In Sulphur there are 11 residential internet providers covering 100.00% of the city. The average home can get speeds up to 2,211 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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11 Internet Service Providers in Sulphur
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 Sulphur are not shown.
Sulphur 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 Sulphur
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 100.00% of Sulphur. 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 Midco. Now you can call companies in Sulphur with more confidence that they might be available.
How fast are internet speeds in Sulphur?
The map below shows maximum internet speeds by area in Sulphur.
Internet Speed Key
The average Sulphur home can get up to 2,211 Mbps on their internet plan. For most people, the fastest download speed in the city is 5,000 Mbps, which 28.81% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 12.61% of homes can only purchase plans up to 300 Mbps. See the internet provider details below for info about their speed and coverage in Sulphur.
Internet speeds tend to be faster in the northeast parts of Sulphur, and slower in the central areas of the city.
What type of internet should I choose in Sulphur?
The fastest internet for you may vary based on where in Sulphur you live. If speed is your main concern, cable will be the fastest internet in the city.
- Fiber is the fastest internet type for 28.81% of Sulphur homes.
- Cable is fastest for 58.58% of the city.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 12.61%.
- Satellite internet may be the only option for less than 1% of Sulphur homes.
Internet Market Health in Sulphur
Internet Competition Key
The map shows how competitive the Sulphur 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 Sulphur based on what connections the average home has availabile:
- Average number of internet service providers to a home: 7.8 (very healthy)
- Average types of service (fiber, cable, DSL, etc): 3.1 (very healthy)
- Average providers with broadband (25 Mbps+) speeds: 7.8 (very healthy)
Overall, competition is very healthy.
Sulphur internet customers have the ability to buy internet service from 6 to 9 different providers, depending on where they live. For different types of service, Sulphur homes have between 1 and 4 options. The type(s) of service available are fixed wireless, dsl, cable, and fiber, though these may vary depending on the region within the city.
When it comes to broadband download speeds faster than 25 Mbps, the situation is worse. Sulphur internet customers who want faster speeds have between 6 and 9 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, Sulphur is doing quite well.
TV & Internet Providers in Depth
Below you'll find which TV and internet providers offer service in Sulphur, along with details on where in Sulphur and at what speeds.
Centurylink DSL in Sulphur, SD
Centurylink DSL coverage
About 93.75%, or 885 people, have Centurylink DSL internet available to them in the city. The company covers the entire Sulphur area. Centurylink is one of the largest internet service providers internet service providers in the US, with internet service available in most of Sulphur.
Centurylink DSL download speeds
Centurylink is below average when comparing download speeds to all other internet providers in Sulphur. Versus other DSL providers in the area, Centurylink DSL is the fastest. There are 3 different maximum speeds throughout Sulphur. The fastest plan anyone in Sulphur can order from Centurylink goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Sulphur customers is up to 62 Mbps.
Show all download speeds
- 37.5% up to 100.0 Mbps
- 60.3% up to 40.0 Mbps
- 2.1% up to 10.0 Mbps
Centurylink DSL upload speeds
In Sulphur download speeds tend to be faster than than upload speeds for Centurylink DSL. Compared to other ISPs, Centurylink is below average where upload speeds are concerned, and the fastest compared to other Sulphur DSL providers. Centurylink offers 3 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Sulphur is up to 10 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Centurylink customers can get speeds up to 5.6 Mbps.
Show all upload speeds
- 37.5% up to 10.0 Mbps
- 60.3% up to 3.0 Mbps
- 2.1% up to 1.0 Mbps
Midco Cable in Sulphur, SD
Midco cable coverage
About 87.39%, or 825 people, have Midco cable internet available to them in the city. The company covers the entire Sulphur area. Midco is a large internet service provider internet service providers in the US, with internet service available in most of Sulphur.
Midco cable download speeds
Midco is above average when comparing download speeds to all other internet providers in Sulphur. Versus other cable providers in the area, Midco cable is the fastest. There are 2 different maximum speeds throughout Sulphur. The fastest plan anyone in Sulphur can order from Midco goes up to 2,000 Mbps, the slowest package only goes up to 1,250 Mbps, and the city-wide average maximum speed for Sulphur customers is up to 1,497 Mbps.
Show all download speeds
- 33.0% up to 2,000.0 Mbps
- 67.0% up to 1,250.0 Mbps
Midco cable upload speeds
In Sulphur download speeds tend to be faster than than upload speeds for Midco cable. Compared to other ISPs, Midco is below average where upload speeds are concerned, and the fastest compared to other Sulphur cable providers. Midco offers 2 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Sulphur is up to 350 Mbps. Some customers have slower plan choices, which only go up to 60 Mbps. On average, Midco customers can get speeds up to 156 Mbps.
Show all upload speeds
- 33.0% up to 350.0 Mbps
- 67.0% up to 60.0 Mbps
Bluepeak Cable in Sulphur, SD
Bluepeak cable coverage
About 59.64%, or 563 people, have Bluepeak cable internet available to them in the city. The company covers the central and northeast Sulphur area. Bluepeak is a large internet service provider internet service providers in the US, with internet service available in a majority of Sulphur.
Bluepeak cable download speeds
Bluepeak is above average when comparing download speeds to all other internet providers in Sulphur. Versus other cable providers in the area, Bluepeak cable is the slowest. There are no different maximum speeds throughout Sulphur. The fastest plan anyone in Sulphur can order from Bluepeak goes up to 1,000 Mbps, and all Sulphur customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Bluepeak cable upload speeds
In Sulphur download speeds tend to be faster than than upload speeds for Bluepeak cable. Compared to other ISPs, Bluepeak is below average where upload speeds are concerned, and the slowest compared to other Sulphur cable providers. Bluepeak offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Sulphur is up to 30 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 30.0 Mbps
Midco Fiber in Sulphur, SD
Midco fiber coverage
About 28.81%, or 272 people, have Midco fiber internet available to them in the city. The company covers the northeast Sulphur area. Midco is a large internet service provider internet service providers in the US, with internet service available in a small portion of Sulphur.
Midco fiber download speeds
Midco is the fastest when comparing download speeds to all other internet providers in Sulphur. Versus other fiber providers in the area, Midco fiber is the fastest. There are no different maximum speeds throughout Sulphur. The fastest plan anyone in Sulphur can order from Midco goes up to 5,000 Mbps, and all Sulphur customers can get this speed.
Show all download speeds
- 100.0% up to 5,000.0 Mbps
Midco fiber upload speeds
In Sulphur download speeds tend to be equal to than upload speeds for Midco fiber. Compared to other ISPs, Midco is the fastest where upload speeds are concerned, and the fastest compared to other Sulphur fiber providers. Midco offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Sulphur is up to 5,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 5,000.0 Mbps
Verizon Fixed Wireless in Sulphur, SD
Verizon fixed wireless coverage
About 100.00%, or 944 people, have Verizon fixed wireless internet available to them in the city. The company covers the entire Sulphur area. Verizon is one of the largest internet service providers internet service providers in the US, with internet service available in every corner of Sulphur.
Verizon fixed wireless download speeds
Verizon is below average when comparing download speeds to all other internet providers in Sulphur. Versus other fixed wireless providers in the area, Verizon fixed wireless is the fastest. There are no different maximum speeds throughout Sulphur. The fastest plan anyone in Sulphur can order from Verizon goes up to 300 Mbps, and all Sulphur customers can get this speed.
Show all download speeds
- 100.0% up to 300.0 Mbps
Verizon fixed wireless upload speeds
In Sulphur 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 Sulphur fixed wireless providers. Verizon offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Sulphur is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
T-Mobile Home Internet Fixed Wireless in Sulphur, SD
T-Mobile Home Internet fixed wireless coverage
About 100.00%, or 944 people, have T-Mobile Home Internet fixed wireless internet available to them in the city. The company covers the entire Sulphur area. T-Mobile Home Internet is one of the largest internet service providers internet service providers in the US, with internet service available in every corner of Sulphur.
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 Sulphur. Versus other fixed wireless providers in the area, T-Mobile Home Internet fixed wireless is below average. There are 2 different maximum speeds throughout Sulphur. The fastest plan anyone in Sulphur can order from T-Mobile Home Internet goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the city-wide average maximum speed for Sulphur customers is up to 46 Mbps.
Show all download speeds
- 27.8% up to 100.0 Mbps
- 72.2% up to 25.0 Mbps
T-Mobile Home Internet fixed wireless upload speeds
In Sulphur 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 average compared to other Sulphur fixed wireless providers. T-Mobile Home Internet offers 2 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Sulphur 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 7.7 Mbps.
Show all upload speeds
- 27.8% up to 20.0 Mbps
- 72.2% up to 3.0 Mbps
wispwest.net Fixed Wireless in Sulphur, SD
wispwest.net fixed wireless coverage
About 100.00%, or 944 people, have wispwest.net fixed wireless internet available to them in the city. The company covers the entire Sulphur area. wispwest.net is a large internet service provider internet service providers in the US, with internet service available in every corner of Sulphur.
wispwest.net fixed wireless download speeds
wispwest.net is below average when comparing download speeds to all other internet providers in Sulphur. Versus other fixed wireless providers in the area, wispwest.net fixed wireless is below average. There are 3 different maximum speeds throughout Sulphur. The fastest plan anyone in Sulphur can order from wispwest.net goes up to 100 Mbps, the slowest package only goes up to 35 Mbps, and the city-wide average maximum speed for Sulphur customers is up to 44 Mbps.
Show all download speeds
- 6.4% up to 100.0 Mbps
- 35.1% up to 50.0 Mbps
- 58.6% up to 35.0 Mbps
wispwest.net fixed wireless upload speeds
In Sulphur 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 Sulphur fixed wireless providers. wispwest.net offers 4 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Sulphur is up to 20 Mbps. Some customers have slower plan choices, which only go up to 5.0 Mbps. On average, wispwest.net customers can get speeds up to 8.6 Mbps.
Show all upload speeds
- 6.4% up to 20.0 Mbps
- 35.1% up to 10.0 Mbps
- 30.8% up to 8.0 Mbps
- 27.8% up to 5.0 Mbps
EarthLink Fixed Wireless in Sulphur, SD
EarthLink fixed wireless coverage
About 100.00%, or 944 people, have EarthLink fixed wireless internet available to them in the city. The company covers the entire Sulphur area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in every corner of Sulphur.
EarthLink fixed wireless download speeds
EarthLink is below average when comparing download speeds to all other internet providers in Sulphur. Versus other fixed wireless providers in the area, EarthLink fixed wireless is below average. There are 2 different maximum speeds throughout Sulphur. The fastest plan anyone in Sulphur can order from EarthLink goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the city-wide average maximum speed for Sulphur customers is up to 44 Mbps.
Show all download speeds
- 25.7% up to 100.0 Mbps
- 74.3% up to 25.0 Mbps
EarthLink fixed wireless upload speeds
In Sulphur download speeds tend to be faster than than upload speeds for EarthLink fixed wireless. Compared to other ISPs, EarthLink is below average where upload speeds are concerned, and average compared to other Sulphur fixed wireless providers. EarthLink offers 2 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Sulphur is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, EarthLink customers can get speeds up to 7.4 Mbps.
Show all upload speeds
- 25.7% up to 20.0 Mbps
- 74.3% up to 3.0 Mbps
AT&T Fixed Wireless in Sulphur, SD
AT&T fixed wireless coverage
About 100.00%, or 944 people, have AT&T fixed wireless internet available to them in the city. The company covers the entire Sulphur area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in every corner of Sulphur.
AT&T fixed wireless download speeds
AT&T is below average when comparing download speeds to all other internet providers in Sulphur. Versus other fixed wireless providers in the area, AT&T fixed wireless is below average. There are 2 different maximum speeds throughout Sulphur. The fastest plan anyone in Sulphur can order from AT&T goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the city-wide average maximum speed for Sulphur customers is up to 44 Mbps.
Show all download speeds
- 25.7% up to 100.0 Mbps
- 74.3% up to 25.0 Mbps
AT&T fixed wireless upload speeds
In Sulphur download speeds tend to be faster than than upload speeds for AT&T fixed wireless. Compared to other ISPs, AT&T is below average where upload speeds are concerned, and average compared to other Sulphur fixed wireless providers. AT&T offers 2 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Sulphur is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, AT&T customers can get speeds up to 7.4 Mbps.
Show all upload speeds
- 25.7% up to 20.0 Mbps
- 74.3% up to 3.0 Mbps
Western Communications Fixed Wireless in Sulphur, SD
Western Communications fixed wireless coverage
About 14.62%, or 138 people, have Western Communications fixed wireless internet available to them in the city. The company covers the central and northeast Sulphur area. Western Communications is a small internet service provider internet service providers in the US, with internet service available in a very small piece of Sulphur.
Western Communications fixed wireless download speeds
Western Communications is the slowest when comparing download speeds to all other internet providers in Sulphur. Versus other fixed wireless providers in the area, Western Communications fixed wireless is the slowest. There are no different maximum speeds throughout Sulphur. The fastest plan anyone in Sulphur can order from Western Communications goes up to 30 Mbps, and all Sulphur customers can get this speed.
Show all download speeds
- 100.0% up to 30.0 Mbps
Western Communications fixed wireless upload speeds
In Sulphur download speeds tend to be faster than than upload speeds for Western Communications fixed wireless. Compared to other ISPs, Western Communications is the slowest where upload speeds are concerned, and the slowest compared to other Sulphur fixed wireless providers. Western Communications offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Sulphur is up to 5.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 5.0 Mbps
Sulphur Internet by Area
This information is most helpful to those looking for homes or considering moving to Sulphur or any of the areas nearby.
How does internet in Sulphur compare to the rest of South Dakota?
Internet speeds in Sulphur are faster versus the average speeds in South Dakota: 1,953 Mbps in South Dakota versus 2,211 Mbps in the city. The state has similar internet availability compared to the city. Average internet coverage in South Dakota is 98.12% versus 100.00% in Sulphur.
What zip codes have widespread internet?
Internet coverage varies by zip code and neighborhood. Some examples in or around Sulphur 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 cities?
Below are cities nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Cities
- Rapid City, SD: less internet coverage, slower speeds
- Black Hawk, SD: less internet coverage, slower speeds
- Ashland Heights, SD: equal internet coverage, faster speeds
- Rapid Valley, SD: less internet coverage, slower speeds
- Summerset, SD: less internet coverage, slower speeds
- Box Elder, SD: less internet coverage, faster speeds
- Ellsworth Afb, SD: less internet coverage, faster speeds
- Piedmont, SD: less internet coverage, faster speeds
- Johnson Siding, SD: less internet coverage, slower speeds
- Bethlehem, SD: less internet coverage, slower speeds
Cities with Similar Populations
- Escabosa, NM: equal internet coverage, slower speeds
- Thrall, WA: less internet coverage, slower speeds
- Thompson, PA: less internet coverage, faster speeds
- Telephone, TX: less internet coverage, slower speeds
- Tatnic, ME: equal internet coverage, slower speeds
- Summerville, OR: less internet coverage, slower speeds
- Fort Garland, CO: less internet coverage, faster speeds
- Footville, WI: equal internet coverage, slower speeds
- Fallsburg, KY: equal internet coverage, slower speeds
- Fall River Mills, CA: less internet coverage, slower speeds