In Jefferson there are 2 residential Fiber providers covering 57.92% of the city. The average home can get speeds up to 1,550 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 Fiber internet providers in Jefferson, SD.
To see availability maps for all providers including fiber, cable, DSL, and more in Jefferson, SD please click below.
Jefferson, SD Availability Maps
Fiber Internet Service Providers in Jefferson
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 Jefferson are not shown.
Jefferson 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 Jefferson is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 57.92% of Jefferson. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is Long Lines. Call one of the companies with service in Jefferson above to see who has service at your home.
How fast is fiber internet in Jefferson?
The map below shows maximum fiber internet speeds by area in Jefferson.
Fiber Internet Speed Key
The average Jefferson home can get up to 1,550 Mbps on their fiber internet plan. The fastest fiber download speed in the city is 5,000 Mbps, which less than 1% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, less than 1% 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 Jefferson.
Fiber internet speeds tend to be faster in the northwest parts of Jefferson, and slower in the north areas of the city.
Is fiber the fastest internet I can get in Jefferson?
The fastest internet for you may vary based on where in Jefferson you live. In general, cable competes most often with fiber in the city.
- Fiber is the fastest internet type for 57.92% of Jefferson homes.
- Cable is fastest for 40.94% 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 Jefferson homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in Jefferson, along with details on where in Jefferson and at what speeds.
Long Lines Fiber in Jefferson, SD
Long Lines fiber coverage
About 57.92%, or 1,112 people, have Long Lines fiber internet available to them in the city. The company covers the entire Jefferson area. Long Lines is a large internet service provider internet service providers in the US, with internet service available in a majority of Jefferson.
Long Lines fiber download speeds
Long Lines is above average when comparing download speeds to all other internet providers in Jefferson. Versus other fiber providers in the area, Long Lines fiber is below average. There are 2 different maximum speeds throughout Jefferson. The fastest plan anyone in Jefferson can order from Long Lines goes up to 1,500 Mbps, the slowest package only goes up to 1,000 Mbps, and the city-wide average maximum speed for Jefferson customers is up to 1,486 Mbps.
Show all download speeds
- 97.1% up to 1,500.0 Mbps
- 2.9% up to 1,000.0 Mbps
Long Lines fiber upload speeds
In Jefferson download speeds tend to be equal to than upload speeds for Long Lines fiber. Compared to other ISPs, Long Lines is above average where upload speeds are concerned, and below average compared to other Jefferson fiber 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 Jefferson is up to 1,500 Mbps. Some customers have slower plan choices, which only go up to 1,000 Mbps. On average, Long Lines customers can get speeds up to 1,486 Mbps.
Show all upload speeds
- 97.1% up to 1,500.0 Mbps
- 2.9% up to 1,000.0 Mbps
ImOn Communications Fiber in Jefferson, SD
ImOn Communications fiber coverage
About 1.09%, or 21 people, have ImOn Communications fiber internet available to them in the city. The company covers the west Jefferson area. ImOn Communications is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Jefferson.
ImOn Communications fiber download speeds
ImOn Communications is above average when comparing download speeds to all other internet providers in Jefferson. Versus other fiber providers in the area, ImOn Communications fiber is the slowest. There are no different maximum speeds throughout Jefferson. The fastest plan anyone in Jefferson can order from ImOn Communications goes up to 1,000 Mbps, and all Jefferson customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
ImOn Communications fiber upload speeds
In Jefferson download speeds tend to be equal to than upload speeds for ImOn Communications fiber. Compared to other ISPs, ImOn Communications is above average where upload speeds are concerned, and the slowest compared to other Jefferson fiber providers. ImOn Communications offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Jefferson is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
Jefferson Fiber by Area
This information is most helpful to those looking for homes or considering moving to Jefferson or any of the areas nearby.
How does fiber internet in Jefferson compare to the rest of South Dakota?
Fiber internet speeds in Jefferson are much faster versus the average speeds in South Dakota: 0.00 Mbps in South Dakota versus 1,550 Mbps in the city. The state has similar fiber availability compared to the city. Average fiber coverage in South Dakota is 0.00% versus 57.92% in Jefferson.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around Jefferson are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does fiber 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
- North Sioux City, SD: more fiber coverage, slower speeds
- Willis, NE: more fiber coverage, slower speeds
- Ponca, NE: more fiber coverage, slower speeds
- Jackson, NE: more fiber coverage, slower speeds
- Elk Point, SD: more fiber coverage, faster speeds
- Sioux City, IA: more fiber coverage, faster speeds
- South Sioux City, NE: more fiber coverage, slower speeds
- Millnerville, IA: more fiber coverage, slower speeds
- Westfield, IA: more fiber coverage, slower speeds
- Junction City, SD: more fiber coverage, faster speeds
Cities with Similar Populations
- Worton, MD: more fiber coverage, faster speeds
- Rosenhayn, NJ: more fiber coverage, slower speeds
- Sherman, NY: more fiber coverage, slower speeds
- Delaware City, DE: more fiber coverage, faster speeds
- Dale, WI: more fiber coverage, slower speeds
- Cope, SC: more fiber coverage, slower speeds
- Constable, NY: less fiber coverage, slower speeds
- Collings Lakes, NJ: less fiber coverage, slower speeds
- Colchester, IL: more fiber coverage, slower speeds
- Canaan, ME: more fiber coverage, faster speeds