In Sioux City there are 2 residential DSL providers covering 96.19% of the city. The average home can get speeds up to 31 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 Sioux City, IA.
To see availability maps for all providers including fiber, cable, DSL, and more in Sioux City, IA please click below.
Sioux City, IA Availability Maps
DSL Internet Service Providers in Sioux City
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 Sioux City are not shown.
Sioux City 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 Sioux City is DSL internet available?
DSL Internet Availability Key
DSL is available in 96.19% of Sioux City. 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 Sioux City above to see who has service at your home.
How fast is DSL internet in Sioux City?
The map below shows maximum DSL internet speeds by area in Sioux City.
DSL Internet Speed Key
The average Sioux City home can get up to 31 Mbps on their DSL internet plan. The fastest DSL download speed in the city is 100 Mbps, which 12.91% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 59.57% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in Sioux City.
DSL internet speeds tend to be faster in the east parts of Sioux City, and slower in the north areas of the city.
Is DSL the fastest internet I can get in Sioux City?
The fastest internet for you may vary based on where in Sioux City you live. In general, fiber competes most often with DSL in the city.
- Fiber is the fastest internet type for 91.51% of Sioux City homes.
- Cable is fastest for 7.09% of the city.
- 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 Sioux City homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Sioux City, along with details on where in Sioux City and at what speeds.
Centurylink DSL in Sioux City, IA
Centurylink DSL coverage
About 95.69%, or 85,419 people, have Centurylink DSL internet available to them in the city. The company covers the entire Sioux City area. Centurylink is one of the largest internet service providers internet service providers in the US, with internet service available in most of Sioux City.
Centurylink DSL download speeds
Centurylink is below average when comparing download speeds to all other internet providers in Sioux City. Versus other DSL providers in the area, Centurylink DSL is the fastest. There are 5 different maximum speeds throughout Sioux City. The fastest plan anyone in Sioux City 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 Sioux City customers is up to 31 Mbps.
Show all download speeds
- 13.5% up to 100.0 Mbps
- 4.0% up to 80.0 Mbps
- 0.8% up to 60.0 Mbps
- 18.7% up to 40.0 Mbps
- 63.0% up to 10.0 Mbps
Centurylink DSL upload speeds
In Sioux City 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 Sioux City DSL providers. Centurylink offers 5 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 Sioux City is up to 100 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Centurylink customers can get speeds up to 5.8 Mbps.
Show all upload speeds
- 3.1% up to 100.0 Mbps
- 14.4% up to 10.0 Mbps
- 0.8% up to 5.0 Mbps
- 18.7% up to 3.0 Mbps
- 63.0% up to 1.0 Mbps
Long Lines DSL in Sioux City, IA
Long Lines DSL coverage
About 1.53%, or 1,368 people, have Long Lines DSL internet available to them in the city. The company covers the southeast, central, and northwest Sioux City 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 Sioux City.
Long Lines DSL download speeds
Long Lines is the slowest when comparing download speeds to all other internet providers in Sioux City. Versus other DSL providers in the area, Long Lines DSL is the slowest. There are 2 different maximum speeds throughout Sioux City. The fastest plan anyone in Sioux City can order from Long Lines goes up to 25 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Sioux City customers is up to 24 Mbps.
Show all download speeds
- 94.2% up to 25.0 Mbps
- 5.8% up to 10.0 Mbps
Long Lines DSL upload speeds
In Sioux City download speeds tend to be faster than than upload speeds for Long Lines DSL. Compared to other ISPs, Long Lines is the slowest where upload speeds are concerned, and the slowest compared to other Sioux City DSL providers. Long Lines 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 Sioux City is up to 3.0 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Long Lines customers can get speeds up to 2.9 Mbps.
Show all upload speeds
- 94.2% up to 3.0 Mbps
- 5.8% up to 1.0 Mbps
Sioux City DSL by Area
This information is most helpful to those looking for homes or considering moving to Sioux City or any of the areas nearby.
How does DSL internet in Sioux City compare to the rest of Iowa?
DSL internet speeds in Sioux City are much faster versus the average speeds in Iowa: 0.00 Mbps in Iowa versus 31 Mbps in the city. The state has similar DSL availability compared to the city. Average DSL coverage in Iowa is 0.00% versus 96.19% in Sioux City.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Sioux City 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
- South Sioux City, NE: more DSL coverage, slower speeds
- North Sioux City, SD: less DSL coverage, faster speeds
- Dakota City, NE: less DSL coverage, faster speeds
- Sergeant Bluff, IA: less DSL coverage, slower speeds
- Hinton, IA: less DSL coverage, faster speeds
- Lawton, IA: less DSL coverage, faster speeds
- Jefferson, SD: less DSL coverage, slower speeds
- Neptune, IA: less DSL coverage, faster speeds
- Bronson, IA: less DSL coverage, slower speeds
- Millnerville, IA: less DSL coverage, faster speeds
Cities with Similar Populations
- San Rafael, CA: less DSL coverage, faster speeds
- Scottsdale, AZ: less DSL coverage, faster speeds
- Santa Fe, NM: more DSL coverage, faster speeds
- Salem, OR: less DSL coverage, faster speeds
- San Francisco, CA: less DSL coverage, faster speeds
- Santa Maria, CA: less DSL coverage, slower speeds
- Santa Monica, CA: less DSL coverage, slower speeds
- Santa Rosa, CA: less DSL coverage, faster speeds
- Schenectady, NY: less DSL coverage, slower speeds
- Sanford, NC: less DSL coverage, faster speeds