In Custer County there are 2 residential DSL providers covering 33.42% of the county. The average home can get speeds up to 24 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 Custer County, SD.
To see availability maps for all providers including fiber, cable, DSL, and more in Custer County, SD please click below.
Custer County, SD Availability Maps
DSL Internet Service Providers in Custer 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 Custer County are not shown.
Custer 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 Custer County is DSL internet available?
DSL Internet Availability Key
DSL is available in 33.42% of Custer County. Areas in green have DSL internet service, where areas in yellow or red may not. The most widely available provider is Golden West Telecommunications. Call one of the companies with service in Custer County above to see who has service at your home.
How fast is DSL internet in Custer County?
The map below shows maximum DSL internet speeds by area in Custer County.
DSL Internet Speed Key
The average Custer County home can get up to 24 Mbps on their DSL internet plan. The fastest DSL download speed in the county is 50 Mbps, which 5.70% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 11.30% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in Custer County.
DSL internet speeds tend to be faster in the northeast parts of Custer County, and slower in the east areas of the county.
Is DSL the fastest internet I can get in Custer County?
The fastest internet for you may vary based on where in Custer County you live. In general, fiber competes most often with DSL in the county.
- Fiber is the fastest internet type for 96.45% of Custer County homes.
- Cable is fastest for less than 1% of the county.
- DSL is fastest for 1.49%.
- Fixed wireless is fastest for 1.59%.
- Satellite internet may be the only option for less than 1% of Custer County homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Custer County, along with details on where in Custer County and at what speeds.
Golden West Telecommunications DSL in Custer County, SD
Golden West Telecommunications DSL coverage
About 19.69%, or 1,638 people, have Golden West Telecommunications DSL internet available to them in the county. The company covers the west, northwest, central, southwest, north, and south Custer County area. Golden West Telecommunications is a large internet service provider internet service providers in the US, with internet service available in a small portion of Custer County.
Golden West Telecommunications DSL download speeds
Golden West Telecommunications is the slowest when comparing download speeds to all other internet providers in Custer County. Versus other DSL providers in the area, Golden West Telecommunications DSL is the slowest. There are 2 different maximum speeds throughout Custer County. The fastest plan anyone in Custer County can order from Golden West Telecommunications goes up to 25 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for Custer County customers is up to 21 Mbps.
Show all download speeds
- 70.6% up to 25.0 Mbps
- 29.4% up to 10.0 Mbps
Golden West Telecommunications DSL upload speeds
In Custer County download speeds tend to be faster than than upload speeds for Golden West Telecommunications DSL. Compared to other ISPs, Golden West Telecommunications is the slowest where upload speeds are concerned, and the slowest compared to other Custer County DSL providers. Golden West Telecommunications offers 2 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 Custer County is up to 3.0 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Golden West Telecommunications customers can get speeds up to 2.4 Mbps.
Show all upload speeds
- 70.6% up to 3.0 Mbps
- 29.4% up to 1.0 Mbps
Mt. Rushmore Telephone Company DSL in Custer County, SD
Mt. Rushmore Telephone Company DSL coverage
About 13.73%, or 1,142 people, have Mt. Rushmore Telephone Company DSL internet available to them in the county. The company covers the northeast, east, southeast, south, and north Custer County area. Mt. Rushmore Telephone Company is a small internet service provider internet service providers in the US, with internet service available in a very small piece of Custer County.
Mt. Rushmore Telephone Company DSL download speeds
Mt. Rushmore Telephone Company is below average when comparing download speeds to all other internet providers in Custer County. Versus other DSL providers in the area, Mt. Rushmore Telephone Company DSL is the fastest. There are 3 different maximum speeds throughout Custer County. The fastest plan anyone in Custer County can order from Mt. Rushmore Telephone Company goes up to 50 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for Custer County customers is up to 29 Mbps.
Show all download speeds
- 41.5% up to 50.0 Mbps
- 18.4% up to 25.0 Mbps
- 40.1% up to 10.0 Mbps
Mt. Rushmore Telephone Company DSL upload speeds
In Custer County download speeds tend to be faster than than upload speeds for Mt. Rushmore Telephone Company DSL. Compared to other ISPs, Mt. Rushmore Telephone Company is below average where upload speeds are concerned, and the fastest compared to other Custer County DSL providers. Mt. Rushmore Telephone Company 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 Custer County is up to 5.0 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Mt. Rushmore Telephone Company customers can get speeds up to 3.0 Mbps.
Show all upload speeds
- 41.5% up to 5.0 Mbps
- 18.4% up to 3.0 Mbps
- 40.1% up to 1.0 Mbps
Custer County DSL by Area
This information is most helpful to those looking for homes or considering moving to Custer County or any of the areas nearby.
How does DSL internet in Custer County compare to the rest of South Dakota?
DSL internet speeds in Custer County are much faster versus the average speeds in South Dakota: 0.00 Mbps in South Dakota versus 24 Mbps in the county. The state has similar DSL availability compared to the county. Average DSL coverage in South Dakota is 0.00% versus 33.42% in Custer County.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Custer 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
- Jackson County, SD: more DSL coverage, slower speeds
- Brule County, SD: more DSL coverage, slower speeds
- Hot Springs County, WY: less DSL coverage, faster speeds
- Davison County, SD: more DSL coverage, slower speeds
- Hanson County, SD: less DSL coverage, slower speeds
- McCook County, SD: less DSL coverage, slower speeds
- Rock County, MN: less DSL coverage, slower speeds
- Teton County, ID: more DSL coverage, faster speeds
- Nobles County, MN: more DSL coverage, faster speeds
- Madison County, ID: more DSL coverage, faster speeds
Counties with Similar Populations
- Amite County, MS: more DSL coverage, slower speeds
- Avery County, NC: more DSL coverage, slower speeds
- Benzie County, MI: more DSL coverage, faster speeds
- Bertie County, NC: more DSL coverage, faster speeds
- Wetzel County, WV: more DSL coverage, faster speeds
- Wayne County, IL: more DSL coverage, faster speeds
- Bosque County, TX: more DSL coverage, faster speeds
- Andrew County, MO: more DSL coverage, faster speeds
- Bledsoe County, TN: more DSL coverage, slower speeds
- Amelia County, VA: more DSL coverage, faster speeds