In 57021 there are 3 residential Fiber providers covering 76.42% of the zip. The average home can get speeds up to 4,726 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 57021, SD.
To see availability maps for all providers including fiber, cable, DSL, and more in 57021, SD please click below.
Fiber Internet Service Providers in 57021
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 57021 are not shown.
57021 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 57021 is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 76.42% of 57021. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is Bluepeak. Call one of the companies with service in 57021 above to see who has service at your home.
How fast is fiber internet in 57021?
The map below shows maximum fiber internet speeds by area in 57021.
Fiber Internet Speed Key
The average 57021 home can get up to 4,726 Mbps on their fiber internet plan. The fastest fiber download speed in the zip is 5,000 Mbps, which 71.18% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 5.24% of homes can only purchase plans up to 1,000 Mbps. See the internet provider details below for info about their speed and coverage in 57021.
Fiber internet speeds tend to be faster in the east parts of 57021, and slower in the south areas of the zip.
Is fiber the fastest internet I can get in 57021?
The fastest internet for you may vary based on where in 57021 you live. In general, cable competes most often with fiber in the zip.
- Fiber is the fastest internet type for 76.42% of 57021 homes.
- Cable is fastest for 23.58% 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 less than 1% of 57021 homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in 57021, along with details on where in 57021 and at what speeds.
Bluepeak Fiber in 57021, SD
Bluepeak fiber coverage
About 71.18%, or 163 people, have Bluepeak fiber internet available to them in the zip. The company covers the entire 57021 area. Bluepeak is a large internet service provider internet service providers in the US, with internet service available in much of 57021.
Bluepeak fiber download speeds
Bluepeak is the fastest when comparing download speeds to all other internet providers in 57021. Versus other fiber providers in the area, Bluepeak fiber is the fastest. There are no different maximum speeds throughout 57021. The fastest plan anyone in 57021 can order from Bluepeak goes up to 5,000 Mbps, and all 57021 customers can get this speed.
Show all download speeds
- 100.0% up to 5,000.0 Mbps
Bluepeak fiber upload speeds
In 57021 download speeds tend to be equal to than upload speeds for Bluepeak fiber. Compared to other ISPs, Bluepeak is the fastest where upload speeds are concerned, and the fastest compared to other 57021 fiber providers. Bluepeak offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 57021 is up to 5,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 5,000.0 Mbps
Alliance Communications Fiber in 57021, SD
Alliance Communications fiber coverage
About 19.65%, or 45 people, have Alliance Communications fiber internet available to them in the zip. The company covers the northeast 57021 area. Alliance Communications is a large internet service provider internet service providers in the US, with internet service available in a small portion of 57021.
Alliance Communications fiber download speeds
Alliance Communications is above average when comparing download speeds to all other internet providers in 57021. Versus other fiber providers in the area, Alliance Communications fiber is one of the slowest. There are no different maximum speeds throughout 57021. The fastest plan anyone in 57021 can order from Alliance Communications goes up to 1,000 Mbps, and all 57021 customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Alliance Communications fiber upload speeds
In 57021 download speeds tend to be equal to than upload speeds for Alliance Communications fiber. Compared to other ISPs, Alliance Communications is above average where upload speeds are concerned, and one of the slowest compared to other 57021 fiber providers. Alliance Communications offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 57021 is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
Fort Randall Telephone Company Fiber in 57021, SD
Fort Randall Telephone Company fiber coverage
About 1.75%, or 4 people, have Fort Randall Telephone Company fiber internet available to them in the zip. The company covers the south 57021 area. Fort Randall Telephone Company is a small internet service provider internet service providers in the US, with internet service available in a very small piece of 57021.
Fort Randall Telephone Company fiber download speeds
Fort Randall Telephone Company is above average when comparing download speeds to all other internet providers in 57021. Versus other fiber providers in the area, Fort Randall Telephone Company fiber is one of the slowest. There are no different maximum speeds throughout 57021. The fastest plan anyone in 57021 can order from Fort Randall Telephone Company goes up to 1,000 Mbps, and all 57021 customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Fort Randall Telephone Company fiber upload speeds
In 57021 download speeds tend to be equal to than upload speeds for Fort Randall Telephone Company fiber. Compared to other ISPs, Fort Randall Telephone Company is above average where upload speeds are concerned, and one of the slowest compared to other 57021 fiber providers. Fort Randall Telephone Company offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 57021 is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
57021 Fiber by Area
This information is most helpful to those looking for homes or considering moving to 57021 or any of the areas nearby.
How does fiber internet in 57021 compare to the rest of South Dakota?
Fiber internet speeds in 57021 are much faster versus the average speeds in South Dakota: 0.00 Mbps in South Dakota versus 4,726 Mbps in the zip. The state has similar fiber availability compared to the zip. Average fiber coverage in South Dakota is 0.00% versus 76.42% in 57021.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around 57021 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
- 57036, SD: less fiber coverage, slower speeds
- 57039, SD: less fiber coverage, slower speeds
- 57070, SD: less fiber coverage, slower speeds
- 57014, SD: less fiber coverage, slower speeds
- 57077, SD: more fiber coverage, slower speeds
- 57013, SD: less fiber coverage, slower speeds
- 57029, SD: more fiber coverage, slower speeds
- 57027, SD: more fiber coverage, slower speeds
- 57034, SD: more fiber coverage, slower speeds
- 51240, IA: more fiber coverage, slower speeds
Zip Codes with Similar Populations
- 67041, KS: more fiber coverage, slower speeds
- 62459, IL: more fiber coverage, slower speeds
- 66958, KS: less fiber coverage, slower speeds
- 66944, KS: less fiber coverage, slower speeds
- 66941, KS: more fiber coverage, slower speeds
- 66746, KS: less fiber coverage, slower speeds
- 66501, KS: more fiber coverage, slower speeds
- 66438, KS: more fiber coverage, slower speeds
- 66113, KS: more fiber coverage, slower speeds
- 64686, MO: more fiber coverage, slower speeds