In Sully County there are 8 residential internet providers covering 99.59% of the county. The average home can get speeds up to 1,000 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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8 Internet Service Providers in Sully County
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 Sully County are not shown.
Sully County 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 Sully County
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.
Please note some providers will take longer to load than others
Internet service is available in 99.59% of Sully County. 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 venture communications. Now you can call companies in Sully County with more confidence that they might be available.
How fast are internet speeds in Sully County?
The map below shows maximum internet speeds by area in Sully County.
Internet Speed Key
The average Sully County home can get up to 1,000 Mbps on their internet plan. For most people, the fastest download speed in the county is 1,000 Mbps, which 99.59% of residents can get.
What type of internet should I choose in Sully County?
The fastest internet for you may vary based on where in Sully County you live. If speed is your main concern, fiber will be the fastest internet in the county.
- Fiber is the fastest internet type for 99.59% of Sully County homes.
- Cable is fastest for less than 1% of the county.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for less than 1%.
- Satellite internet may be the only option for less than 1% of Sully County homes.
Internet Market Health in Sully County
Internet Competition Key
The map shows how competitive the Sully County 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 Sully County based on what connections the average home has availabile:
- Average number of internet service providers to a home: 2.4 (very unhealthy)
- Average types of service (fiber, cable, DSL, etc): 1.8 (very unhealthy)
- Average providers with broadband (25 Mbps+) speeds: 2.4 (very unhealthy)
Overall, competition is very unhealthy.
Sully County internet customers have the ability to buy internet service from 1 to 3 different providers, depending on where they live. For different types of service, Sully County homes have between 1 and 2 options. The type(s) of service available are fiber and fixed wireless, though these may vary depending on the region within the county.
When it comes to broadband download speeds faster than 25 Mbps, the situation is similar. Sully County internet customers who want faster speeds have between 1 and 3 choices 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, Sully County badly needs improvement.
TV & Internet Providers in Depth
Below you'll find which TV and internet providers offer service in Sully County, along with details on where in Sully County and at what speeds.
venture communications Fiber in Sully County, SD
venture communications fiber coverage
About 99.59%, or 1,440 people, have venture communications fiber internet available to them in the county. The company covers the entire Sully County area. venture communications is an average-sized internet service provider internet service providers in the US, with internet service available in most of Sully County.
venture communications fiber download speeds
venture communications is the fastest when comparing download speeds to all other internet providers in Sully County. Versus other fiber providers in the area, venture communications fiber is the fastest. There are no different maximum speeds throughout Sully County. The fastest plan anyone in Sully County can order from venture communications goes up to 1,000 Mbps, and all Sully County customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
venture communications fiber upload speeds
In Sully County download speeds tend to be equal to than upload speeds for venture communications fiber. Compared to other ISPs, venture communications is the fastest where upload speeds are concerned, and the fastest compared to other Sully County fiber providers. venture communications offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Sully County is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
wispwest.net Fixed Wireless in Sully County, SD
wispwest.net fixed wireless coverage
About 64.25%, or 929 people, have wispwest.net fixed wireless internet available to them in the county. The company covers the central, southwest, north, northeast, west, east, south, and northwest Sully County area. wispwest.net is a large internet service provider internet service providers in the US, with internet service available in a majority of Sully County.
wispwest.net fixed wireless download speeds
wispwest.net is below average when comparing download speeds to all other internet providers in Sully County. Versus other fixed wireless providers in the area, wispwest.net fixed wireless is below average. There are 3 different maximum speeds throughout Sully County. The fastest plan anyone in Sully County can order from wispwest.net goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the county-wide average maximum speed for Sully County customers is up to 53 Mbps.
Show all download speeds
- 6.9% up to 100.0 Mbps
- 90.2% up to 50.0 Mbps
- 2.9% up to 25.0 Mbps
wispwest.net fixed wireless upload speeds
In Sully County download speeds tend to be faster than than upload speeds for wispwest.net fixed wireless. Compared to other ISPs, wispwest.net is below average where upload speeds are concerned, and average compared to other Sully County fixed wireless providers. wispwest.net offers 3 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Sully County is up to 20 Mbps. Some customers have slower plan choices, which only go up to 8.0 Mbps. On average, wispwest.net customers can get speeds up to 11 Mbps.
Show all upload speeds
- 6.9% up to 20.0 Mbps
- 90.2% up to 10.0 Mbps
- 2.9% up to 8.0 Mbps
T-Mobile Home Internet Fixed Wireless in Sully County, SD
T-Mobile Home Internet fixed wireless coverage
About 56.43%, or 816 people, have T-Mobile Home Internet fixed wireless internet available to them in the county. The company covers the central, west, north, northeast, east, northwest, and south Sully County area. T-Mobile Home Internet is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of Sully County.
T-Mobile Home Internet fixed wireless download speeds
T-Mobile Home Internet is below average when comparing download speeds to all other internet providers in Sully County. Versus other fixed wireless providers in the area, T-Mobile Home Internet fixed wireless is average. There are 2 different maximum speeds throughout Sully County. The fastest plan anyone in Sully County can order from T-Mobile Home Internet goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the county-wide average maximum speed for Sully County customers is up to 94 Mbps.
Show all download speeds
- 92.2% up to 100.0 Mbps
- 7.8% up to 25.0 Mbps
T-Mobile Home Internet fixed wireless upload speeds
In Sully County download speeds tend to be faster than than upload speeds for T-Mobile Home Internet fixed wireless. Compared to other ISPs, T-Mobile Home Internet is below average where upload speeds are concerned, and above average compared to other Sully County fixed wireless providers. T-Mobile Home Internet offers 2 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Sully County is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, T-Mobile Home Internet customers can get speeds up to 19 Mbps.
Show all upload speeds
- 92.2% up to 20.0 Mbps
- 7.8% up to 3.0 Mbps
EarthLink Fixed Wireless in Sully County, SD
EarthLink fixed wireless coverage
About 8.64%, or 125 people, have EarthLink fixed wireless internet available to them in the county. The company covers the northwest and north Sully County area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Sully County.
EarthLink fixed wireless download speeds
EarthLink is one of the slowest when comparing download speeds to all other internet providers in Sully County. Versus other fixed wireless providers in the area, EarthLink fixed wireless is one of the slowest. There are no different maximum speeds throughout Sully County. The fastest plan anyone in Sully County can order from EarthLink goes up to 25 Mbps, and all Sully County customers can get this speed.
Show all download speeds
- 100.0% up to 25.0 Mbps
EarthLink fixed wireless upload speeds
In Sully County download speeds tend to be faster than than upload speeds for EarthLink fixed wireless. Compared to other ISPs, EarthLink is one of the slowest where upload speeds are concerned, and one of the slowest compared to other Sully County fixed wireless providers. EarthLink offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Sully County is up to 3.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 3.0 Mbps
AT&T Fixed Wireless in Sully County, SD
AT&T fixed wireless coverage
About 8.64%, or 125 people, have AT&T fixed wireless internet available to them in the county. The company covers the northwest and north Sully County area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Sully County.
AT&T fixed wireless download speeds
AT&T is one of the slowest when comparing download speeds to all other internet providers in Sully County. Versus other fixed wireless providers in the area, AT&T fixed wireless is one of the slowest. There are no different maximum speeds throughout Sully County. The fastest plan anyone in Sully County can order from AT&T goes up to 25 Mbps, and all Sully County customers can get this speed.
Show all download speeds
- 100.0% up to 25.0 Mbps
AT&T fixed wireless upload speeds
In Sully County download speeds tend to be faster than than upload speeds for AT&T fixed wireless. Compared to other ISPs, AT&T is one of the slowest where upload speeds are concerned, and one of the slowest compared to other Sully County fixed wireless providers. AT&T offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Sully County is up to 3.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 3.0 Mbps
Verizon Fixed Wireless in Sully County, SD
Verizon fixed wireless coverage
About 6.09%, or 88 people, have Verizon fixed wireless internet available to them in the county. The company covers the southwest Sully County area. Verizon is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Sully County.
Verizon fixed wireless download speeds
Verizon is above average when comparing download speeds to all other internet providers in Sully County. Versus other fixed wireless providers in the area, Verizon fixed wireless is the fastest. There are no different maximum speeds throughout Sully County. The fastest plan anyone in Sully County can order from Verizon goes up to 300 Mbps, and all Sully County customers can get this speed.
Show all download speeds
- 100.0% up to 300.0 Mbps
Verizon fixed wireless upload speeds
In Sully County download speeds tend to be faster than than upload speeds for Verizon fixed wireless. Compared to other ISPs, Verizon is below average where upload speeds are concerned, and the fastest compared to other Sully County fixed wireless providers. Verizon offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Sully County is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
Sully County Internet by Area
This information is most helpful to those looking for homes or considering moving to Sully County or any of the areas nearby.
How does internet in Sully County compare to the rest of South Dakota?
Internet speeds in Sully County are slower versus the average speeds in South Dakota: 1,953 Mbps in South Dakota versus 1,000 Mbps in the county. The state has similar internet availability compared to the county. Average internet coverage in South Dakota is 98.12% versus 99.59% in Sully County.
What zip codes have widespread internet?
Internet coverage varies by zip code and neighborhood. Some examples in or around Sully County 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 counties?
Below are counties nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Counties
- Clark County, SD: less internet coverage, slower speeds
- Hamlin County, SD: more internet coverage, similar speeds
- Deuel County, SD: more internet coverage, faster speeds
- Butte County, SD: more internet coverage, faster speeds
- Yellow Medicine County, MN: more internet coverage, faster speeds
- Renville County, MN: more internet coverage, slower speeds
- McLeod County, MN: more internet coverage, faster speeds
- Carver County, MN: more internet coverage, faster speeds
- Scott County, MN: more internet coverage, faster speeds
- Sheridan County, WY: less internet coverage, faster speeds
Counties with Similar Populations
- Butler County, NE: less internet coverage, slower speeds
- Washita County, OK: less internet coverage, faster speeds
- Washington County, NC: less internet coverage, faster speeds
- Washington County, KS: less internet coverage, slower speeds
- Washington County, ID: less internet coverage, slower speeds
- Washington County, CO: less internet coverage, slower speeds
- Washakie County, WY: less internet coverage, slower speeds
- Warren County, IN: less internet coverage, slower speeds
- Warren County, GA: less internet coverage, faster speeds
- Walworth County, SD: less internet coverage, faster speeds