In Custer County there are 3 residential Fiber providers covering 86.81% of the county. The average home can get speeds up to 992 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 Fiber internet providers in Custer County, ID.
To see availability maps for all providers including fiber, cable, DSL, and more in Custer County, ID please click below.
Custer County, ID Availability Maps
Fiber 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 fiber internet available?
Fiber Internet Availability Key
Fiber is available in 86.81% of Custer County. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is Custer. Call one of the companies with service in Custer County above to see who has service at your home.
How fast is fiber internet in Custer County?
The map below shows maximum fiber internet speeds by area in Custer County.
Fiber Internet Speed Key
The average Custer County home can get up to 992 Mbps on their fiber internet plan. The fastest fiber download speed in the county is 1,000 Mbps, which 86.01% 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 100 Mbps. See the internet provider details below for info about their speed and coverage in Custer County.
Fiber internet speeds tend to be faster in the southeast parts of Custer County, and slower in the north areas of the county.
Is fiber 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, dsl competes most often with fiber in the county.
- Fiber is the fastest internet type for 86.81% of Custer County homes.
- Cable is fastest for less than 1% of the county.
- DSL is fastest for 6.43%.
- Fixed wireless is fastest for 3.60%.
- Satellite internet may be the only option for 3.16% of Custer County homes.
Fiber 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.
Custer Telephone Cooperative Fiber in Custer County, ID
Custer fiber coverage
About 53.10%, or 2,270 people, have Custer fiber internet available to them in the county. The company covers the north, central, west, northeast, and east Custer County area. Custer is a small internet service provider internet service providers in the US, with internet service available in a majority of Custer County.
Custer Telephone Cooperative fiber download speeds
Custer is above average when comparing download speeds to all other internet providers in Custer County. Versus other fiber providers in the area, Custer fiber is the slowest. There are 2 different maximum speeds throughout Custer County. The fastest plan anyone in Custer County can order from Custer goes up to 1,000 Mbps, the slowest package only goes up to 100 Mbps, and the county-wide average maximum speed for Custer County customers is up to 987 Mbps.
Show all download speeds
- 98.5% up to 1,000.0 Mbps
- 1.5% up to 100.0 Mbps
Custer Telephone Cooperative fiber upload speeds
In Custer County download speeds tend to be equal to than upload speeds for Custer fiber. Compared to other ISPs, Custer is above average where upload speeds are concerned, and the slowest compared to other Custer County fiber providers. Custer 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 1,000 Mbps. Some customers have slower plan choices, which only go up to 100 Mbps. On average, Custer customers can get speeds up to 987 Mbps.
Show all upload speeds
- 98.5% up to 1,000.0 Mbps
- 1.5% up to 100.0 Mbps
ATC Communications (Idaho) Fiber in Custer County, ID
ATC Communications fiber coverage
About 27.49%, or 1,175 people, have ATC Communications fiber internet available to them in the county. The company covers the southeast and south Custer County area. ATC Communications is a small internet service provider internet service providers in the US, with internet service available in a small portion of Custer County.
ATC Communications (Idaho) fiber download speeds
ATC Communications is one of the fastest when comparing download speeds to all other internet providers in Custer County. Versus other fiber providers in the area, ATC Communications fiber is one of the fastest. There are no different maximum speeds throughout Custer County. The fastest plan anyone in Custer County can order from ATC Communications goes up to 1,000 Mbps, and all Custer County customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
ATC Communications (Idaho) fiber upload speeds
In Custer County download speeds tend to be equal to than upload speeds for ATC Communications fiber. Compared to other ISPs, ATC Communications is one of the fastest where upload speeds are concerned, and one of the fastest compared to other Custer County fiber providers. ATC 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 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
Midvale Telephone Company Fiber in Custer County, ID
Midvale Telephone Company fiber coverage
About 6.22%, or 266 people, have Midvale Telephone Company fiber internet available to them in the county. The company covers the west and southwest Custer County area. Midvale Telephone Company is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Custer County.
Midvale Telephone Company fiber download speeds
Midvale Telephone Company is one of the fastest when comparing download speeds to all other internet providers in Custer County. Versus other fiber providers in the area, Midvale Telephone Company fiber is one of the fastest. There are no different maximum speeds throughout Custer County. The fastest plan anyone in Custer County can order from Midvale Telephone Company goes up to 1,000 Mbps, and all Custer County customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Midvale Telephone Company fiber upload speeds
In Custer County download speeds tend to be equal to than upload speeds for Midvale Telephone Company fiber. Compared to other ISPs, Midvale Telephone Company is one of the fastest where upload speeds are concerned, and one of the fastest compared to other Custer County fiber providers. Midvale Telephone Company offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Custer County is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
Custer County Fiber 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 fiber internet in Custer County compare to the rest of Idaho?
Fiber internet speeds in Custer County are much faster versus the average speeds in Idaho: 0.00 Mbps in Idaho versus 992 Mbps in the county. The state has similar fiber availability compared to the county. Average fiber coverage in Idaho is 0.00% versus 86.81% in Custer County.
What zip codes have fiber internet?
Fiber 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 fiber 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
- Clark County, ID: less fiber coverage, faster speeds
- Washington County, ID: less fiber coverage, faster speeds
- Crook County, OR: less fiber coverage, faster speeds
- Johnson County, WY: less fiber coverage, faster speeds
- Campbell County, WY: less fiber coverage, faster speeds
- Meade County, SD: less fiber coverage, faster speeds
- Haakon County, SD: more fiber coverage, faster speeds
- Stanley County, SD: less fiber coverage, faster speeds
- Hughes County, SD: less fiber coverage, faster speeds
- Beadle County, SD: less fiber coverage, faster speeds
Counties with Similar Populations
- Yoakum County, TX: less fiber coverage, faster speeds
- Appanoose County, IA: less fiber coverage, faster speeds
- Archer County, TX: more fiber coverage, faster speeds
- Archuleta County, CO: less fiber coverage, faster speeds
- Yalobusha County, MS: more fiber coverage, faster speeds
- Wrangell City and Borough, AK: less fiber coverage, slower speeds
- Woodruff County, AR: less fiber coverage, faster speeds
- Wirt County, WV: less fiber coverage, faster speeds
- Ziebach County, SD: more fiber coverage, slower speeds
- Winkler County, TX: less fiber coverage, faster speeds