In San Carlos there are 2 residential DSL providers covering 88.25% of the neighborhood. The average home can get speeds up to 95 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 Carlos, San Diego, CA.
To see availability maps for all providers including fiber, cable, DSL, and more in San Carlos, San Diego, CA please click below.
San Carlos, San Diego, CA Availability Maps
DSL Internet Service Providers in San Carlos
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 Carlos are not shown.
San Carlos 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 Carlos is DSL internet available?
DSL Internet Availability Key
DSL is available in 88.25% of San Carlos. 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 Carlos above to see who has service at your home.
How fast is DSL internet in San Carlos?
The map below shows maximum DSL internet speeds by area in San Carlos.
DSL Internet Speed Key
The average San Carlos home can get up to 95 Mbps on their DSL internet plan. The fastest DSL download speed in the neighborhood is 100 Mbps, which 76.65% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, less than 1% of homes can only purchase plans up to 25 Mbps. See the internet provider details below for info about their speed and coverage in San Carlos.
DSL internet speeds tend to be faster in the southwest parts of San Carlos, and slower in the south areas of the neighborhood.
Is DSL the fastest internet I can get in San Carlos?
The fastest internet for you may vary based on where in San Carlos you live. In general, cable competes most often with DSL in the neighborhood.
- Fiber is the fastest internet type for 21.51% of San Carlos homes.
- Cable is fastest for 78.49% of the neighborhood.
- 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 San Carlos homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in San Carlos, along with details on where in San Carlos and at what speeds.
EarthLink DSL in San Carlos, San Diego, CA
EarthLink DSL coverage
About 88.25%, or 13,899 people, have EarthLink DSL internet available to them in the neighborhood. The company covers the entire San Carlos area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in most of San Carlos.
EarthLink DSL download speeds
EarthLink is below average when comparing download speeds to all other internet providers in San Carlos. Versus other DSL providers in the area, EarthLink DSL is one of the fastest. There are 4 different maximum speeds throughout San Carlos. The fastest plan anyone in San Carlos can order from EarthLink goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the neighborhood-wide average maximum speed for San Carlos customers is up to 95 Mbps.
Show all download speeds
- 86.8% up to 100.0 Mbps
- 5.2% up to 75.0 Mbps
- 7.1% up to 50.0 Mbps
- 0.9% up to 25.0 Mbps
EarthLink DSL upload speeds
In San Carlos 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 Carlos DSL providers. EarthLink offers 3 different upload speeds across the neighborhood, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in San Carlos is up to 20 Mbps. Some customers have slower plan choices, which only go up to 5.0 Mbps. On average, EarthLink customers can get speeds up to 19 Mbps.
Show all upload speeds
- 92.0% up to 20.0 Mbps
- 7.1% up to 10.0 Mbps
- 0.9% up to 5.0 Mbps
AT&T DSL in San Carlos, San Diego, CA
AT&T DSL coverage
About 88.25%, or 13,899 people, have AT&T DSL internet available to them in the neighborhood. The company covers the entire San Carlos area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in most of San Carlos.
AT&T DSL download speeds
AT&T is below average when comparing download speeds to all other internet providers in San Carlos. Versus other DSL providers in the area, AT&T DSL is one of the fastest. There are 4 different maximum speeds throughout San Carlos. The fastest plan anyone in San Carlos can order from AT&T goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the neighborhood-wide average maximum speed for San Carlos customers is up to 95 Mbps.
Show all download speeds
- 86.8% up to 100.0 Mbps
- 5.2% up to 75.0 Mbps
- 7.1% up to 50.0 Mbps
- 0.9% up to 25.0 Mbps
AT&T DSL upload speeds
In San Carlos 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 Carlos DSL providers. AT&T offers 3 different upload speeds across the neighborhood, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in San Carlos is up to 20 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 19 Mbps.
Show all upload speeds
- 92.0% up to 20.0 Mbps
- 7.1% up to 10.0 Mbps
- 0.9% up to 5.0 Mbps
San Carlos DSL by Area
This information is most helpful to those looking for homes or considering moving to San Carlos or any of the areas nearby.
How does DSL internet in San Carlos compare to the rest of San Diego?
DSL internet speeds in San Carlos are much faster versus the average speeds in San Diego: 0.00 Mbps in San Diego versus 95 Mbps in the neighborhood. The city has similar DSL availability compared to the neighborhood. Average DSL coverage in San Diego is 0.00% versus 88.25% in San Carlos.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around San Carlos 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 neighborhoods?
Below are neighborhoods nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Neighborhoods
- Del Cerro, San Diego, CA: more DSL coverage, slower speeds
- Allied Gardens, San Diego, CA: more DSL coverage, faster speeds
- Lake Murray, San Diego, CA: more DSL coverage, slower speeds
- College Area, San Diego, CA: less DSL coverage, slower speeds
- Rolando, San Diego, CA: less DSL coverage, slower speeds
- Tierrasanta, San Diego, CA: more DSL coverage, faster speeds
- Grantville, San Diego, CA: less DSL coverage, slower speeds
- El Cerritos, San Diego, CA: more DSL coverage, slower speeds
- Talmadge, San Diego, CA: more DSL coverage, slower speeds
- Darnall, San Diego, CA: less DSL coverage, slower speeds
Neighborhoods with Similar Populations
- Original Town, Carrollton, TX: less DSL coverage, slower speeds
- North Aurora, Aurora, CO: less DSL coverage, slower speeds
- North Burnet, Austin, TX: less DSL coverage, slower speeds
- North City, San Diego, CA: less DSL coverage, slower speeds
- North Collinwood, Cleveland, OH: more DSL coverage, slower speeds
- North Hill, Akron, OH: more DSL coverage, slower speeds
- Oleander Sunset, Bakersfield, CA: less DSL coverage, slower speeds
- New Tacoma, Tacoma, WA: less DSL coverage, slower speeds
- Pacific Heights, San Francisco, CA: more DSL coverage, slower speeds
- Pleasure Ridge Park, Louisville, KY: less DSL coverage, slower speeds