In Sulphur Springs there are 2 residential DSL providers covering 62.57% of the city. The average home can get speeds up to 48 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.
This page contains all DSL internet providers in Sulphur Springs, IA.
To see availability maps for all providers including fiber, cable, DSL, and more in Sulphur Springs, IA please click below.
Sulphur Springs, IA Availability Maps
DSL Internet Service Providers in Sulphur Springs
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 Springs are not shown.
Sulphur Springs 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
Where in Sulphur Springs is DSL internet available?
DSL Internet Availability Key
DSL is available in 62.57% of Sulphur Springs. Areas in green have DSL internet service, where areas in yellow or red may not. The most widely available provider is Windstream. Call one of the companies with service in Sulphur Springs above to see who has service at your home.
How fast is DSL internet in Sulphur Springs?
The map below shows maximum DSL internet speeds by area in Sulphur Springs.
DSL Internet Speed Key
The average Sulphur Springs home can get up to 48 Mbps on their DSL internet plan. The fastest DSL download speed in the city is 200 Mbps, which 3.29% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 39.22% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in Sulphur Springs.
DSL internet speeds tend to be faster in the south parts of Sulphur Springs, and slower in the southeast areas of the city.
Is DSL the fastest internet I can get in Sulphur Springs?
The fastest internet for you may vary based on where in Sulphur Springs you live. In general, fixed wireless competes most often with DSL in the city.
- Fiber is the fastest internet type for less than 1% of Sulphur Springs homes.
- Cable is fastest for less than 1% of the city.
- DSL is fastest for 1.20%.
- Fixed wireless is fastest for 98.80%.
- Satellite internet may be the only option for less than 1% of Sulphur Springs homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Sulphur Springs, along with details on where in Sulphur Springs and at what speeds.
Windstream DSL in Sulphur Springs, IA
Windstream DSL coverage
About 56.89%, or 190 people, have Windstream DSL internet available to them in the city. The company covers the east, southeast, northeast, central, south, and west Sulphur Springs area. Windstream is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of Sulphur Springs.
Windstream DSL download speeds
Windstream is average when comparing download speeds to all other internet providers in Sulphur Springs. Versus other DSL providers in the area, Windstream DSL is the fastest. There are 3 different maximum speeds throughout Sulphur Springs. The fastest plan anyone in Sulphur Springs can order from Windstream goes up to 200 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Sulphur Springs customers is up to 52 Mbps.
Show all download speeds
- 5.8% up to 200.0 Mbps
- 34.2% up to 100.0 Mbps
- 60.0% up to 10.0 Mbps
Windstream DSL upload speeds
In Sulphur Springs download speeds tend to be faster than than upload speeds for Windstream DSL. Compared to other ISPs, Windstream is average where upload speeds are concerned, and the fastest compared to other Sulphur Springs DSL providers. Windstream 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 Springs is up to 52 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Windstream customers can get speeds up to 15 Mbps.
Show all upload speeds
- 5.8% up to 52.0 Mbps
- 34.2% up to 32.0 Mbps
- 60.0% up to 1.0 Mbps
Centurylink DSL in Sulphur Springs, IA
Centurylink DSL coverage
About 5.69%, or 19 people, have Centurylink DSL internet available to them in the city. The company covers the northwest, west, and southwest Sulphur Springs area. Centurylink is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Sulphur Springs.
Centurylink DSL download speeds
Centurylink is the slowest when comparing download speeds to all other internet providers in Sulphur Springs. Versus other DSL providers in the area, Centurylink DSL is the slowest. There are 2 different maximum speeds throughout Sulphur Springs. The fastest plan anyone in Sulphur Springs can order from Centurylink goes up to 40 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Sulphur Springs customers is up to 13 Mbps.
Show all download speeds
- 10.5% up to 40.0 Mbps
- 89.5% up to 10.0 Mbps
Centurylink DSL upload speeds
In Sulphur Springs download speeds tend to be faster than than upload speeds for Centurylink DSL. Compared to other ISPs, Centurylink is the slowest where upload speeds are concerned, and the slowest compared to other Sulphur Springs DSL providers. Centurylink 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 Springs is up to 3.0 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Centurylink customers can get speeds up to 1.2 Mbps.
Show all upload speeds
- 10.5% up to 3.0 Mbps
- 89.5% up to 1.0 Mbps
Sulphur Springs DSL by Area
This information is most helpful to those looking for homes or considering moving to Sulphur Springs or any of the areas nearby.
How does DSL internet in Sulphur Springs compare to the rest of Iowa?
DSL internet speeds in Sulphur Springs are much faster versus the average speeds in Iowa: 0.00 Mbps in Iowa versus 48 Mbps in the city. The state has similar DSL availability compared to the city. Average DSL coverage in Iowa is 0.00% versus 62.57% in Sulphur Springs.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Sulphur Springs are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does DSL internet 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
- Newell, IA: more DSL coverage, faster speeds
- Lakeside, IA: more DSL coverage, slower speeds
- Juniata, IA: less DSL coverage, slower speeds
- Nemaha, IA: less DSL coverage, slower speeds
- Varina, IA: more DSL coverage, faster speeds
- Storm Lake, IA: more DSL coverage, slower speeds
- Truesdale, IA: less DSL coverage, slower speeds
- Fonda, IA: more DSL coverage, faster speeds
- Albert City, IA: more DSL coverage, faster speeds
- Early, IA: more DSL coverage, faster speeds
Cities with Similar Populations
- Hainesburg, NJ: more DSL coverage, faster speeds
- Henrietta, PA: more DSL coverage, slower speeds
- Henning, IL: more DSL coverage, faster speeds
- Heffron, WI: less DSL coverage, slower speeds
- Healing Springs, NC: more DSL coverage, slower speeds
- Hayward, MO: less DSL coverage, slower speeds
- Havana, MN: less DSL coverage, slower speeds
- Harcuvar, AZ: more DSL coverage, faster speeds
- Hannibal Center, NY: more DSL coverage, slower speeds
- Hanna, OK: more DSL coverage, slower speeds