In Castle Garden there are 2 residential DSL providers covering 57.41% of the city. The average home can get speeds up to 75 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 Castle Garden, CA.
To see availability maps for all providers including fiber, cable, DSL, and more in Castle Garden, CA please click below.
Castle Garden, CA Availability Maps
DSL Internet Service Providers in Castle Garden
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 Castle Garden are not shown.
Castle Garden 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 Castle Garden is DSL internet available?
DSL Internet Availability Key
DSL is available in 57.41% of Castle Garden. 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 Castle Garden above to see who has service at your home.
How fast is DSL internet in Castle Garden?
The map below shows maximum DSL internet speeds by area in Castle Garden.
DSL Internet Speed Key
The average Castle Garden home can get up to 75 Mbps on their DSL internet plan. The fastest DSL download speed in the city is 75 Mbps, which 57.41% of residents can get.
Is DSL the fastest internet I can get in Castle Garden?
The fastest internet for you may vary based on where in Castle Garden you live. In general, cable competes most often with DSL in the city.
- Fiber is the fastest internet type for less than 1% of Castle Garden homes.
- Cable is fastest for 57.41% of the city.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 42.59%.
- Satellite internet may be the only option for less than 1% of Castle Garden homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Castle Garden, along with details on where in Castle Garden and at what speeds.
AT&T DSL in Castle Garden, CA
AT&T DSL coverage
About 57.41%, or 31 people, have AT&T DSL internet available to them in the city. The company covers the entire Castle Garden area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of Castle Garden.
AT&T DSL download speeds
AT&T is below average when comparing download speeds to all other internet providers in Castle Garden. Versus other DSL providers in the area, AT&T DSL is one of the fastest. There are no different maximum speeds throughout Castle Garden. The fastest plan anyone in Castle Garden can order from AT&T goes up to 75 Mbps, and all Castle Garden customers can get this speed.
Show all download speeds
- 100.0% up to 75.0 Mbps
AT&T DSL upload speeds
In Castle Garden 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 Castle Garden DSL providers. AT&T offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Castle Garden is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
EarthLink DSL in Castle Garden, CA
EarthLink DSL coverage
About 57.41%, or 31 people, have EarthLink DSL internet available to them in the city. The company covers the entire Castle Garden area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of Castle Garden.
EarthLink DSL download speeds
EarthLink is below average when comparing download speeds to all other internet providers in Castle Garden. Versus other DSL providers in the area, EarthLink DSL is one of the fastest. There are no different maximum speeds throughout Castle Garden. The fastest plan anyone in Castle Garden can order from EarthLink goes up to 75 Mbps, and all Castle Garden customers can get this speed.
Show all download speeds
- 100.0% up to 75.0 Mbps
EarthLink DSL upload speeds
In Castle Garden 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 Castle Garden DSL providers. EarthLink offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Castle Garden is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
Castle Garden DSL by Area
This information is most helpful to those looking for homes or considering moving to Castle Garden or any of the areas nearby.
How does DSL internet in Castle Garden compare to the rest of California?
DSL internet speeds in Castle Garden are much faster versus the average speeds in California: 0.00 Mbps in California versus 75 Mbps in the city. The state has similar DSL availability compared to the city. Average DSL coverage in California is 0.00% versus 57.41% in Castle Garden.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Castle Garden 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
- McSwain, CA: more DSL coverage, slower speeds
- Atwater, CA: more DSL coverage, slower speeds
- Merced, CA: more DSL coverage, slower speeds
- Winton, CA: more DSL coverage, slower speeds
- Buhach, CA: less DSL coverage, slower speeds
- Cressey, CA: less DSL coverage, slower speeds
- Livingston, CA: more DSL coverage, slower speeds
- Calpack, CA: less DSL coverage, slower speeds
- Planada, CA: more DSL coverage, slower speeds
- Delhi, CA: less DSL coverage, faster speeds
Cities with Similar Populations
- Pennsville, OH: more DSL coverage, slower speeds
- Finley, WI: more DSL coverage, slower speeds
- Patosi, MS: less DSL coverage, slower speeds
- Pearsonia, OK: less DSL coverage, slower speeds
- Pebble, ID: less DSL coverage, slower speeds
- Pennington, AR: less DSL coverage, slower speeds
- Palmetto Beach, AL: more DSL coverage, slower speeds
- Washington Camp, AZ: less DSL coverage, slower speeds
- Waxhaw, MS: more DSL coverage, slower speeds
- Perdido Key, FL: more DSL coverage, faster speeds