Best Internet Providers in Isabel, SD
All 2 providers, ranked by coverage, speed and customer ratings
Find internet availability by address in Isabel, SD
Isabel has 2 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Fiber and Fixed Wireless internet are available in the city. Reviews are grouped by provider and the type of service they offer, covering all 2 available internet technologies in Isabel.
Ranks compare Isabel with the 31,388 US places under 1,000 people, the tiers of our fastest-cities rankings.
Isabel Internet Providers, Ranked by Coverage, Speed and Customer Ratings
CRST
Connection
Customer Rating
Fiber
T-Mobile Home Internet
Connection
Customer Rating
Fixed Wireless
Providers with less than 1% coverage in this city are excluded from the list. To see if one of these providers is available at your home, please use the address search above.
Speed and technology may vary by address for all providers. Please note we may have a financial relationship with some of the providers above, which does not impact the customer ratings displayed. Customer ratings listed above are national ratings, local Isabel ratings may vary and are shown below.
Who is the Best Internet Provider in Isabel, SD?
Which Providers are Available at my Home in Isabel?
Coverage changes block by block. Pick a provider and a technology to see where its service reaches: the darker the area, the larger the share of homes it covers. For your exact address, use the address search above.
Coverage map for each provider in Isabel
How Isabel Compares to Places Its Size
Isabel's report card score is in the bottom 30% and its connectivity index is in the top 21%.
| Measure | Isabel | Rank among US places under 1,000 people | Dewey County | South Dakota | US | Leader |
|---|---|---|---|---|---|---|
| ISP Report Card inputs: what providers offer here | ||||||
| Fiber availability | 90.7% | top 40% | 96.0% | 79.0% | 71.5% | 6,946 places at 100.0% |
| Average top speed | 250 Mbps | bottom 12% | 255 Mbps | 2,675 Mbps | 3,486 Mbps | Fairmount, TN and Falling Water, TN and 5 more (25,000 Mbps) |
| Providers at a typical address | 1 | bottom 3% | 1.1 | 5.8 | 7.1 | Los Prados, PR (15.1) |
| Connectivity index inputs: how much households need and use the internet | ||||||
| People per household | 2.7 | top 21% | 3.1 | 2.5 | 2.7 | Paguate, NM (13.4) |
| Workers who work from home | 16% | top 18% | 14% | 10% | 15% | Boys Town, NE (100%) |
| Homes with a computer, tablet or phone | 87% | bottom 20% | 83% | 94% | 96% | 1,494 places at 100% |
| Homes with internet | 86% | top 50% | 84% | 90% | 91% | 370 places at 100% |
| Homes on fiber, cable or DSL | 67% | top 31% | 69% | 76% | 76% | 23 places at 100% |
| More about the households here | ||||||
| Homes with a desktop or laptop | 66% | bottom 33% | 59% | 78% | 81% | 72 places at 100% |
| Median household income | $61,585 | bottom 34% | $51,170 | $80,420 | $93,246 | 22 places at $250,001 |
| Residents in school (6th grade to college) | 15% | top 22% | 17% | 15% | 16% | University at Buffalo, NY (100%) |
Fiber reaches 90.7% of homes in Isabel, against 96.0% across Dewey County and 79.0% across South Dakota. Households in Isabel are the same size as the US average (2.7 people against 2.7); 16% of workers work from home (US 15%); and the median household income is $61,585 (US $93,246).
Our demographic data is sourced from the latest 5-year release of the American Community Survey by the US Census Bureau.
Fiber, 5G, Cable and DSL Internet in Isabel
Which Fiber Internet Providers are Available in Isabel?
CRST Fiber in Isabel, SD
Availability:
90.7%
Customer Rating:
(0)
Avg. Download Speed
250 Mbps
Cheyenne River Sioux Tribe Telephone Authority (CRST) offers Fiber service to 90.7% of Isabel homes. Across the city, CRST Fiber is the only type of service available from the company, with speeds up to 250 Mbps
Which Fixed Wireless and LTE Internet Providers are Available in Isabel?
T-Mobile Home Internet Fixed Wireless in Isabel, SD
Availability:
2.6%
Customer Rating:
(342)
Avg. Download Speed
25 Mbps
T-Mobile Home Internet offers Fixed Wireless service to 2.6% of Isabel homes. Across the city, T-Mobile Home Internet Fixed Wireless is the only type of service available from the company, with speeds up to 25 Mbps
Which Cable Internet Providers are Available in Isabel?
According to the most recently submitted data by internet service providers to the FCC, there are currently no cable providers available in Isabel, SD.
Which DSL Internet Providers are Available in Isabel?
According to the most recently submitted data by internet service providers to the FCC, there are currently no DSL providers available in Isabel, SD.
Internet in Isabel by Neighborhood and ZIP Code
Isabel has 1 ZIP code with its own page. Each row links to that place’s page.
Neighborhoods in Isabel
| Neighborhood | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|
ZIP codes in Isabel
| ZIP code | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| 57633 | 399 | 80.5% | 238 Mbps | 1.1 | D+ | 61/100 |
How Isabel Compares to Nearby Places
The 10 places nearest to Isabel that have their own pages are all within 29 miles. Among them, Whitehorse has the most homes with fiber (100.0%) and Glencross the fewest (9.0%); Isabel has 90.7%.
| Place | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| Isabel (this page) | 302 | 90.7% | 250 Mbps | 1 | D+ | 57/100 |
| Timber Lake | 722 | 75.5% | 219 Mbps | 1.8 | D | 54/100 |
| Dupree | 697 | 99.0% | 354 Mbps | 1.2 | C- | 64/100 |
| Green Grass | 283 | 95.8% | 252 Mbps | 1 | D+ | 60/100 |
| Whitehorse | 181 | 100.0% | 250 Mbps | 1.2 | C- | 51/100 |
| Lantry | 113 | 100.0% | 250 Mbps | 1 | C- | 65/100 |
| Thunder Butte | 108 | 100.0% | 250 Mbps | 1 | C- | 63/100 |
| Bear Creek | 106 | 99.1% | 254 Mbps | 1.1 | C- | 65/100 |
| Glencross | 100 | 9.0% | 262 Mbps | 1.2 | D- | 66/100 |
| Walker | 37 | 48.6% | 176 Mbps | 1.7 | D | 66/100 |
| Mahto | 35 | 20.0% | 130 Mbps | 1 | D- | 66/100 |
Who is the Fastest Internet Provider in Isabel?
Data Reported to FCC by ISPs: Average Maximum Available in Isabel
| Cheyenne River Sioux Tribe Telephone Authority (CRST) | 250 |
|---|---|
| Viasat | 100 |
| HughesNet | 25 |
| T-Mobile Home Internet | 25 |
How fast is your internet?
Test your connection here and see it next to the speeds providers advertise in Isabel. It takes about 20 seconds and, on a fast line, can move a few hundred MB of data.
Customer Ratings for Isabel Internet Providers
Local, State, and National Ratings for all Isabel Internet Providers
The table below shows average customer ratings from customers in Isabel, South Dakota, and customers throughout the country.
| ISP / Tech Type | Isabel Overall | South Dakota Overall | National Overall | For Service | ||
|---|---|---|---|---|---|---|
| HughesNet | (0) | (0) |  (25) | View Plans | ||
| T-Mobile Home Internet | (0) | (0) | (342) | View Plans | ||
| Viasat | (0) | (0) |  (12) | View Plans | ||
| CRST | (0) | (0) | (0) | View Plans |
Customer Ratings for Internet Provider Speeds in Isabel
Based on data reported by Isabel ISPs to the FCC, the fastest speeds in the city are available through Cheyenne River Sioux Tribe Telephone Authority (CRST). The company offers speeds up to 250 Mbps in Isabel. Therefore, the average customer can get up to 250 Mbps if they’re willing to purchase the fastest subscription tier available at their homes.
| ISP / Tech Type | Isabel Speed | South Dakota Speed | National Speed | For Service | ||
|---|---|---|---|---|---|---|
| HughesNet | (0) | (0) | (25) | View Plans | ||
| T-Mobile Home Internet | (0) | (0) | (342) | View Plans | ||
| Viasat | (0) | (0) | (12) | View Plans | ||
| CRST | (0) | (0) | (0) | View Plans |
Who is the Cheapest Internet Provider in Isabel?
The table below shows how customers in Isabel, South Dakota, and the United States rated the affordability of their internet service.
Rated Affordability in Isabel
| ISP / Tech Type | Isabel Affordability | South Dakota Affordability | National Affordability | For Service | ||
|---|---|---|---|---|---|---|
| HughesNet | (0) | (0) | (25) | View Plans | ||
| T-Mobile Home Internet | (0) | (0) | (342) | View Plans | ||
| Viasat | (0) | (0) | (12) | View Plans | ||
| CRST | (0) | (0) | (0) | View Plans |
Customer Reviews for Internet Service Providers in South Dakota
Customer Reviews
ISPReports User
Midco Cable
October 02, 2026 Constant outages, and a lot more expensive than other providers.
A Brookings, SD Customer
Mediacom Cable
June 05, 2026 
Brian M.
Bluepeak Fiber
June 01, 2026 The installation charge was too high and there are a lot of hidden fees and taxes.
Aaron M.
AT&T Fixed Wireless
May 29, 2026 My internet provider has been very reliable and consistent. I have used it on the go in many locations and it has rarely let me down. I am a very satisfied customer of AT&T and have nothing but praise for the service provided and the price point. I would highly recommend this service to everyone I know.
Dustin B.
Midco Fixed Wireless
April 14, 2026 They have good service, but their pricing is beyond sane. Basic cable runs $60 each room so to have basic cable in my home would cost $180. FOr basic cable. Basic non Wi Fi internet starts at $60 month. It's absolutely nuts how much it costs.
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Which ISP Should You Choose in Isabel?
The right ISP for you depends upon your needs, but in general we can make the following suggestions:
- The fastest internet provider should be Cheyenne River Sioux Tribe Telephone Authority (CRST).
- Viasat, HughesNet, and Cheyenne River Sioux Tribe Telephone Authority (CRST) has the broadest coverage in Isabel, available to 90.7% of homes, and is most likely to cover your home. To find out exactly what’s available at your home, please use our address search tool.