In 57066 there are 8 residential internet providers covering 99.17% of the zip. The average home can get speeds up to 632 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.
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8 Internet Service Providers in 57066
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 57066 are not shown.
57066 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
Availability maps for all providers in 57066
Using the dropdown below, please select a provider. Green indicates nearly all homes have service, red indicates few homes have service, and blank indicates no service.
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Internet service is available in 99.17% of 57066. Using our interactive availability map, you can compare service areas for different providers, we include fiber, cable, DSL, or fixed wireless internet service for all providers who offer it. You will notice that some providers might be listed multiple times for each service. If you find no providers cover the location you're looking at, you can opt for satellite service. The most widely available provider is Fort Randall Telephone Company. Now you can call companies in 57066 with more confidence that they might be available.
How fast are internet speeds in 57066?
The map below shows maximum internet speeds by area in 57066.
Internet Speed Key
The average 57066 home can get up to 632 Mbps on their internet plan. For most people, the fastest download speed in the zip is 1,000 Mbps, which 50.89% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 7.98% of homes can only purchase plans up to 50 Mbps. See the internet provider details below for info about their speed and coverage in 57066.
Internet speeds tend to be faster in the northeast parts of 57066, and slower in the east areas of the zip.
What type of internet should I choose in 57066?
The fastest internet for you may vary based on where in 57066 you live. If speed is your main concern, fiber will be the fastest internet in the zip.
- Fiber is the fastest internet type for 50.89% of 57066 homes.
- Cable is fastest for less than 1% of the zip.
- DSL is fastest for 11.35%.
- Fixed wireless is fastest for 36.93%.
- Satellite internet may be the only option for less than 1% of 57066 homes.
Internet Market Health in 57066
Internet Competition Key
The map shows how competitive the 57066 internet service market is. Areas in green have more alternatives, areas in yellow have a few choices, and areas in red may have only one provider. More competition usually means faster speeds and better prices for you, the customer.
Below are quick facts on internet competition and market health in 57066 based on what connections the average home has availabile:
- Average number of internet service providers to a home: 2.2 (very unhealthy)
- Average types of service (fiber, cable, DSL, etc): 1.9 (very unhealthy)
- Average providers with broadband (25 Mbps+) speeds: 2.2 (very unhealthy)
Overall, competition is very unhealthy.
57066 internet customers have the ability to buy internet service from 1 to 4 different providers, depending on where they live. For different types of service, 57066 homes have between 1 and 3 options. The type(s) of service available are dsl, fixed wireless, and fiber, though these may vary depending on the region within the zip.
When it comes to broadband download speeds faster than 25 Mbps, the situation is similar. 57066 internet customers who want faster speeds have between 1 and 4 choices of companies offering speeds up to or over 25 Mbps.
More internet companies with faster speeds means fewer monopolies and better prices for customers. In promoting a free market for internet, 57066 badly needs improvement.
TV & Internet Providers in Depth
Below you'll find which TV and internet providers offer service in 57066, along with details on where in 57066 and at what speeds.
Fort Randall Telephone Company DSL in 57066, SD
Fort Randall Telephone Company DSL coverage
About 72.83%, or 1,059 people, have Fort Randall Telephone Company DSL internet available to them in the zip. The company covers the central, north, east, southeast, south, west, northeast, and northwest 57066 area. Fort Randall Telephone Company is a small internet service provider internet service providers in the US, with internet service available in much of 57066.
Fort Randall Telephone Company DSL download speeds
Fort Randall Telephone Company is below average when comparing download speeds to all other internet providers in 57066. Versus other DSL providers in the area, Fort Randall Telephone Company DSL is the fastest. There are 2 different maximum speeds throughout 57066. The fastest plan anyone in 57066 can order from Fort Randall Telephone Company goes up to 100 Mbps, the slowest package only goes up to 50 Mbps, and the zip-wide average maximum speed for 57066 customers is up to 78 Mbps.
Show all download speeds
- 56.2% up to 100.0 Mbps
- 43.8% up to 50.0 Mbps
Fort Randall Telephone Company DSL upload speeds
In 57066 download speeds tend to be faster than than upload speeds for Fort Randall Telephone Company DSL. Compared to other ISPs, Fort Randall Telephone Company is below average where upload speeds are concerned, and the fastest compared to other 57066 DSL providers. Fort Randall Telephone Company offers 2 different upload speeds across the zip, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in 57066 is up to 20 Mbps. Some customers have slower plan choices, which only go up to 5.0 Mbps. On average, Fort Randall Telephone Company customers can get speeds up to 13 Mbps.
Show all upload speeds
- 56.2% up to 20.0 Mbps
- 43.8% up to 5.0 Mbps
Fort Randall Telephone Company Fiber in 57066, SD
Fort Randall Telephone Company fiber coverage
About 27.03%, or 393 people, have Fort Randall Telephone Company fiber internet available to them in the zip. The company covers the northeast, southwest, southeast, northwest, south, north, east, and west 57066 area. Fort Randall Telephone Company is a small internet service provider internet service providers in the US, with internet service available in a small portion of 57066.
Fort Randall Telephone Company fiber download speeds
Fort Randall Telephone Company is one of the fastest when comparing download speeds to all other internet providers in 57066. Versus other fiber providers in the area, Fort Randall Telephone Company fiber is one of the fastest. There are no different maximum speeds throughout 57066. The fastest plan anyone in 57066 can order from Fort Randall Telephone Company goes up to 1,000 Mbps, and all 57066 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 57066 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 one of the fastest where upload speeds are concerned, and one of the fastest compared to other 57066 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 57066 is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
South Dakota Wireless Internet Fiber in 57066, SD
South Dakota Internet fiber coverage
About 23.59%, or 343 people, have South Dakota Internet fiber internet available to them in the zip. The company covers the central, south, north, and northeast 57066 area. South Dakota Internet is an average-sized internet service provider internet service providers in the US, with internet service available in a small portion of 57066.
South Dakota Wireless Internet fiber download speeds
South Dakota Internet is one of the fastest when comparing download speeds to all other internet providers in 57066. Versus other fiber providers in the area, South Dakota Internet fiber is one of the fastest. There are no different maximum speeds throughout 57066. The fastest plan anyone in 57066 can order from South Dakota Internet goes up to 1,000 Mbps, and all 57066 customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
South Dakota Wireless Internet fiber upload speeds
In 57066 download speeds tend to be equal to than upload speeds for South Dakota Internet fiber. Compared to other ISPs, South Dakota Internet is one of the fastest where upload speeds are concerned, and one of the fastest compared to other 57066 fiber providers. South Dakota Internet offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 57066 is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
Golden West Telecommunications Fiber in 57066, SD
Golden West Telecommunications fiber coverage
About 4.47%, or 65 people, have Golden West Telecommunications fiber internet available to them in the zip. The company covers the southwest, northeast, and west 57066 area. Golden West Telecommunications is a large internet service provider internet service providers in the US, with internet service available in a very small piece of 57066.
Golden West Telecommunications fiber download speeds
Golden West Telecommunications is one of the fastest when comparing download speeds to all other internet providers in 57066. Versus other fiber providers in the area, Golden West Telecommunications fiber is one of the fastest. There are no different maximum speeds throughout 57066. The fastest plan anyone in 57066 can order from Golden West Telecommunications goes up to 1,000 Mbps, and all 57066 customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Golden West Telecommunications fiber upload speeds
In 57066 download speeds tend to be equal to than upload speeds for Golden West Telecommunications fiber. Compared to other ISPs, Golden West Telecommunications is one of the fastest where upload speeds are concerned, and one of the fastest compared to other 57066 fiber providers. Golden West Telecommunications offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 57066 is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
Verizon Fixed Wireless in 57066, SD
Verizon fixed wireless coverage
About 61.97%, or 901 people, have Verizon fixed wireless internet available to them in the zip. The company covers the entire 57066 area. Verizon is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of 57066.
Verizon fixed wireless download speeds
Verizon is below average when comparing download speeds to all other internet providers in 57066. Versus other fixed wireless providers in the area, Verizon fixed wireless is the fastest. There are no different maximum speeds throughout 57066. The fastest plan anyone in 57066 can order from Verizon goes up to 300 Mbps, and all 57066 customers can get this speed.
Show all download speeds
- 100.0% up to 300.0 Mbps
Verizon fixed wireless upload speeds
In 57066 download speeds tend to be faster than than upload speeds for Verizon fixed wireless. Compared to other ISPs, Verizon is below average where upload speeds are concerned, and the fastest compared to other 57066 fixed wireless providers. Verizon offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 57066 is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
EarthLink Fixed Wireless in 57066, SD
EarthLink fixed wireless coverage
About 12.52%, or 182 people, have EarthLink fixed wireless internet available to them in the zip. The company covers the southeast, southwest, west, northeast, south, and east 57066 area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of 57066.
EarthLink fixed wireless download speeds
EarthLink is one of the slowest when comparing download speeds to all other internet providers in 57066. Versus other fixed wireless providers in the area, EarthLink fixed wireless is one of the slowest. There are no different maximum speeds throughout 57066. The fastest plan anyone in 57066 can order from EarthLink goes up to 25 Mbps, and all 57066 customers can get this speed.
Show all download speeds
- 100.0% up to 25.0 Mbps
EarthLink fixed wireless upload speeds
In 57066 download speeds tend to be faster than than upload speeds for EarthLink fixed wireless. Compared to other ISPs, EarthLink is one of the slowest where upload speeds are concerned, and one of the slowest compared to other 57066 fixed wireless providers. EarthLink offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 57066 is up to 3.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 3.0 Mbps
AT&T Fixed Wireless in 57066, SD
AT&T fixed wireless coverage
About 12.52%, or 182 people, have AT&T fixed wireless internet available to them in the zip. The company covers the southeast, southwest, west, northeast, south, and east 57066 area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of 57066.
AT&T fixed wireless download speeds
AT&T is one of the slowest when comparing download speeds to all other internet providers in 57066. Versus other fixed wireless providers in the area, AT&T fixed wireless is one of the slowest. There are no different maximum speeds throughout 57066. The fastest plan anyone in 57066 can order from AT&T goes up to 25 Mbps, and all 57066 customers can get this speed.
Show all download speeds
- 100.0% up to 25.0 Mbps
AT&T fixed wireless upload speeds
In 57066 download speeds tend to be faster than than upload speeds for AT&T fixed wireless. Compared to other ISPs, AT&T is one of the slowest where upload speeds are concerned, and one of the slowest compared to other 57066 fixed wireless providers. AT&T offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 57066 is up to 3.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 3.0 Mbps
57066 Internet by Area
This information is most helpful to those looking for homes or considering moving to 57066 or any of the areas nearby.
How does internet in 57066 compare to the rest of South Dakota?
Internet speeds in 57066 are slower versus the average speeds in South Dakota: 1,953 Mbps in South Dakota versus 632 Mbps in the zip. The state has similar internet availability compared to the zip. Average internet coverage in South Dakota is 98.12% versus 99.17% in 57066.
What zip codes have widespread internet?
Internet coverage varies by zip code and neighborhood. Some examples in or around 57066 are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does internet service 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
- 57062, SD: more internet coverage, faster speeds
- 57315, SD: more internet coverage, faster speeds
- 57063, SD: more internet coverage, faster speeds
- 57040, SD: more internet coverage, faster speeds
- 57329, SD: more internet coverage, faster speeds
- 57067, SD: more internet coverage, faster speeds
- 57380, SD: less internet coverage, slower speeds
- 57078, SD: more internet coverage, faster speeds
- 57361, SD: less internet coverage, faster speeds
- 57046, SD: less internet coverage, faster speeds
Zip Codes with Similar Populations
- 99694, AK: less internet coverage, slower speeds
- 46156, IN: more internet coverage, slower speeds
- 73859, OK: more internet coverage, slower speeds
- 76265, TX: less internet coverage, faster speeds
- 79381, TX: less internet coverage, faster speeds
- 31824, GA: less internet coverage, faster speeds
- 31323, GA: less internet coverage, faster speeds
- 82730, WY: less internet coverage, slower speeds
- 84542, UT: less internet coverage, faster speeds
- 95449, CA: less internet coverage, slower speeds