In Marin County there are 3 residential DSL providers covering 80.81% of the county. The average home can get speeds up to 66 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 Marin County, CA.
To see availability maps for all providers including fiber, cable, DSL, and more in Marin County, CA please click below.
Marin County, CA Availability Maps
DSL Internet Service Providers in Marin 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 Marin County are not shown.
Marin 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 Marin County is DSL internet available?
DSL Internet Availability Key
DSL is available in 80.81% of Marin 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 Marin County above to see who has service at your home.
How fast is DSL internet in Marin County?
The map below shows maximum DSL internet speeds by area in Marin County.
DSL Internet Speed Key
The average Marin County home can get up to 66 Mbps on their DSL internet plan. The fastest DSL download speed in the county is 100 Mbps, which 40.48% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 20.04% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in Marin County.
DSL internet speeds tend to be faster in the east parts of Marin County, and slower in the southwest areas of the county.
Is DSL the fastest internet I can get in Marin County?
The fastest internet for you may vary based on where in Marin County you live. In general, fiber competes most often with DSL in the county.
- Fiber is the fastest internet type for 53.76% of Marin County homes.
- Cable is fastest for 44.46% 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 less than 1% of Marin County homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Marin County, along with details on where in Marin County and at what speeds.
EarthLink DSL in Marin County, CA
EarthLink DSL coverage
About 78.57%, or 206,109 people, have EarthLink DSL internet available to them in the county. The company covers the entire Marin County area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in much of Marin County.
EarthLink DSL download speeds
EarthLink is below average when comparing download speeds to all other internet providers in Marin County. Versus other DSL providers in the area, EarthLink DSL is one of the fastest. There are 5 different maximum speeds throughout Marin County. The fastest plan anyone in Marin 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 Marin County customers is up to 68 Mbps.
Show all download speeds
- 51.5% up to 100.0 Mbps
- 7.9% up to 75.0 Mbps
- 13.7% up to 50.0 Mbps
- 4.3% up to 25.0 Mbps
- 22.7% up to 10.0 Mbps
EarthLink DSL upload speeds
In Marin 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 one of the fastest compared to other Marin 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 Marin 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 14 Mbps.
Show all upload speeds
- 59.4% up to 20.0 Mbps
- 13.7% up to 10.0 Mbps
- 4.3% up to 5.0 Mbps
- 22.7% up to 1.0 Mbps
AT&T DSL in Marin County, CA
AT&T DSL coverage
About 78.57%, or 206,109 people, have AT&T DSL internet available to them in the county. The company covers the entire Marin County area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in much of Marin County.
AT&T DSL download speeds
AT&T is below average when comparing download speeds to all other internet providers in Marin County. Versus other DSL providers in the area, AT&T DSL is one of the fastest. There are 5 different maximum speeds throughout Marin County. The fastest plan anyone in Marin 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 Marin County customers is up to 68 Mbps.
Show all download speeds
- 51.5% up to 100.0 Mbps
- 7.9% up to 75.0 Mbps
- 13.7% up to 50.0 Mbps
- 4.3% up to 25.0 Mbps
- 22.7% up to 10.0 Mbps
AT&T DSL upload speeds
In Marin 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 one of the fastest compared to other Marin 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 Marin 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 14 Mbps.
Show all upload speeds
- 59.4% up to 20.0 Mbps
- 13.7% up to 10.0 Mbps
- 4.3% up to 5.0 Mbps
- 22.7% up to 1.0 Mbps
Frontier Communications DSL in Marin County, CA
Frontier DSL coverage
About 4.67%, or 12,261 people, have Frontier DSL internet available to them in the county. The company covers the northwest and north Marin 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 Marin County.
Frontier Communications DSL download speeds
Frontier is the slowest when comparing download speeds to all other internet providers in Marin County. Versus other DSL providers in the area, Frontier DSL is the slowest. There are 4 different maximum speeds throughout Marin County. The fastest plan anyone in Marin County can order from Frontier goes up to 90 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for Marin County customers is up to 17 Mbps.
Show all download speeds
- 0.7% up to 90.0 Mbps
- 7.8% up to 70.0 Mbps
- 4.4% up to 45.0 Mbps
- 87.1% up to 10.0 Mbps
Frontier Communications DSL upload speeds
In Marin County download speeds tend to be faster than than upload speeds for Frontier DSL. Compared to other ISPs, Frontier is the slowest where upload speeds are concerned, and the slowest compared to other Marin County DSL providers. Frontier 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 Marin County is up to 8.0 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Frontier customers can get speeds up to 1.3 Mbps.
Show all upload speeds
- 0.2% up to 8.0 Mbps
- 0.5% up to 5.0 Mbps
- 12.2% up to 3.0 Mbps
- 87.1% up to 1.0 Mbps
Marin County DSL by Area
This information is most helpful to those looking for homes or considering moving to Marin County or any of the areas nearby.
How does DSL internet in Marin County compare to the rest of California?
DSL internet speeds in Marin County are much faster versus the average speeds in California: 0.00 Mbps in California versus 66 Mbps in the county. The state has similar DSL availability compared to the county. Average DSL coverage in California is 0.00% versus 80.81% in Marin County.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Marin 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
- Contra Costa County, CA: more DSL coverage, faster speeds
- San Joaquin County, CA: less DSL coverage, faster speeds
- Tuolumne County, CA: less DSL coverage, slower speeds
- San Miguel County, CO: more DSL coverage, slower speeds
- San Juan County, CO: more DSL coverage, slower speeds
- Hinsdale County, CO: more DSL coverage, slower speeds
- Saguache County, CO: more DSL coverage, slower speeds
- Otero County, CO: more DSL coverage, slower speeds
- Bent County, CO: more DSL coverage, slower speeds
- Prowers County, CO: more DSL coverage, slower speeds
Counties with Similar Populations
- Yuma County, AZ: less DSL coverage, slower speeds
- Harrison County, MS: more DSL coverage, slower speeds
- Hawaii County, HI: less DSL coverage, slower speeds
- Clay County, FL: less DSL coverage, faster speeds
- Hays County, TX: less DSL coverage, slower speeds
- Clermont County, OH: less DSL coverage, slower speeds
- St. Joseph County, IN: less DSL coverage, slower speeds
- St. Louis County, MN: more DSL coverage, slower speeds
- Hall County, GA: less DSL coverage, slower speeds
- Boulder County, CO: more DSL coverage, faster speeds