In Custer County there are 3 residential DSL providers covering 88.46% of the county. The average home can get speeds up to 16 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, MT.
To see availability maps for all providers including fiber, cable, DSL, and more in Custer County, MT please click below.
Custer County, MT 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 88.46% of Custer County. Areas in green have DSL internet service, where areas in yellow or red may not. The most widely available provider is Centurylink. 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 16 Mbps on their DSL internet plan. The fastest DSL download speed in the county is 100 Mbps, which 1.37% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 76.66% 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 south parts of Custer County, and slower in the north 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, cable competes most often with DSL in the county.
- Fiber is the fastest internet type for 11.91% of Custer County homes.
- Cable is fastest for 81.32% of the county.
- DSL is fastest for 1.72%.
- Fixed wireless is fastest for 2.77%.
- Satellite internet may be the only option for 2.28% 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.
Centurylink DSL in Custer County, MT
Centurylink DSL coverage
About 85.57%, or 10,155 people, have Centurylink DSL internet available to them in the county. The company covers the entire Custer County area. Centurylink is one of the largest internet service providers internet service providers in the US, with internet service available in most of Custer County.
Centurylink DSL download speeds
Centurylink is below average when comparing download speeds to all other internet providers in Custer County. Versus other DSL providers in the area, Centurylink DSL is average. There are 4 different maximum speeds throughout Custer County. The fastest plan anyone in Custer County can order from Centurylink goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for Custer County customers is up to 15 Mbps.
Show all download speeds
- 1.6% up to 100.0 Mbps
- 4.3% up to 60.0 Mbps
- 6.3% up to 40.0 Mbps
- 87.8% up to 10.0 Mbps
Centurylink DSL upload speeds
In Custer County download speeds tend to be faster than than upload speeds for Centurylink DSL. Compared to other ISPs, Centurylink is below average where upload speeds are concerned, and below average compared to other Custer County DSL providers. Centurylink 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 Custer County is up to 10 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Centurylink customers can get speeds up to 1.4 Mbps.
Show all upload speeds
- 1.6% up to 10.0 Mbps
- 4.3% up to 5.0 Mbps
- 6.3% up to 3.0 Mbps
- 87.8% up to 1.0 Mbps
Range DSL in Custer County, MT
Range DSL coverage
About 2.72%, or 323 people, have Range DSL internet available to them in the county. The company covers the southwest, southeast, northeast, and northwest Custer County area. Range is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Custer County.
Range DSL download speeds
Range is below average when comparing download speeds to all other internet providers in Custer County. Versus other DSL providers in the area, Range DSL is the fastest. There are 3 different maximum speeds throughout Custer County. The fastest plan anyone in Custer County can order from Range 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
- 45.2% up to 50.0 Mbps
- 4.3% up to 30.0 Mbps
- 50.5% up to 10.0 Mbps
Range DSL upload speeds
In Custer County download speeds tend to be faster than than upload speeds for Range DSL. Compared to other ISPs, Range is below average where upload speeds are concerned, and the fastest compared to other Custer County DSL providers. Range 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 20 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Range customers can get speeds up to 10.0 Mbps.
Show all upload speeds
- 45.2% up to 20.0 Mbps
- 4.3% up to 10.0 Mbps
- 50.5% up to 1.0 Mbps
Mid-Rivers COMMUNICATIONS DSL in Custer County, MT
Mid-Rivers COMMUNICATIONS DSL coverage
About 1.21%, or 143 people, have Mid-Rivers COMMUNICATIONS DSL internet available to them in the county. The company covers the northwest, north, southeast, central, and northeast Custer County area. Mid-Rivers COMMUNICATIONS is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Custer County.
Mid-Rivers COMMUNICATIONS DSL download speeds
Mid-Rivers COMMUNICATIONS is the slowest when comparing download speeds to all other internet providers in Custer County. Versus other DSL providers in the area, Mid-Rivers COMMUNICATIONS DSL is the slowest. There are no different maximum speeds throughout Custer County. The fastest plan anyone in Custer County can order from Mid-Rivers COMMUNICATIONS goes up to 10 Mbps, and all Custer County customers can get this speed.
Show all download speeds
- 100.0% up to 10.0 Mbps
Mid-Rivers COMMUNICATIONS DSL upload speeds
In Custer County download speeds tend to be faster than than upload speeds for Mid-Rivers COMMUNICATIONS DSL. Compared to other ISPs, Mid-Rivers COMMUNICATIONS is the slowest where upload speeds are concerned, and the slowest compared to other Custer County DSL providers. Mid-Rivers COMMUNICATIONS offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Custer County is up to 1.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% 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 Montana?
DSL internet speeds in Custer County are much faster versus the average speeds in Montana: 0.00 Mbps in Montana versus 16 Mbps in the county. The state has similar DSL availability compared to the county. Average DSL coverage in Montana is 0.00% versus 88.46% 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
- Fallon County, MT: less DSL coverage, slower speeds
- Musselshell County, MT: less DSL coverage, slower speeds
- Meagher County, MT: less DSL coverage, faster speeds
- Powell County, MT: less DSL coverage, slower speeds
- Granite County, MT: more DSL coverage, faster speeds
- Ravalli County, MT: more DSL coverage, faster speeds
- Wilkin County, MN: less DSL coverage, faster speeds
- Otter Tail County, MN: less DSL coverage, faster speeds
- Clearwater County, ID: less DSL coverage, faster speeds
- Wadena County, MN: less DSL coverage, faster speeds
Counties with Similar Populations
- Baker County, OR: less DSL coverage, faster speeds
- Bates County, MO: less DSL coverage, faster speeds
- Barton County, MO: less DSL coverage, faster speeds
- Barnwell County, SC: less DSL coverage, faster speeds
- Barnes County, ND: less DSL coverage, slower speeds
- White County, IL: less DSL coverage, faster speeds
- Barber County, KS: less DSL coverage, faster speeds
- Baraga County, MI: more DSL coverage, slower speeds
- Sevier County, UT: more DSL coverage, slower speeds
- Bamberg County, SC: less DSL coverage, slower speeds