In Alameda County there are 3 residential DSL providers covering 83.72% of the county. The average home can get speeds up to 92 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 Alameda County, CA.
To see availability maps for all providers including fiber, cable, DSL, and more in Alameda County, CA please click below.
Alameda County, CA Availability Maps
DSL Internet Service Providers in Alameda 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 Alameda County are not shown.
Alameda 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 Alameda County is DSL internet available?
DSL Internet Availability Key
DSL is available in 83.72% of Alameda 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 Alameda County above to see who has service at your home.
How fast is DSL internet in Alameda County?
The map below shows maximum DSL internet speeds by area in Alameda County.
DSL Internet Speed Key
The average Alameda County home can get up to 92 Mbps on their DSL internet plan. The fastest DSL download speed in the county is 1,000 Mbps, which 1.18% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 4.80% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in Alameda County.
DSL internet speeds tend to be faster in the southeast parts of Alameda County, and slower in the north areas of the county.
Is DSL the fastest internet I can get in Alameda County?
The fastest internet for you may vary based on where in Alameda County you live. In general, fiber competes most often with DSL in the county.
- Fiber is the fastest internet type for 63.22% of Alameda County homes.
- Cable is fastest for 35.08% 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 1.42% of Alameda County homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Alameda County, along with details on where in Alameda County and at what speeds.
AT&T DSL in Alameda County, CA
AT&T DSL coverage
About 83.60%, or 1,406,392 people, have AT&T DSL internet available to them in the county. The company covers the northwest, southeast, central, south, east, west, and north Alameda 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 Alameda County.
AT&T DSL download speeds
AT&T is below average when comparing download speeds to all other internet providers in Alameda County. Versus other DSL providers in the area, AT&T DSL is one of the slowest. There are 5 different maximum speeds throughout Alameda County. The fastest plan anyone in Alameda 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 Alameda County customers is up to 79 Mbps.
Show all download speeds
- 58.5% up to 100.0 Mbps
- 12.4% up to 75.0 Mbps
- 17.7% up to 50.0 Mbps
- 5.4% up to 25.0 Mbps
- 5.9% up to 10.0 Mbps
AT&T DSL upload speeds
In Alameda 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 slowest compared to other Alameda 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 Alameda 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 16 Mbps.
Show all upload speeds
- 70.9% up to 20.0 Mbps
- 17.7% up to 10.0 Mbps
- 5.4% up to 5.0 Mbps
- 5.9% up to 1.0 Mbps
EarthLink DSL in Alameda County, CA
EarthLink DSL coverage
About 83.60%, or 1,406,392 people, have EarthLink DSL internet available to them in the county. The company covers the northwest, southeast, central, south, east, west, and north Alameda County area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in much of Alameda County.
EarthLink DSL download speeds
EarthLink is below average when comparing download speeds to all other internet providers in Alameda County. Versus other DSL providers in the area, EarthLink DSL is one of the slowest. There are 5 different maximum speeds throughout Alameda County. The fastest plan anyone in Alameda 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 Alameda County customers is up to 79 Mbps.
Show all download speeds
- 58.5% up to 100.0 Mbps
- 12.4% up to 75.0 Mbps
- 17.7% up to 50.0 Mbps
- 5.4% up to 25.0 Mbps
- 5.9% up to 10.0 Mbps
EarthLink DSL upload speeds
In Alameda 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 slowest compared to other Alameda 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 Alameda 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 16 Mbps.
Show all upload speeds
- 70.9% up to 20.0 Mbps
- 17.7% up to 10.0 Mbps
- 5.4% up to 5.0 Mbps
- 5.9% up to 1.0 Mbps
Sail Internet DSL in Alameda County, CA
Sail Internet DSL coverage
About 1.76%, or 29,579 people, have Sail Internet DSL internet available to them in the county. The company covers the southeast, northwest, east, and south Alameda County area. Sail Internet is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Alameda County.
Sail Internet DSL download speeds
Sail Internet is below average when comparing download speeds to all other internet providers in Alameda County. Versus other DSL providers in the area, Sail Internet DSL is the fastest. There are 3 different maximum speeds throughout Alameda County. The fastest plan anyone in Alameda County can order from Sail Internet goes up to 1,000 Mbps, the slowest package only goes up to 200 Mbps, and the county-wide average maximum speed for Alameda County customers is up to 741 Mbps.
Show all download speeds
- 67.1% up to 1,000.0 Mbps
- 4.7% up to 300.0 Mbps
- 28.3% up to 200.0 Mbps
Sail Internet DSL upload speeds
In Alameda County download speeds tend to be faster than than upload speeds for Sail Internet DSL. Compared to other ISPs, Sail Internet is below average where upload speeds are concerned, and the fastest compared to other Alameda County DSL providers. Sail Internet 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 Alameda County is up to 1,000 Mbps. Some customers have slower plan choices, which only go up to 100 Mbps. On average, Sail Internet customers can get speeds up to 708 Mbps.
Show all upload speeds
- 67.1% up to 1,000.0 Mbps
- 4.7% up to 200.0 Mbps
- 28.3% up to 100.0 Mbps
Alameda County DSL by Area
This information is most helpful to those looking for homes or considering moving to Alameda County or any of the areas nearby.
How does DSL internet in Alameda County compare to the rest of California?
DSL internet speeds in Alameda County are much faster versus the average speeds in California: 0.00 Mbps in California versus 92 Mbps in the county. The state has similar DSL availability compared to the county. Average DSL coverage in California is 0.00% versus 83.72% in Alameda County.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Alameda 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
- San Francisco County, CA: more DSL coverage, slower speeds
- Stanislaus County, CA: more DSL coverage, slower speeds
- Mono County, CA: more DSL coverage, slower speeds
- Esmeralda County, NV: less DSL coverage, slower speeds
- Lincoln County, NV: less DSL coverage, slower speeds
- Iron County, UT: more DSL coverage, slower speeds
- Garfield County, UT: less DSL coverage, slower speeds
- Dolores County, CO: more DSL coverage, slower speeds
- San Juan County, CO: more DSL coverage, slower speeds
- Mineral County, CO: more DSL coverage, slower speeds
Counties with Similar Populations
- Santa Clara County, CA: less DSL coverage, faster speeds
- Riverside County, CA: less DSL coverage, slower speeds
- San Bernardino County, CA: less DSL coverage, slower speeds
- Pima County, AZ: more DSL coverage, slower speeds
- Travis County, TX: less DSL coverage, slower speeds
- Sacramento County, CA: less DSL coverage, slower speeds
- Contra Costa County, CA: less DSL coverage, faster speeds
- Clark County, NV: more DSL coverage, slower speeds
- Broward County, FL: more DSL coverage, slower speeds
- Honolulu County, HI: less DSL coverage, slower speeds