In 58321 there are 5 residential internet providers covering 95.17% of the zip. The average home can get speeds up to 1,326 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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5 Internet Service Providers in 58321
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 58321 are not shown.
58321 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 58321
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.
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Internet service is available in 95.17% of 58321. 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 Polar Communications. Now you can call companies in 58321 with more confidence that they might be available.
How fast are internet speeds in 58321?
The map below shows maximum internet speeds by area in 58321.
Internet Speed Key
The average 58321 home can get up to 1,326 Mbps on their internet plan. For most people, the fastest download speed in the zip is 10,000 Mbps, which 3.45% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 91.72% of homes can only purchase plans up to 1,000 Mbps. See the internet provider details below for info about their speed and coverage in 58321.
Internet speeds tend to be faster in the west parts of 58321, and slower in the central areas of the zip.
What type of internet should I choose in 58321?
The fastest internet for you may vary based on where in 58321 you live. If speed is your main concern, fiber will be the fastest internet in the zip.
- Fiber is the fastest internet type for 95.17% of 58321 homes.
- Cable is fastest for less than 1% of the zip.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for less than 1%.
- Satellite internet may be the only option for 4.83% of 58321 homes.
Internet Market Health in 58321
Internet Competition Key
The map shows how competitive the 58321 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 58321 based on what connections the average home has availabile:
- Average number of internet service providers to a home: 1.1 (very unhealthy)
- Average types of service (fiber, cable, DSL, etc): 1.1 (very unhealthy)
- Average providers with broadband (25 Mbps+) speeds: 1.1 (very unhealthy)
Overall, competition is very unhealthy.
58321 internet customers have the ability to buy internet service from 1 to 2 different providers, depending on where they live. For different types of service, 58321 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 zip.
When it comes to broadband download speeds faster than 25 Mbps, the situation is similar. 58321 internet customers who want faster speeds have between 1 and 2 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, 58321 badly needs improvement.
TV & Internet Providers in Depth
Below you'll find which TV and internet providers offer service in 58321, along with details on where in 58321 and at what speeds.
Polar Communications Fiber in 58321, ND
Polar Communications fiber coverage
About 91.72%, or 133 people, have Polar Communications fiber internet available to them in the zip. The company covers the entire 58321 area. Polar Communications is an average-sized internet service provider internet service providers in the US, with internet service available in most of 58321.
Polar Communications fiber download speeds
Polar Communications is below average when comparing download speeds to all other internet providers in 58321. Versus other fiber providers in the area, Polar Communications fiber is the slowest. There are no different maximum speeds throughout 58321. The fastest plan anyone in 58321 can order from Polar Communications goes up to 1,000 Mbps, and all 58321 customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Polar Communications fiber upload speeds
In 58321 download speeds tend to be equal to than upload speeds for Polar Communications fiber. Compared to other ISPs, Polar Communications is below average where upload speeds are concerned, and the slowest compared to other 58321 fiber providers. Polar Communications offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 58321 is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
NDTC Fiber in 58321, ND
NDTC fiber coverage
About 3.45%, or 5 people, have NDTC fiber internet available to them in the zip. The company covers the west 58321 area. NDTC is an average-sized internet service provider internet service providers in the US, with internet service available in a very small piece of 58321.
NDTC fiber download speeds
NDTC is the fastest when comparing download speeds to all other internet providers in 58321. Versus other fiber providers in the area, NDTC fiber is the fastest. There are no different maximum speeds throughout 58321. The fastest plan anyone in 58321 can order from NDTC goes up to 10,000 Mbps, and all 58321 customers can get this speed.
Show all download speeds
- 100.0% up to 10,000.0 Mbps
NDTC fiber upload speeds
In 58321 download speeds tend to be equal to than upload speeds for NDTC fiber. Compared to other ISPs, NDTC is the fastest where upload speeds are concerned, and the fastest compared to other 58321 fiber providers. NDTC offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 58321 is up to 10,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 10,000.0 Mbps
T-Mobile Home Internet Fixed Wireless in 58321, ND
T-Mobile Home Internet fixed wireless coverage
About 6.90%, or 10 people, have T-Mobile Home Internet fixed wireless internet available to them in the zip. The company covers the southwest, west, south, and central 58321 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 very small piece of 58321.
T-Mobile Home Internet fixed wireless download speeds
T-Mobile Home Internet is the slowest when comparing download speeds to all other internet providers in 58321. Versus other fixed wireless providers in the area, T-Mobile Home Internet fixed wireless is the fastest. There are 2 different maximum speeds throughout 58321. The fastest plan anyone in 58321 can order from T-Mobile Home Internet goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the zip-wide average maximum speed for 58321 customers is up to 33 Mbps.
Show all download speeds
- 10.0% up to 100.0 Mbps
- 90.0% up to 25.0 Mbps
T-Mobile Home Internet fixed wireless upload speeds
In 58321 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 the slowest where upload speeds are concerned, and the fastest compared to other 58321 fixed wireless providers. T-Mobile Home Internet offers 2 different upload speeds across the zip, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in 58321 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 4.7 Mbps.
Show all upload speeds
- 10.0% up to 20.0 Mbps
- 90.0% up to 3.0 Mbps
58321 Internet by Area
This information is most helpful to those looking for homes or considering moving to 58321 or any of the areas nearby.
How does internet in 58321 compare to the rest of North Dakota?
Internet speeds in 58321 are slower versus the average speeds in North Dakota: 2,404 Mbps in North Dakota versus 1,326 Mbps in the zip. The state has similar internet availability compared to the zip. Average internet coverage in North Dakota is 97.05% versus 95.17% in 58321.
What zip codes have widespread internet?
Internet coverage varies by zip code and neighborhood. Some examples in or around 58321 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 zip codes?
Below are zip codes nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Zip Codes
- 58345, ND: more internet coverage, slower speeds
- 58250, ND: more internet coverage, slower speeds
- 58224, ND: more internet coverage, slower speeds
- 58231, ND: more internet coverage, slower speeds
- 58382, ND: less internet coverage, faster speeds
- 58301, ND: more internet coverage, faster speeds
- 58270, ND: more internet coverage, slower speeds
- 58273, ND: more internet coverage, slower speeds
- 58244, ND: more internet coverage, slower speeds
- 58362, ND: more internet coverage, faster speeds
Zip Codes with Similar Populations
- 75856, TX: more internet coverage, slower speeds
- 43531, OH: more internet coverage, slower speeds
- 43717, OH: more internet coverage, slower speeds
- 44640, OH: more internet coverage, slower speeds
- 44670, OH: more internet coverage, slower speeds
- 47361, IN: more internet coverage, slower speeds
- 47982, IN: more internet coverage, slower speeds
- 49627, MI: more internet coverage, slower speeds
- 49873, MI: less internet coverage, slower speeds
- 49918, MI: less internet coverage, slower speeds