Best Internet Providers in Grant County, SD
All 8 providers, ranked by coverage, speed and customer ratings
Find internet availability by address in Grant County, SD
Grant County has 8 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Cable, Fiber, Fixed Wireless, and DSL internet are available in the county. Reviews are grouped by provider and the type of service they offer, covering all 4 available internet technologies in Grant County.
Ranks compare Grant County with the 66 South Dakota counties.
The Best Internet in Grant County, SD at a Glance
Grant County Internet Providers, Ranked by Coverage, Speed and Customer Ratings
ITC
Connection
Customer Rating
Fiber
CenturyLink
Connection
Customer Rating
DSL
Midco
Connection
Customer Rating
Cable
Fixed Wireless
Verizon
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 Grant County ratings may vary and are shown below.
Who is the Best Internet Provider in Grant County, SD?
Interstate Telecommunications Cooperative is the highest-rated internet provider in Grant County based on 27 South Dakota customer reviews, and T-Mobile Home Internet has the highest rating nationwide. The provider information above and the information immediately below can help you decide. Compare provider ratings and review counts above.
Which Providers are Available at my Home in Grant 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 Grant County
- Midco - cable coverage map
- ITC - fiber coverage map
- Verizon - fixed wireless coverage map
- RC Technologies - fiber coverage map
- T-Mobile Home Internet - fixed wireless coverage map
- CenturyLink - dsl coverage map
- Midco - fixed wireless coverage map
- AT&T - fixed wireless coverage map
- EarthLink - fixed wireless coverage map
How Grant County Compares to the Rest of South Dakota
Grant County's report card score is tied 19th of 66 and its connectivity index is tied 36th of 66.
| Measure | Grant County | Rank among South Dakota counties | South Dakota | US | Leader |
|---|---|---|---|---|---|
| ISP Report Card inputs: what providers offer here | |||||
| Fiber availability | 95.2% | 37th of 66 | 79.0% | 71.5% | Campbell County and Douglas County and 1 more (99.8%) |
| Average top speed | 1,529 Mbps | 18th of 66 | 2,675 Mbps | 3,486 Mbps | Clay County (4,291 Mbps) |
| Providers at a typical address | 3.7 | 24th of 66 | 5.8 | 7.1 | Lincoln County (8.3) |
| Connectivity index inputs: how much households need and use the internet | |||||
| People per household | 2.5 | Tied 21st of 66 | 2.5 | 2.7 | Oglala Lakota County (4.5) |
| Workers who work from home | 12% | Tied 19th of 66 | 10% | 15% | Perkins County (33%) |
| Homes with a computer, tablet or phone | 90% | Tied 45th of 66 | 94% | 96% | Stanley County (99%) |
| Homes with internet | 85% | Tied 41st of 66 | 90% | 91% | Lincoln County (96%) |
| Homes on fiber, cable or DSL | 70% | Tied 41st of 66 | 76% | 76% | Lincoln County (86%) |
| More about the households here | |||||
| Homes with a desktop or laptop | 74% | Tied 34th of 66 | 78% | 81% | Lincoln County (88%) |
| Median household income | $76,358 | 28th of 66 | $80,420 | $93,246 | Lincoln County ($106,288) |
| Residents in school (6th grade to college) | 13% | Tied 36th of 66 | 15% | 16% | Clay County (43%) |
Fiber reaches 95.2% of homes in Grant County, against 79.0% across South Dakota. Households in Grant County are smaller than the US average (2.5 people against 2.7); 12% of workers work from home (US 15%); and the median household income is $76,358 (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 Grant County Compares to Its Neighbors
Grant County has 6 neighbors, 2 of them in Minnesota. Among them, Lac qui Parle County, MN has the most homes with fiber (99.8%) and Big Stone County, MN the fewest (45.1%); Grant County has 95.2%.
Map of Grant County and its neighbors by ISP Report Card grade
Hover over or tap a county for its numbers, and click through to its page.
Grant County and its neighbors
| County | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| Grant County (this page) | 7,556 | 95.2% | 1,529 Mbps | 3.7 | C+ | 49/100 |
| Codington County | 28,325 | 65.2% | 3,091 Mbps | 7.3 | B | 46/100 |
| Roberts County | 10,280 | 99.0% | 1,186 Mbps | 2.7 | C+ | 52/100 |
| Lac qui Parle County, MN | 6,719 | 99.8% | 1,000 Mbps | 4.5 | B- | 46/100 |
| Day County | 5,449 | 99.4% | 1,130 Mbps | 2.3 | C+ | 43/100 |
| Big Stone County, MN | 5,166 | 45.1% | 1,105 Mbps | 2.8 | D+ | 56/100 |
| Deuel County | 4,295 | 99.7% | 1,003 Mbps | 2.4 | C+ | 45/100 |
Internet in Grant County by City and ZIP Code
Each row links to that place’s page.
Cities and towns in Grant County
| City or town | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| Milbank | 4,650 | 99.9% | 1,790 Mbps | 4.7 | B | 46/100 |
| Big Stone City | 1,106 | 68.4% | 1,220 Mbps | 2.9 | C- | 42/100 |
| Summit | 496 | 98.2% | 1,493 Mbps | 1.9 | C+ | 49/100 |
| Revillo | 445 | 100.0% | 1,000 Mbps | 2.2 | C | 46/100 |
| Corona | 421 | 100.0% | 1,251 Mbps | 2.2 | C+ | 59/100 |
| Twin Brooks | 287 | 100.0% | 1,026 Mbps | 2 | C+ | 62/100 |
| Labolt | 237 | 100.0% | 1,000 Mbps | 2.5 | C+ | 62/100 |
| Marvin | 223 | 97.3% | 1,472 Mbps | 1.5 | C | 61/100 |
| Strandburg | 197 | 100.0% | 1,000 Mbps | 1.3 | C | 65/100 |
| Stockholm | 186 | 100.0% | 1,000 Mbps | 1.2 | C | 64/100 |
ZIP codes in Grant County
| ZIP code | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| 57252 (Milbank) | 5,032 | 100.0% | 1,731 Mbps | 4.6 | B | 47/100 |
| 57216 (Big Stone City) | 902 | 61.3% | 1,232 Mbps | 2.9 | C- | 37/100 |
| 57266 (Summit) | 578 | 98.4% | 1,448 Mbps | 2 | C+ | 51/100 |
| 57259 (Revillo) | 432 | 100.0% | 1,000 Mbps | 2.1 | C | 48/100 |
| 57269 (Twin Brooks) | 374 | 100.0% | 1,028 Mbps | 1.8 | C+ | 62/100 |
| 57264 (Stockholm) | 220 | 100.0% | 1,000 Mbps | 1.2 | C | 64/100 |
| 57251 (Marvin) | 211 | 97.2% | 1,437 Mbps | 1.2 | C | 61/100 |
| 57256 (Ortley) | 200 | 99.0% | 1,159 Mbps | 1.7 | C | 56/100 |
| 57265 (Strandburg) | 181 | 100.0% | 1,000 Mbps | 1.5 | C | 65/100 |
| 57246 (Labolt) | 153 | 100.0% | 1,000 Mbps | 1.7 | C | 60/100 |
Who is the Fastest Internet Provider in Grant County?
According to unbiased feedback from real internet customers, they reported being happiest with speeds provided by Interstate Telecommunications Cooperative. On the other hand, based on data provided by the internet providers to the FCC, Midco should have faster speeds at a local level. While we typically put more weight on real-world customer ratings, we display both satisfaction and technical maximum information for customers to decide for themselves.
Data Reported to FCC by ISPs: Average Maximum Available in Grant County
| Midco | 2,000 |
|---|---|
| RC Technologies | 1,500 |
| Interstate Telecommunications Cooperative | 1,000 |
| Verizon | 300 |
| Viasat | 100 |
| T-Mobile Home Internet | 100 |
| CenturyLink | 100 |
| HughesNet | 25 |
| AT&T | 25 |
| EarthLink | 25 |
How fast is your internet?
Test your connection here and see it next to the speeds providers advertise in Grant County. It takes about 20 seconds and, on a fast line, can move a few hundred MB of data.
Customer Ratings for Grant County Internet Providers
Based on 27 reviews from South Dakota internet customers, Interstate Telecommunications Cooperative is the best internet service provider for Grant County residents. Interstate Telecommunications Cooperative was rated at an average of 4.50 out of 5 in our report for overall customer satisfaction. Verizon wins for second-place in South Dakota, with 3.50 out of 5 stars and 75.0% coverage in Grant County.
At a national level, based on 2450 national reviews for any of the providers listed above, T-Mobile Home Internet is rated higher than any other provider, with a rating of 4.02 out of 5.
Local, State, and National Ratings for all Grant County Internet Providers
The table below shows average customer ratings from customers in Grant County, South Dakota, and customers throughout the country.
| ISP / Tech Type | Grant County Overall | South Dakota Overall | National Overall | For Service | ||
|---|---|---|---|---|---|---|
| ITC |  (1) | (6) | (6) | View Plans | ||
| RC Technologies |  (1) | (1) | (1) | View Plans | ||
| AT&T |  (0) | (4) | (1051) | View Plans | ||
| Midco | (0) | (14) | (36) | View Plans | ||
| Verizon | (0) | (2) | (816) | View Plans | ||
| HughesNet | (0) | (0) |  (25) | View Plans | ||
| T-Mobile Home Internet | (0) | (0) | (342) | View Plans | ||
| EarthLink | (0) | (0) | (15) | View Plans | ||
| CenturyLink | (0) | (0) | (183) | View Plans | ||
| Viasat | (0) | (0) |  (12) | View Plans |
Customer Ratings for Internet Provider Speeds in Grant County
Based on data reported by Grant County ISPs to the FCC, the fastest speeds in the county are available through Midco. The company offers speeds up to 2,000 Mbps in Grant County. Therefore, the average customer can get up to 1,813 Mbps if they’re willing to purchase the fastest subscription tier available at their homes.
However, actual customers rated their satisfaction with internet speed highest with Interstate Telecommunications Cooperative. This indicates ITC reliably delivers speeds expected by the customer based on the plan they are paying for.
| ISP / Tech Type | Grant County Speed | South Dakota Speed | National Speed | For Service | ||
|---|---|---|---|---|---|---|
| RC Technologies | (1) | (1) | (1) | View Plans | ||
| ITC | (1) | (6) | (6) | View Plans | ||
| AT&T | (0) | (4) | (1051) | View Plans | ||
| Midco | (0) | (14) | (36) | View Plans | ||
| Verizon | (0) | (2) | (816) | View Plans | ||
| HughesNet | (0) | (0) | (25) | View Plans | ||
| T-Mobile Home Internet | (0) | (0) | (342) | View Plans | ||
| CenturyLink | (0) | (0) | (183) | View Plans | ||
| EarthLink | (0) | (0) | (15) | View Plans | ||
| Viasat | (0) | (0) | (12) | View Plans |
Who is the Cheapest Internet Provider in Grant County?
Of the providers in Grant County, customers rate Verizon the best for price. Data comes from customers rating their satisfaction with pricing: in Grant County where enough of them have reviewed a provider, otherwise across South Dakota or the country. This feedback is valuable because it considers price changes and whether the speeds paid for are worth it.
Verizon is rated 3.00 out of 5 for price, which is lower than the average across all internet providers in the country. Interstate Telecommunications Cooperative is rated second for affordability, with an average price rating of 3.50 out of 5.
The table below shows how customers in Grant County, South Dakota, and the United States rated the affordability of their internet service.
Rated Affordability in Grant County
| ISP / Tech Type | Grant County Affordability | South Dakota Affordability | National Affordability | For Service | ||
|---|---|---|---|---|---|---|
| ITC | (1) | (6) | (6) | View Plans | ||
| RC Technologies | (1) | (1) | (1) | View Plans | ||
| AT&T | (0) | (4) | (1051) | View Plans | ||
| Midco | (0) | (14) | (36) | View Plans | ||
| Verizon | (0) | (2) | (816) | View Plans | ||
| HughesNet | (0) | (0) | (25) | View Plans | ||
| T-Mobile Home Internet | (0) | (0) | (342) | View Plans | ||
| CenturyLink | (0) | (0) | (183) | View Plans | ||
| EarthLink | (0) | (0) | (15) | View Plans | ||
| Viasat | (0) | (0) | (12) | View Plans |
Fiber, 5G, Cable and DSL Internet in Grant County
Which Fiber Internet Providers are Available in Grant County?
ITC Fiber in Grant County, SD
Availability:
89.7%
Customer Rating:
(6)
Avg. Download Speed
1,000 Mbps
Interstate Telecommunications Cooperative offers Fiber service to 89.7% of Grant County homes. Across the county, ITC Fiber is the only type of service available from the company, with speeds up to 1,000 Mbps
RC Technologies Fiber in Grant County, SD
Availability:
6.1%
Customer Rating:
(1)
Avg. Download Speed
1,500 Mbps
RC Technologies offers Fiber service to 6.1% of Grant County homes. Across the county, RC Technologies Fiber is the only type of service available from the company, with speeds up to 1,500 Mbps
Which Fixed Wireless and LTE Internet Providers are Available in Grant County?
Verizon Fixed Wireless in Grant County, SD
Availability:
75.0%
Customer Rating:
(362)
Avg. Download Speed
246 Mbps
Verizon offers Fixed Wireless service to 75.0% of Grant County homes. Across the county, Verizon Fixed Wireless is the only type of service available from the company, with speeds up to 246 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 17 Mbps throughout the county.
T-Mobile Home Internet Fixed Wireless in Grant County, SD
Availability:
71.2%
Customer Rating:
(342)
Avg. Download Speed
75 Mbps
T-Mobile Home Internet offers Fixed Wireless service to 71.2% of Grant 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 75 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 14 Mbps throughout the county.
EarthLink Fixed Wireless in Grant County, SD
Availability:
6.4%
Customer Rating:
(4)
Avg. Download Speed
25 Mbps
EarthLink offers Fixed Wireless service to 6.4% of Grant County homes. Across the county, EarthLink Fixed Wireless is the only type of service available from the company, with speeds up to 25 Mbps
AT&T Fixed Wireless in Grant County, SD
Availability:
6.4%
Customer Rating:
(205)
Avg. Download Speed
25 Mbps
AT&T offers Fixed Wireless service to 6.4% of Grant County homes. Across the county, AT&T Fixed Wireless is the only type of service available from the company, with speeds up to 25 Mbps
Midco Fixed Wireless in Grant County, SD
Availability:
3.5%
Customer Rating:
(5)
Avg. Download Speed
100 Mbps
Midco offers Fixed Wireless service to 3.5% of Grant County homes. Across the county, Midco Fixed Wireless has speeds up to 100 Mbps
Which Cable Internet Providers are Available in Grant County?
Midco Cable in Grant County, SD
Availability:
53.9%
Customer Rating:
(27)
Avg. Download Speed
1,924 Mbps
Midco offers Cable service to 53.9% of Grant County homes. Across the county, Midco Cable has speeds up to 1,924 Mbps, with speeds from 1,250 Mpbs up to 2,000 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 60 and as high as 1,000, with an average of 791 Mbps throughout the county. Midco Cable is rated about the same as other types of internet service available in Grant County from Midco in terms of customer satisfaction.
Which DSL Internet Providers are Available in Grant County?
CenturyLink DSL in Grant County, SD
Availability:
59.6%
Customer Rating:
(120)
Avg. Download Speed
22 Mbps
CenturyLink offers DSL service to 59.6% of Grant County homes. Across the county, CenturyLink DSL is the only type of service available from the company, with speeds up to 22 Mbps, with speeds from 10 Mpbs up to 60 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 1.0 and as high as 5.0, with an average of 1.8 Mbps throughout the county.
Customer Reviews for Internet Service Providers in South Dakota
Customer Reviews
A Big Stone City, SD Customer
RC Technologies Fiber
January 16, 2025 Symmetric bandwidth should be more of a consideration for service providers. Not everyone needs a faster upload bandwidth, but for some it is a luxury feature. A feature that someone would be willing to pay more for if presented with the option.
Danielle D.
ITC Fiber
October 01, 2024 Overall, I am happy with our internet provider. Our internet is typically fast and doesn't get jammed up with devices and streaming. We occasionally deal with nasty weather affecting the speed of the internet. Customer service has always been great, which we have only needed maybe 5 times in the last 5 years. Our price has stayed the same since we signed up 5-7 years ago, but our speed has increased free of charge. Our range can be a challenge as we would like to install cameras around our property and adding units or satellites is too expensive for us at this time. We are lucky to have a technician in our tiny town, so if we need someone the response time is fast and personable. We have no intentions of switching providers, even if prices were lower with a competitor.
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.
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Which ISP Should You Choose in Grant County?
The right ISP for you depends upon your needs, but in general we can make the following suggestions:
- The best all-around internet service provider in Grant County is ITC.
- The fastest internet provider should be Midco. Considering speed for the money and reliability in speeds, Interstate Telecommunications Cooperative may be a better choice based on real-world local customer feedback.
- The most affordable internet provider in Grant County is Verizon.
- Viasat, Interstate Telecommunications Cooperative, and HughesNet has the broadest coverage in Grant County, available to 89.7% 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.