 Mbps
- 13.6% up to 10.0 Mbps
AT&T DSL upload speeds
In Sonoma County download speeds tend to be faster than than upload speeds for AT&T DSL. Compared to other ISPs, AT&T is below average where upload speeds are concerned, and below average compared to other Sonoma County DSL providers. AT&T 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 Sonoma County is up to 20 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 15 Mbps.
Show all upload speeds
- 67.0% up to 20.0 Mbps
- 14.2% up to 10.0 Mbps
- 5.2% up to 5.0 Mbps
- 13.6% up to 1.0 Mbps
Sonoma County DSL 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 DSL internet in Sonoma County compare to the rest of California?
DSL internet speeds in Sonoma County are much faster versus the average speeds in California: 0.00 Mbps in California versus 74 Mbps in the county. The state has similar DSL availability compared to the county. Average DSL coverage in California is 0.00% versus 92.43% in Sonoma County.
What zip codes have DSL internet?
DSL 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 DSL 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: less DSL coverage, slower speeds
- Yolo County, CA: less DSL coverage, faster speeds
- Sacramento County, CA: less DSL coverage, slower speeds
- Amador County, CA: less DSL coverage, slower speeds
- Wayne County, UT: less DSL coverage, slower speeds
- Grand County, UT: less DSL coverage, slower speeds
- Montrose County, CO: less DSL coverage, slower speeds
- Fremont County, CO: less DSL coverage, slower speeds
- Kiowa County, CO: less DSL coverage, slower speeds
- Greeley County, KS: less DSL coverage, slower speeds
Counties with Similar Populations
- Spokane County, WA: less DSL coverage, slower speeds
- Greenville County, SC: less DSL coverage, slower speeds
- Guilford County, NC: less DSL coverage, slower speeds
- Hampden County, MA: less DSL coverage, slower speeds
- Hillsborough County, NH: less DSL coverage, slower speeds
- Jefferson County, CO: less DSL coverage, faster speeds
- Ramsey County, MN: less DSL coverage, faster speeds
- Santa Barbara County, CA: less DSL coverage, slower speeds
- Solano County, CA: less DSL coverage, faster speeds
- Adams County, CO: less DSL coverage, faster speeds