Best Internet Providers in Grenville, SD
All 6 providers, ranked by coverage, speed and customer ratings
Find internet availability by address in Grenville, SD
Grenville has 6 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 Grenville.
Ranks compare Grenville with the 31,388 US places under 1,000 people, the tiers of our fastest-cities rankings.
The Best Internet in Grenville, SD at a Glance
Grenville Internet Providers, Ranked by Coverage, Speed and Customer Ratings
Venture Communications
Connection
Customer Rating
Fiber
ITC
Connection
Customer Rating
Fiber
EarthLink
Connection
Customer Rating
Fixed Wireless
Verizon
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 Grenville ratings may vary and are shown below.
Who is the Best Internet Provider in Grenville, SD?
Interstate Telecommunications Cooperative is the best internet provider in Grenville based on South Dakota customer satisfaction ratings and reviews. Based on our extensive and unbiased survey, Interstate Telecommunications Cooperative had the best reviews at the local, state, and national levels versus all available providers in Grenville, making it a solid recommendation among providers with reviews. Interstate Telecommunications Cooperative is an option for 47.60% of the city.
Which Providers are Available at my Home in Grenville?
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.
How Grenville Compares to Places Its Size
Grenville's report card score is in the top 45% and its connectivity index is in the top 36%.
| Measure | Grenville | Rank among US places under 1,000 people | Day County | South Dakota | US | Leader |
|---|---|---|---|---|---|---|
| ISP Report Card inputs: what providers offer here | ||||||
| Fiber availability | 100.0% | top 1% | 99.4% | 79.0% | 71.5% | Tied with 6,945 other places at 100.0% |
| Average top speed | 1,000 Mbps | top 38% | 1,130 Mbps | 2,675 Mbps | 3,486 Mbps | Fairmount, TN and Falling Water, TN and 5 more (25,000 Mbps) |
| Providers at a typical address | 1.6 | bottom 9% | 2.3 | 5.8 | 7.1 | Los Prados, PR (15.1) |
| Connectivity index inputs: how much households need and use the internet | ||||||
| People per household | 2.5 | top 40% | 2.3 | 2.5 | 2.7 | Paguate, NM (13.4) |
| Workers who work from home | 16% | top 18% | 12% | 10% | 15% | Boys Town, NE (100%) |
| Homes with a computer, tablet or phone | 84% | bottom 13% | 87% | 94% | 96% | 1,494 places at 100% |
| Homes with internet | 80% | bottom 26% | 84% | 90% | 91% | 370 places at 100% |
| Homes on fiber, cable or DSL | 70% | top 25% | 72% | 76% | 76% | 23 places at 100% |
| More about the households here | ||||||
| Homes with a desktop or laptop | 72% | top 50% | 70% | 78% | 81% | 72 places at 100% |
| Median household income | $66,541 | bottom 44% | $71,254 | $80,420 | $93,246 | 22 places at $250,001 |
| Residents in school (6th grade to college) | 14% | top 28% | 11% | 15% | 16% | University at Buffalo, NY (100%) |
Fiber reaches 100.0% of homes in Grenville, against 99.4% across Day County and 79.0% across South Dakota. Households in Grenville are smaller than the US average (2.5 people against 2.7); 16% of workers work from home (US 15%); and the median household income is $66,541 (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 Grenville
Which Fiber Internet Providers are Available in Grenville?
Venture Communications Fiber in Grenville, SD
Availability:
62.9%
Customer Rating:
(1)
Avg. Download Speed
1,000 Mbps
Venture Communications offers Fiber service to 62.9% of Grenville homes. Across the city, Venture Communications Fiber is the only type of service available from the company, with speeds up to 1,000 Mbps
ITC Fiber in Grenville, SD
Availability:
47.6%
Customer Rating:
(6)
Avg. Download Speed
1,000 Mbps
Interstate Telecommunications Cooperative offers Fiber service to 47.6% of Grenville homes. Across the city, ITC 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 Grenville?
Verizon Fixed Wireless in Grenville, SD
Availability:
20.8%
Customer Rating:
(362)
Avg. Download Speed
115 Mbps
Verizon offers Fixed Wireless service to 20.8% of Grenville homes. Across the city, Verizon Fixed Wireless is the only type of service available from the company, with speeds up to 115 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 11 Mbps throughout the city.
T-Mobile Home Internet Fixed Wireless in Grenville, SD
Availability:
14.0%
Customer Rating:
(342)
Avg. Download Speed
25 Mbps
T-Mobile Home Internet offers Fixed Wireless service to 14.0% of Grenville 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
EarthLink Fixed Wireless in Grenville, SD
Availability:
5.9%
Customer Rating:
(4)
Avg. Download Speed
25 Mbps
EarthLink offers Fixed Wireless service to 5.9% of Grenville homes. Across the city, EarthLink Fixed Wireless is the only type of service available from the company, with speeds up to 25 Mbps
AT&T Fixed Wireless in Grenville, SD
Availability:
5.9%
Customer Rating:
(205)
Avg. Download Speed
25 Mbps
AT&T offers Fixed Wireless service to 5.9% of Grenville homes. Across the city, AT&T 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 Grenville?
According to the most recently submitted data by internet service providers to the FCC, there are currently no cable providers available in Grenville, SD.
Which DSL Internet Providers are Available in Grenville?
According to the most recently submitted data by internet service providers to the FCC, there are currently no DSL providers available in Grenville, SD.
Internet in Grenville by Neighborhood and ZIP Code
Grenville has 1 ZIP code with its own page. Each row links to that place’s page.
Neighborhoods in Grenville
| Neighborhood | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|
ZIP codes in Grenville
| ZIP code | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| 57239 | 275 | 100.0% | 1,000 Mbps | 1.3 | C | 47/100 |
How Grenville Compares to Nearby Places
The 10 places nearest to Grenville that have their own pages are all within 23 miles. Among them, Sisseton has the most homes with fiber (99.4%) and Webster the fewest (99.3%); Grenville has 100.0%.
| Place | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| Grenville (this page) | 542 | 100.0% | 1,000 Mbps | 1.6 | C | 47/100 |
| Sisseton | 5,447 | 99.4% | 1,017 Mbps | 3.2 | C+ | 51/100 |
| Webster | 2,333 | 99.3% | 1,201 Mbps | 2.9 | C+ | 38/100 |
| Waubay | 901 | 99.7% | 1,129 Mbps | 1.8 | C+ | 40/100 |
| Peever | 862 | 95.4% | 1,487 Mbps | 1.9 | C | 43/100 |
| Summit | 496 | 98.2% | 1,493 Mbps | 1.9 | C+ | 49/100 |
| Lake City | 428 | 98.1% | 1,007 Mbps | 1.9 | C | 60/100 |
| Roslyn | 422 | 100.0% | 1,115 Mbps | 1.8 | C+ | 52/100 |
| Eden | 412 | 96.8% | 1,000 Mbps | 1.4 | C- | 60/100 |
| Bristol | 396 | 100.0% | 1,182 Mbps | 2.9 | C+ | 57/100 |
| Ortley | 390 | 99.5% | 1,128 Mbps | 1.8 | C+ | 52/100 |
Who is the Fastest Internet Provider in Grenville?
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, Interstate Telecommunications Cooperative and Venture Communications 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 Grenville
| Venture Communications | 1,000 |
|---|---|
| Interstate Telecommunications Cooperative | 1,000 |
| Verizon | 300 |
| Viasat | 100 |
| HughesNet | 25 |
| T-Mobile Home Internet | 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 Grenville. It takes about 20 seconds and, on a fast line, can move a few hundred MB of data.
Customer Ratings for Grenville Internet Providers
Based on 13 reviews from South Dakota internet customers, Interstate Telecommunications Cooperative is the best internet service provider for Grenville residents. Interstate Telecommunications Cooperative was rated at an average of 4.50 out of 5 in our report for overall customer satisfaction. Venture Communications wins for second-place in South Dakota, with 4.00 out of 5 stars and 62.9% coverage in Grenville.
At a national level, based on 2231 national reviews for any of the providers listed above, Interstate Telecommunications Cooperative is rated higher than any other provider, with a rating of 4.50 out of 5.
Local, State, and National Ratings for all Grenville Internet Providers
The table below shows average customer ratings from customers in Grenville, South Dakota, and customers throughout the country.
| ISP / Tech Type | Grenville Overall | South Dakota Overall | National Overall | For Service | ||
|---|---|---|---|---|---|---|
| ITC |  (0) | (6) | (6) | View Plans | ||
| AT&T | (0) |  (4) | (1051) | View Plans | ||
| Venture Communications | (0) | (1) | (1) | 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 | ||
| Viasat | (0) | (0) |  (12) | View Plans |
Customer Ratings for Internet Provider Speeds in Grenville
Based on data reported by Grenville ISPs to the FCC, the fastest speeds in the city are available through Interstate Telecommunications Cooperative and Venture Communications. These internet providers offer speeds up to 1,000 Mbps in Grenville. Therefore, the average customer can get up to 1,000 Mbps if they’re willing to purchase the fastest subscription tier available at their homes.
Additionally, 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 | Grenville Speed | South Dakota Speed | National Speed | For Service | ||
|---|---|---|---|---|---|---|
| ITC | (0) | (6) | (6) | View Plans | ||
| AT&T | (0) | (4) | (1051) | View Plans | ||
| Venture Communications | (0) | (1) | (1) | 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 | ||
| Viasat | (0) | (0) | (12) | View Plans |
Who is the Cheapest Internet Provider in Grenville?
Of the providers in Grenville, customers rate Venture Communications the best for price. Data comes from customers rating their satisfaction with pricing: in Grenville 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.
Venture Communications is rated 4.00 out of 5 for price, which is higher 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 Grenville, South Dakota, and the United States rated the affordability of their internet service.
Rated Affordability in Grenville
| ISP / Tech Type | Grenville Affordability | South Dakota Affordability | National Affordability | For Service | ||
|---|---|---|---|---|---|---|
| AT&T | (0) | (4) | (1051) | View Plans | ||
| Venture Communications | (0) | (1) | (1) | View Plans | ||
| ITC | (0) | (6) | (6) | 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 | ||
| Viasat | (0) | (0) | (12) | 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 Grenville?
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 Grenville is ITC.
- The fastest internet provider should be Interstate Telecommunications Cooperative and Venture Communications. 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 Grenville is Venture Communications.
- Viasat, Venture Communications, and HughesNet has the broadest coverage in Grenville, available to 62.9% 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.