In Union County there are 3 residential DSL providers covering 67.69% of the county. The average home can get speeds up to 45 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 Union County, SD.
To see availability maps for all providers including fiber, cable, DSL, and more in Union County, SD please click below.
Union County, SD Availability Maps
DSL Internet Service Providers in Union 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 Union County are not shown.
Union 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
Where in Union County is DSL internet available?
DSL Internet Availability Key
DSL is available in 67.69% of Union County. Areas in green have DSL internet service, where areas in yellow or red may not. The most widely available provider is Centurylink. Call one of the companies with service in Union County above to see who has service at your home.
How fast is DSL internet in Union County?
The map below shows maximum DSL internet speeds by area in Union County.
DSL Internet Speed Key
The average Union County home can get up to 45 Mbps on their DSL internet plan. The fastest DSL download speed in the county is 100 Mbps, which 17.80% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 27.03% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in Union County.
DSL internet speeds tend to be faster in the southeast parts of Union County, and slower in the northwest areas of the county.
Is DSL the fastest internet I can get in Union County?
The fastest internet for you may vary based on where in Union County you live. In general, fiber competes most often with DSL in the county.
- Fiber is the fastest internet type for 49.69% of Union County homes.
- Cable is fastest for 49.27% 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 Union County homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Union County, along with details on where in Union County and at what speeds.
Centurylink DSL in Union County, SD
Centurylink DSL coverage
About 52.30%, or 8,792 people, have Centurylink DSL internet available to them in the county. The company covers the southeast, south, central, west, and southwest Union County area. Centurylink is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of Union County.
Centurylink DSL download speeds
Centurylink is below average when comparing download speeds to all other internet providers in Union County. Versus other DSL providers in the area, Centurylink DSL is the fastest. There are 5 different maximum speeds throughout Union County. The fastest plan anyone in Union County can order from Centurylink goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for Union County customers is up to 54 Mbps.
Show all download speeds
- 34.0% up to 100.0 Mbps
- 3.9% up to 80.0 Mbps
- 5.0% up to 60.0 Mbps
- 26.7% up to 40.0 Mbps
- 30.3% up to 10.0 Mbps
Centurylink DSL upload speeds
In Union County 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 Union County DSL providers. Centurylink offers 4 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 Union County 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 5.2 Mbps.
Show all upload speeds
- 38.0% up to 10.0 Mbps
- 5.2% up to 5.0 Mbps
- 26.6% up to 3.0 Mbps
- 30.3% up to 1.0 Mbps
Bluepeak DSL in Union County, SD
Bluepeak DSL coverage
About 14.25%, or 2,395 people, have Bluepeak DSL internet available to them in the county. The company covers the northwest, west, north, and central Union County area. Bluepeak is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Union County.
Bluepeak DSL download speeds
Bluepeak is the slowest when comparing download speeds to all other internet providers in Union County. Versus other DSL providers in the area, Bluepeak DSL is the slowest. There are no different maximum speeds throughout Union County. The fastest plan anyone in Union County can order from Bluepeak goes up to 10 Mbps, and all Union County customers can get this speed.
Show all download speeds
- 100.0% up to 10.0 Mbps
Bluepeak DSL upload speeds
In Union County download speeds tend to be faster than than upload speeds for Bluepeak DSL. Compared to other ISPs, Bluepeak is the slowest where upload speeds are concerned, and the slowest compared to other Union County DSL providers. Bluepeak offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Union County is up to 1.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1.0 Mbps
Long Lines DSL in Union County, SD
Long Lines DSL coverage
About 4.73%, or 795 people, have Long Lines DSL internet available to them in the county. The company covers the southeast Union County area. Long Lines is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Union County.
Long Lines DSL download speeds
Long Lines is below average when comparing download speeds to all other internet providers in Union County. Versus other DSL providers in the area, Long Lines DSL is average. There are no different maximum speeds throughout Union County. The fastest plan anyone in Union County can order from Long Lines goes up to 25 Mbps, and all Union County customers can get this speed.
Show all download speeds
- 100.0% up to 25.0 Mbps
Long Lines DSL upload speeds
In Union County download speeds tend to be faster than than upload speeds for Long Lines DSL. Compared to other ISPs, Long Lines is below average where upload speeds are concerned, and average compared to other Union County DSL providers. Long Lines offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Union County is up to 3.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 3.0 Mbps
Union County DSL by Area
This information is most helpful to those looking for homes or considering moving to Union County or any of the areas nearby.
How does DSL internet in Union County compare to the rest of South Dakota?
DSL internet speeds in Union County are much faster versus the average speeds in South Dakota: 0.00 Mbps in South Dakota versus 45 Mbps in the county. The state has similar DSL availability compared to the county. Average DSL coverage in South Dakota is 0.00% versus 67.69% in Union County.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Union County 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 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
- Plymouth County, IA: less DSL coverage, slower speeds
- Cedar County, NE: less DSL coverage, slower speeds
- Cherokee County, IA: less DSL coverage, slower speeds
- Knox County, NE: less DSL coverage, slower speeds
- Buena Vista County, IA: more DSL coverage, slower speeds
- Pocahontas County, IA: less DSL coverage, faster speeds
- Humboldt County, IA: more DSL coverage, slower speeds
- Wright County, IA: more DSL coverage, slower speeds
- Rock County, NE: more DSL coverage, slower speeds
- Brown County, NE: more DSL coverage, slower speeds
Counties with Similar Populations
- Jefferson County, MT: more DSL coverage, slower speeds
- Jackson County, WI: more DSL coverage, faster speeds
- Jackson Parish, LA: less DSL coverage, slower speeds
- Jasper County, GA: more DSL coverage, faster speeds
- Jasper County, IL: more DSL coverage, slower speeds
- Jasper County, MS: more DSL coverage, slower speeds
- Jay County, IN: more DSL coverage, slower speeds
- Jayuya Municipio, PR: less DSL coverage, slower speeds
- Jeff Davis County, GA: less DSL coverage, slower speeds
- Jefferson County, FL: more DSL coverage, faster speeds