In 57638 there are 2 residential Fiber providers covering 97.53% of the zip. The average home can get speeds up to 273 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 57638, SD.
To see availability maps for all providers including fiber, cable, DSL, and more in 57638, SD please click below.
Fiber Internet Service Providers in 57638
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 57638 are not shown.
57638 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 57638 is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 97.53% of 57638. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is West River Cooperative Telephone. Call one of the companies with service in 57638 above to see who has service at your home.
How fast is fiber internet in 57638?
The map below shows maximum fiber internet speeds by area in 57638.
Fiber Internet Speed Key
The average 57638 home can get up to 273 Mbps on their fiber internet plan. The fastest fiber download speed in the zip is 1,000 Mbps, which 2.95% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 94.58% of homes can only purchase plans up to 250 Mbps. See the internet provider details below for info about their speed and coverage in 57638.
Fiber internet speeds tend to be faster in the west parts of 57638, and slower in the central areas of the zip.
Is fiber the fastest internet I can get in 57638?
The fastest internet for you may vary based on where in 57638 you live. In general, satellite competes most often with fiber in the zip.
- Fiber is the fastest internet type for 97.47% of 57638 homes.
- Cable is fastest for less than 1% of the zip.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for less than 1%.
- Satellite internet may be the only option for 2.47% of 57638 homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in 57638, along with details on where in 57638 and at what speeds.
West River Cooperative Telephone Fiber in 57638, SD
West River Cooperative Telephone fiber coverage
About 95.79%, or 1,819 people, have West River Cooperative Telephone fiber internet available to them in the zip. The company covers the entire 57638 area. West River Cooperative Telephone is a small internet service provider internet service providers in the US, with internet service available in most of 57638.
West River Cooperative Telephone fiber download speeds
West River Cooperative Telephone is below average when comparing download speeds to all other internet providers in 57638. Versus other fiber providers in the area, West River Cooperative Telephone fiber is the slowest. There are no different maximum speeds throughout 57638. The fastest plan anyone in 57638 can order from West River Cooperative Telephone goes up to 250 Mbps, and all 57638 customers can get this speed.
Show all download speeds
- 100.0% up to 250.0 Mbps
West River Cooperative Telephone fiber upload speeds
In 57638 download speeds tend to be equal to than upload speeds for West River Cooperative Telephone fiber. Compared to other ISPs, West River Cooperative Telephone is average where upload speeds are concerned, and the slowest compared to other 57638 fiber providers. West River Cooperative Telephone offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 57638 is up to 250 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 250.0 Mbps
Consolidated (North Dakota) Fiber in 57638, SD
Consolidated fiber coverage
About 2.95%, or 56 people, have Consolidated fiber internet available to them in the zip. The company covers the southwest, west, and northwest 57638 area. Consolidated is a small internet service provider internet service providers in the US, with internet service available in a very small piece of 57638.
Consolidated (North Dakota) fiber download speeds
Consolidated is the fastest when comparing download speeds to all other internet providers in 57638. Versus other fiber providers in the area, Consolidated fiber is the fastest. There are no different maximum speeds throughout 57638. The fastest plan anyone in 57638 can order from Consolidated goes up to 1,000 Mbps, and all 57638 customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Consolidated (North Dakota) fiber upload speeds
In 57638 download speeds tend to be equal to than upload speeds for Consolidated fiber. Compared to other ISPs, Consolidated is the fastest where upload speeds are concerned, and the fastest compared to other 57638 fiber providers. Consolidated offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 57638 is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
57638 Fiber by Area
This information is most helpful to those looking for homes or considering moving to 57638 or any of the areas nearby.
How does fiber internet in 57638 compare to the rest of South Dakota?
Fiber internet speeds in 57638 are much faster versus the average speeds in South Dakota: 0.00 Mbps in South Dakota versus 273 Mbps in the zip. The state has similar fiber availability compared to the zip. Average fiber coverage in South Dakota is 0.00% versus 97.53% in 57638.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around 57638 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 zip codes?
Below are zip codes nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Zip Codes
- 57634, SD: less fiber coverage, slower speeds
- 57645, SD: less fiber coverage, faster speeds
- 58639, ND: less fiber coverage, faster speeds
- 57641, SD: less fiber coverage, slower speeds
- 57650, SD: more fiber coverage, faster speeds
- 57755, SD: more fiber coverage, faster speeds
- 57642, SD: more fiber coverage, faster speeds
- 57648, SD: more fiber coverage, faster speeds
- 57632, SD: more fiber coverage, faster speeds
- 58542, ND: less fiber coverage, faster speeds
Zip Codes with Similar Populations
- 88317, NM: less fiber coverage, faster speeds
- 89510, NV: less fiber coverage, faster speeds
- 93513, CA: less fiber coverage, faster speeds
- 29482, SC: more fiber coverage, faster speeds
- 27315, NC: less fiber coverage, faster speeds
- 17237, PA: less fiber coverage, faster speeds
- 12996, NY: less fiber coverage, faster speeds
- 13320, NY: less fiber coverage, faster speeds
- 15321, PA: less fiber coverage, faster speeds
- 15322, PA: less fiber coverage, faster speeds