In Isabel there are 3 residential internet providers covering 91.06% of the city. The average home can get speeds up to 250 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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3 Internet Service Providers in Isabel
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 Isabel are not shown.
Isabel 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 Isabel
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 91.06% of Isabel. 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 CRST. Now you can call companies in Isabel with more confidence that they might be available.
How fast are internet speeds in Isabel?
The map below shows maximum internet speeds by area in Isabel.
Internet Speed Key
The average Isabel home can get up to 250 Mbps on their internet plan. For most people, the fastest download speed in the city is 250 Mbps, which 91.06% of residents can get.
What type of internet should I choose in Isabel?
The fastest internet for you may vary based on where in Isabel you live. If speed is your main concern, fiber will be the fastest internet in the city.
- Fiber is the fastest internet type for 91.06% of Isabel homes.
- Cable is fastest for less than 1% of the city.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for less than 1%.
- Satellite internet may be the only option for 8.94% of Isabel homes.
Internet Market Health in Isabel
Internet Competition Key
The map shows how competitive the Isabel 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 Isabel based on what connections the average home has availabile:
- Average number of internet service providers to a home: 1.0 (very unhealthy)
- Average types of service (fiber, cable, DSL, etc): 1.0 (very unhealthy)
- Average providers with broadband (25 Mbps+) speeds: 1.0 (very unhealthy)
Overall, competition is very unhealthy.
Isabel internet customers have the ability to buy internet service from 1 provider, depending on where they live. For different types of service, Isabel homes have 1 option. The type(s) of service available are fiber, though these may vary depending on the region within the city.
When it comes to broadband download speeds faster than 25 Mbps, the situation is similar. Isabel internet customers who want faster speeds have 1 choice 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, Isabel badly needs improvement.
TV & Internet Providers in Depth
Below you'll find which TV and internet providers offer service in Isabel, along with details on where in Isabel and at what speeds.
Cheyenne River Sioux Tribe Telephone Authority (CRST) Fiber in Isabel, SD
CRST fiber coverage
About 91.06%, or 275 people, have CRST fiber internet available to them in the city. The company covers the entire Isabel area. CRST is a small internet service provider internet service providers in the US, with internet service available in most of Isabel.
Cheyenne River Sioux Tribe Telephone Authority (CRST) fiber download speeds
CRST is the fastest when comparing download speeds to all other internet providers in Isabel. Versus other fiber providers in the area, CRST fiber is the fastest. There are no different maximum speeds throughout Isabel. The fastest plan anyone in Isabel can order from CRST goes up to 250 Mbps, and all Isabel customers can get this speed.
Show all download speeds
- 100.0% up to 250.0 Mbps
Cheyenne River Sioux Tribe Telephone Authority (CRST) fiber upload speeds
In Isabel download speeds tend to be faster than than upload speeds for CRST fiber. Compared to other ISPs, CRST is the fastest where upload speeds are concerned, and the fastest compared to other Isabel fiber providers. CRST offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Isabel is up to 100 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 100.0 Mbps
Isabel Internet by Area
This information is most helpful to those looking for homes or considering moving to Isabel or any of the areas nearby.
How does internet in Isabel compare to the rest of South Dakota?
Internet speeds in Isabel are slower versus the average speeds in South Dakota: 1,953 Mbps in South Dakota versus 250 Mbps in the city. The state has less internet availability compared to the city. Average internet coverage in South Dakota is 98.12% versus 91.06% in Isabel.
What zip codes have widespread internet?
Internet coverage varies by zip code and neighborhood. Some examples in or around Isabel 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 cities?
Below are cities nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Cities
- Thunder Butte, SD: more internet coverage, similar speeds
- Timber Lake, SD: less internet coverage, slower speeds
- Mahto, SD: less internet coverage, slower speeds
- Walker, SD: less internet coverage, slower speeds
- Green Grass, SD: more internet coverage, faster speeds
- Bear Creek, SD: more internet coverage, faster speeds
- Glencross, SD: less internet coverage, faster speeds
- Dupree, SD: more internet coverage, faster speeds
- Lantry, SD: more internet coverage, similar speeds
- Whitehorse, SD: more internet coverage, similar speeds
Cities with Similar Populations
- Freeman, IA: more internet coverage, faster speeds
- Tumbleton, AL: more internet coverage, faster speeds
- Trosky, MN: more internet coverage, faster speeds
- Trevett, ME: more internet coverage, faster speeds
- Traverse, MN: more internet coverage, faster speeds
- Toyei, AZ: more internet coverage, slower speeds
- Tobinsport, IN: more internet coverage, faster speeds
- Tinmouth, VT: more internet coverage, faster speeds
- Tingley, IA: more internet coverage, faster speeds
- Freeport, IA: more internet coverage, faster speeds