Best Internet Providers in Dewey County, SD
All 5 providers, ranked by coverage, speed and customer ratings
Find internet availability by address in Dewey County, SD
Dewey County has 5 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 county. Reviews are grouped by provider and the type of service they offer, covering all 2 available internet technologies in Dewey County.
Ranks compare Dewey County with the 66 South Dakota counties.
Dewey County Internet Providers, Ranked by Coverage, Speed and Customer Ratings
CRST
Connection
Customer Rating
Fiber
WRT
Connection
Customer Rating
Fiber
T-Mobile Home Internet
Connection
Customer Rating
Fixed Wireless
Providers with less than 1% coverage in this county 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 Dewey County ratings may vary and are shown below.
Who is the Best Internet Provider in Dewey County, SD?
Which Providers are Available at my Home in Dewey County?
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 Dewey County
How Dewey County Compares to the Rest of South Dakota
Dewey County's report card score is tied 59th of 66 and its connectivity index is 20th of 66.
| Measure | Dewey County | Rank among South Dakota counties | South Dakota | US | Leader |
|---|---|---|---|---|---|
| ISP Report Card inputs: what providers offer here | |||||
| Fiber availability | 96.0% | 35th of 66 | 79.0% | 71.5% | Campbell County and Douglas County and 1 more (99.8%) |
| Average top speed | 255 Mbps | 66th of 66 | 2,675 Mbps | 3,486 Mbps | Clay County (4,291 Mbps) |
| Providers at a typical address | 1.1 | Tied 65th of 66 | 5.8 | 7.1 | Lincoln County (8.3) |
| Connectivity index inputs: how much households need and use the internet | |||||
| People per household | 3.1 | 9th of 66 | 2.5 | 2.7 | Oglala Lakota County (4.5) |
| Workers who work from home | 14% | Tied 12th of 66 | 10% | 15% | Perkins County (33%) |
| Homes with a computer, tablet or phone | 83% | Tied 60th of 66 | 94% | 96% | Stanley County (99%) |
| Homes with internet | 84% | Tied 44th of 66 | 90% | 91% | Lincoln County (96%) |
| Homes on fiber, cable or DSL | 69% | Tied 45th of 66 | 76% | 76% | Lincoln County (86%) |
| More about the households here | |||||
| Homes with a desktop or laptop | 59% | Tied 62nd of 66 | 78% | 81% | Lincoln County (88%) |
| Median household income | $51,170 | 59th of 66 | $80,420 | $93,246 | Lincoln County ($106,288) |
| Residents in school (6th grade to college) | 17% | Tied 7th of 66 | 15% | 16% | Clay County (43%) |
Fiber reaches 96.0% of homes in Dewey County, against 79.0% across South Dakota. Households in Dewey County are larger than the US average (3.1 people against 2.7); 14% of workers work from home (US 15%); and the median household income is $51,170 (US $93,246).
Our demographic data is sourced from the latest 5-year release of the American Community Survey by the US Census Bureau.
How Dewey County Compares to Its Neighbors
Dewey County has 7 neighbors. Among them, Sully County has the most homes with fiber (99.6%) and Stanley County the fewest (49.4%); Dewey County has 96.0%.
Map of Dewey County and its neighbors by ISP Report Card grade
Hover over or tap a county for its numbers, and click through to its page.
Dewey County and its neighbors
| County | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| Dewey County (this page) | 5,239 | 96.0% | 255 Mbps | 1.1 | C- | 56/100 |
| Walworth County | 5,315 | 99.4% | 1,201 Mbps | 3.9 | B- | 52/100 |
| Corson County | 3,902 | 88.7% | 865 Mbps | 1.9 | C- | 70/100 |
| Stanley County | 2,980 | 49.4% | 1,852 Mbps | 5.7 | C+ | 55/100 |
| Potter County | 2,472 | 97.1% | 1,000 Mbps | 2.3 | C | 46/100 |
| Ziebach County | 2,413 | 97.9% | 330 Mbps | 1.1 | C- | 67/100 |
| Haakon County | 1,872 | 99.5% | 1,000 Mbps | 2.9 | C+ | 50/100 |
| Sully County | 1,446 | 99.6% | 1,000 Mbps | 2.5 | C | 41/100 |
Internet in Dewey County by City and ZIP Code
Each row links to that place’s page.
Cities and towns in Dewey County
| City or town | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| Eagle Butte | 2,823 | 98.8% | 250 Mbps | 1 | C- | 58/100 |
| North Eagle Butte | 765 | 100.0% | 250 Mbps | 1 | C- | 51/100 |
| Timber Lake | 722 | 75.5% | 219 Mbps | 1.8 | D | 54/100 |
| Isabel | 302 | 90.7% | 250 Mbps | 1 | D+ | 57/100 |
| Green Grass | 283 | 95.8% | 252 Mbps | 1 | D+ | 60/100 |
| La Plant | 278 | 100.0% | 250 Mbps | 1 | C- | 65/100 |
| South Forest City | 190 | 100.0% | 688 Mbps | 1.7 | C | 47/100 |
| Whitehorse | 181 | 100.0% | 250 Mbps | 1.2 | C- | 51/100 |
| Lantry | 113 | 100.0% | 250 Mbps | 1 | C- | 65/100 |
| Bear Creek | 106 | 99.1% | 254 Mbps | 1.1 | C- | 65/100 |
| Trail City | 103 | 99.0% | 824 Mbps | 1.1 | C- | 55/100 |
| Promise | 62 | 98.4% | 311 Mbps | 1.1 | C- | 65/100 |
| Orton | 31 | 100.0% | 298 Mbps | 1 | C- | 63/100 |
ZIP codes in Dewey County
| ZIP code | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| 57625 (Eagle Butte) | 3,998 | 99.2% | 250 Mbps | 1 | C- | 57/100 |
| 57656 (Timber Lake) | 779 | 74.1% | 218 Mbps | 1.8 | D | 55/100 |
| 57633 (Isabel) | 399 | 80.5% | 238 Mbps | 1.1 | D+ | 61/100 |
| 57652 (La Plant) | 385 | 99.7% | 250 Mbps | 1 | C- | 65/100 |
| 57661 (Whitehorse) | 139 | 100.0% | 250 Mbps | 1 | C- | 51/100 |
| 57636 (Lantry) | 112 | 100.0% | 250 Mbps | 1 | C- | 65/100 |
| 57630 (Glencross) | 37 | 0.0% | 25 Mbps | 1.5 | F | 61/100 |
Who is the Fastest Internet Provider in Dewey County?
Data Reported to FCC by ISPs: Average Maximum Available in Dewey County
| WRT | 1,000 |
|---|---|
| Verizon | 300 |
| Cheyenne River Sioux Tribe Telephone Authority (CRST) | 250 |
| Viasat | 100 |
| T-Mobile Home Internet | 100 |
| wispwest.net | 50 |
| HughesNet | 25 |
How fast is your internet?
Test your connection here and see it next to the speeds providers advertise in Dewey County. It takes about 20 seconds and, on a fast line, can move a few hundred MB of data.
Customer Ratings for Dewey County Internet Providers
Local, State, and National Ratings for all Dewey County Internet Providers
The table below shows average customer ratings from customers in Dewey County, South Dakota, and customers throughout the country.
| ISP / Tech Type | Dewey County Overall | South Dakota Overall | National Overall | For Service | ||
|---|---|---|---|---|---|---|
| Verizon | (0) |  (2) | (816) | View Plans | ||
| HughesNet | (0) | (0) |  (25) | View Plans | ||
| WRT | (0) | (0) | (1) | View Plans | ||
| T-Mobile Home Internet | (0) | (0) | (342) | View Plans | ||
| Viasat | (0) | (0) |  (12) | View Plans | ||
| wispwest.net | (0) | (0) | (0) | View Plans | ||
| CRST | (0) | (0) | (0) | View Plans |
Customer Ratings for Internet Provider Speeds in Dewey County
Based on data reported by Dewey County ISPs to the FCC, the fastest speeds in the county are available through Cheyenne River Sioux Tribe Telephone Authority (CRST). The company offers speeds up to 250 Mbps in Dewey County. 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 | Dewey County Speed | South Dakota Speed | National Speed | For Service | ||
|---|---|---|---|---|---|---|
| Verizon | (0) | (2) | (816) | View Plans | ||
| HughesNet | (0) | (0) | (25) | View Plans | ||
| WRT | (0) | (0) | (1) | View Plans | ||
| T-Mobile Home Internet | (0) | (0) | (342) | View Plans | ||
| Viasat | (0) | (0) | (12) | View Plans | ||
| wispwest.net | (0) | (0) | (0) | View Plans | ||
| CRST | (0) | (0) | (0) | View Plans |
Who is the Cheapest Internet Provider in Dewey County?
The table below shows how customers in Dewey County, South Dakota, and the United States rated the affordability of their internet service.
Rated Affordability in Dewey County
| ISP / Tech Type | Dewey County Affordability | South Dakota Affordability | National Affordability | For Service | ||
|---|---|---|---|---|---|---|
| Verizon | (0) |  (2) | (816) | View Plans | ||
| HughesNet | (0) | (0) | (25) | View Plans | ||
| WRT | (0) | (0) | (1) | View Plans | ||
| T-Mobile Home Internet | (0) | (0) | (342) | View Plans | ||
| Viasat | (0) | (0) | (12) | View Plans | ||
| wispwest.net | (0) | (0) | (0) | View Plans | ||
| CRST | (0) | (0) | (0) | View Plans |
Fiber, 5G, Cable and DSL Internet in Dewey County
Which Fiber Internet Providers are Available in Dewey County?
CRST Fiber in Dewey County, SD
Availability:
95.1%
Customer Rating:
(0)
Avg. Download Speed
250 Mbps
Cheyenne River Sioux Tribe Telephone Authority (CRST) offers Fiber service to 95.1% of Dewey County homes. Across the county, CRST Fiber is the only type of service available from the company, with speeds up to 250 Mbps
WRT Fiber in Dewey County, SD
Availability:
1.0%
Customer Rating:
(1)
Avg. Download Speed
1,000 Mbps
WRT offers Fiber service to 1.0% of Dewey County homes. Across the county, WRT Fiber is the only type of service available from the company, with speeds up to 1,000 Mbps
Which Fixed Wireless and LTE Internet Providers are Available in Dewey County?
T-Mobile Home Internet Fixed Wireless in Dewey County, SD
Availability:
11.9%
Customer Rating:
(342)
Avg. Download Speed
90 Mbps
T-Mobile Home Internet offers Fixed Wireless service to 11.9% of Dewey County homes. Across the county, T-Mobile Home Internet Fixed Wireless is the only type of service available from the company, with speeds up to 90 Mbps, with speeds from 25 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 3.0 and as high as 20, with an average of 18 Mbps throughout the county.
Verizon Fixed Wireless in Dewey County, SD
Availability:
1.1%
Customer Rating:
(362)
Avg. Download Speed
158 Mbps
Verizon offers Fixed Wireless service to 1.1% of Dewey County homes. Across the county, Verizon Fixed Wireless is the only type of service available from the company, with speeds up to 158 Mbps, with speeds from 25 Mpbs up to 300 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 6.0 and as high as 20, with an average of 13 Mbps throughout the county.
wispwest.net Fixed Wireless in Dewey County, SD
Availability:
1.0%
Customer Rating:
(0)
Avg. Download Speed
50 Mbps
wispwest.net offers Fixed Wireless service to 1.0% of Dewey County homes. Across the county, wispwest.net Fixed Wireless is the only type of service available from the company, with speeds up to 50 Mbps
Which Cable Internet Providers are Available in Dewey County?
According to the most recently submitted data by internet service providers to the FCC, there are currently no cable providers available in Dewey County, SD.
Which DSL Internet Providers are Available in Dewey County?
According to the most recently submitted data by internet service providers to the FCC, there are currently no DSL providers available in Dewey County, SD.
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 Dewey County?
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 Dewey County, available to 95.1% 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.