In San Dimas there are 3 residential DSL providers covering 6.33% of the city. The average home can get speeds up to 15 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 San Dimas, CA.
To see availability maps for all providers including fiber, cable, DSL, and more in San Dimas, CA please click below.
San Dimas, CA Availability Maps
DSL Internet Service Providers in San Dimas
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 San Dimas are not shown.
San Dimas 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 San Dimas is DSL internet available?
DSL Internet Availability Key
DSL is available in 6.33% of San Dimas. 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 San Dimas above to see who has service at your home.
How fast is DSL internet in San Dimas?
The map below shows maximum DSL internet speeds by area in San Dimas.
DSL Internet Speed Key
The average San Dimas home can get up to 15 Mbps on their DSL internet plan. The fastest DSL download speed in the city is 50 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, 4.88% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in San Dimas.
DSL internet speeds tend to be faster in the north parts of San Dimas, and slower in the south areas of the city.
Is DSL the fastest internet I can get in San Dimas?
The fastest internet for you may vary based on where in San Dimas you live. In general, fiber competes most often with DSL in the city.
- Fiber is the fastest internet type for 76.38% of San Dimas homes.
- Cable is fastest for 16.28% of the city.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for less than 1%.
- Satellite internet may be the only option for 7.21% of San Dimas homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in San Dimas, along with details on where in San Dimas and at what speeds.
Frontier Communications DSL in San Dimas, CA
Frontier DSL coverage
About 4.88%, or 1,843 people, have Frontier DSL internet available to them in the city. The company covers the south, southwest, and west San Dimas 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 San Dimas.
Frontier Communications DSL download speeds
Frontier is the slowest when comparing download speeds to all other internet providers in San Dimas. Versus other DSL providers in the area, Frontier DSL is the slowest. There are no different maximum speeds throughout San Dimas. The fastest plan anyone in San Dimas can order from Frontier goes up to 10 Mbps, and all San Dimas customers can get this speed.
Show all download speeds
- 100.0% up to 10.0 Mbps
Frontier Communications DSL upload speeds
In San Dimas 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 San Dimas DSL providers. Frontier offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in San Dimas is up to 1.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1.0 Mbps
AT&T DSL in San Dimas, CA
AT&T DSL coverage
About 1.45%, or 549 people, have AT&T DSL internet available to them in the city. The company covers the northeast, north, and central San Dimas area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of San Dimas.
AT&T DSL download speeds
AT&T is below average when comparing download speeds to all other internet providers in San Dimas. Versus other DSL providers in the area, AT&T DSL is one of the fastest. There are 2 different maximum speeds throughout San Dimas. The fastest plan anyone in San Dimas can order from AT&T goes up to 50 Mbps, the slowest package only goes up to 25 Mbps, and the city-wide average maximum speed for San Dimas customers is up to 34 Mbps.
Show all download speeds
- 34.8% up to 50.0 Mbps
- 65.2% up to 25.0 Mbps
AT&T DSL upload speeds
In San Dimas 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 San Dimas DSL providers. AT&T offers 2 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in San Dimas is up to 10 Mbps. Some customers have slower plan choices, which only go up to 5.0 Mbps. On average, AT&T customers can get speeds up to 6.7 Mbps.
Show all upload speeds
- 34.8% up to 10.0 Mbps
- 65.2% up to 5.0 Mbps
EarthLink DSL in San Dimas, CA
EarthLink DSL coverage
About 1.45%, or 549 people, have EarthLink DSL internet available to them in the city. The company covers the northeast, north, and central San Dimas area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of San Dimas.
EarthLink DSL download speeds
EarthLink is below average when comparing download speeds to all other internet providers in San Dimas. Versus other DSL providers in the area, EarthLink DSL is one of the fastest. There are 2 different maximum speeds throughout San Dimas. The fastest plan anyone in San Dimas can order from EarthLink goes up to 50 Mbps, the slowest package only goes up to 25 Mbps, and the city-wide average maximum speed for San Dimas customers is up to 34 Mbps.
Show all download speeds
- 34.8% up to 50.0 Mbps
- 65.2% up to 25.0 Mbps
EarthLink DSL upload speeds
In San Dimas 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 San Dimas DSL providers. EarthLink offers 2 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in San Dimas is up to 10 Mbps. Some customers have slower plan choices, which only go up to 5.0 Mbps. On average, EarthLink customers can get speeds up to 6.7 Mbps.
Show all upload speeds
- 34.8% up to 10.0 Mbps
- 65.2% up to 5.0 Mbps
San Dimas DSL by Area
This information is most helpful to those looking for homes or considering moving to San Dimas or any of the areas nearby.
How does DSL internet in San Dimas compare to the rest of California?
DSL internet speeds in San Dimas are much faster versus the average speeds in California: 0.00 Mbps in California versus 15 Mbps in the city. The state has similar DSL availability compared to the city. Average DSL coverage in California is 0.00% versus 6.33% in San Dimas.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around San Dimas 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 cities?
Below are cities nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Cities
- La Verne, CA: less DSL coverage, slower speeds
- Glendora, CA: less DSL coverage, faster speeds
- Covina, CA: more DSL coverage, slower speeds
- Citrus, CA: more DSL coverage, slower speeds
- Pomona, CA: more DSL coverage, slower speeds
- Azusa, CA: more DSL coverage, slower speeds
- Walnut, CA: more DSL coverage, slower speeds
- Claremont, CA: more DSL coverage, faster speeds
- Vincent, CA: less DSL coverage, slower speeds
- West Covina, CA: more DSL coverage, slower speeds
Cities with Similar Populations
- Las Piedras, PR: more DSL coverage, slower speeds
- Saratoga Springs, UT: more DSL coverage, faster speeds
- Sahuarita, AZ: more DSL coverage, faster speeds
- Roy, UT: more DSL coverage, faster speeds
- Manitowoc, WI: more DSL coverage, faster speeds
- Lewiston, ME: more DSL coverage, faster speeds
- Lauderdale Lakes, FL: more DSL coverage, faster speeds
- Lake Orion, MI: more DSL coverage, faster speeds
- La Quinta, CA: less DSL coverage, faster speeds
- Kendall West, FL: more DSL coverage, faster speeds