In Jefferson County there are 5 residential DSL providers covering 78.16% of the county. The average home can get speeds up to 37 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 Jefferson County, WI.
To see availability maps for all providers including fiber, cable, DSL, and more in Jefferson County, WI please click below.
Jefferson County, WI Availability Maps
DSL Internet Service Providers in Jefferson 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 Jefferson County are not shown.
Jefferson 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 Jefferson County is DSL internet available?
DSL Internet Availability Key
DSL is available in 78.16% of Jefferson County. Areas in green have DSL internet service, where areas in yellow or red may not. The most widely available provider is AT&T. Call one of the companies with service in Jefferson County above to see who has service at your home.
How fast is DSL internet in Jefferson County?
The map below shows maximum DSL internet speeds by area in Jefferson County.
DSL Internet Speed Key
The average Jefferson County home can get up to 37 Mbps on their DSL internet plan. The fastest DSL download speed in the county is 115 Mbps, which 2.61% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 43.36% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in Jefferson County.
DSL internet speeds tend to be faster in the southeast parts of Jefferson County, and slower in the central areas of the county.
Is DSL the fastest internet I can get in Jefferson County?
The fastest internet for you may vary based on where in Jefferson County you live. In general, cable competes most often with DSL in the county.
- Fiber is the fastest internet type for 36.14% of Jefferson County homes.
- Cable is fastest for 59.21% of the county.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 2.31%.
- Satellite internet may be the only option for 2.10% of Jefferson County homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Jefferson County, along with details on where in Jefferson County and at what speeds.
EarthLink DSL in Jefferson County, WI
EarthLink DSL coverage
About 45.65%, or 38,757 people, have EarthLink DSL internet available to them in the county. The company covers the northeast, southwest, central, south, north, northwest, east, and southeast Jefferson County area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in some of Jefferson County.
EarthLink DSL download speeds
EarthLink is below average when comparing download speeds to all other internet providers in Jefferson County. Versus other DSL providers in the area, EarthLink DSL is one of the slowest. There are 5 different maximum speeds throughout Jefferson County. The fastest plan anyone in Jefferson County can order from EarthLink goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for Jefferson County customers is up to 28 Mbps.
Show all download speeds
- 7.9% up to 100.0 Mbps
- 4.8% up to 75.0 Mbps
- 17.4% up to 50.0 Mbps
- 6.8% up to 25.0 Mbps
- 63.1% up to 10.0 Mbps
EarthLink DSL upload speeds
In Jefferson County download speeds tend to be faster than than upload speeds for EarthLink DSL. Compared to other ISPs, EarthLink is below average where upload speeds are concerned, and average compared to other Jefferson County DSL providers. EarthLink 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 Jefferson County is up to 20 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, EarthLink customers can get speeds up to 5.3 Mbps.
Show all upload speeds
- 12.7% up to 20.0 Mbps
- 17.4% up to 10.0 Mbps
- 6.8% up to 5.0 Mbps
- 63.1% up to 1.0 Mbps
AT&T DSL in Jefferson County, WI
AT&T DSL coverage
About 45.65%, or 38,757 people, have AT&T DSL internet available to them in the county. The company covers the northeast, southwest, central, south, north, northwest, east, and southeast Jefferson County area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in some of Jefferson County.
AT&T DSL download speeds
AT&T is below average when comparing download speeds to all other internet providers in Jefferson County. Versus other DSL providers in the area, AT&T DSL is one of the slowest. There are 5 different maximum speeds throughout Jefferson County. The fastest plan anyone in Jefferson County can order from AT&T goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for Jefferson County customers is up to 28 Mbps.
Show all download speeds
- 7.9% up to 100.0 Mbps
- 4.8% up to 75.0 Mbps
- 17.4% up to 50.0 Mbps
- 6.8% up to 25.0 Mbps
- 63.1% up to 10.0 Mbps
AT&T DSL upload speeds
In Jefferson County download speeds tend to be faster than than upload speeds for AT&T DSL. Compared to other ISPs, AT&T is below average where upload speeds are concerned, and average compared to other Jefferson County DSL providers. AT&T 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 Jefferson County is up to 20 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, AT&T customers can get speeds up to 5.3 Mbps.
Show all upload speeds
- 12.7% up to 20.0 Mbps
- 17.4% up to 10.0 Mbps
- 6.8% up to 5.0 Mbps
- 63.1% up to 1.0 Mbps
Frontier Communications DSL in Jefferson County, WI
Frontier DSL coverage
About 18.41%, or 15,634 people, have Frontier DSL internet available to them in the county. The company covers the west, northwest, southwest, north, and northeast Jefferson County area. Frontier is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of Jefferson County.
Frontier Communications DSL download speeds
Frontier is below average when comparing download speeds to all other internet providers in Jefferson County. Versus other DSL providers in the area, Frontier DSL is average. There are 5 different maximum speeds throughout Jefferson County. The fastest plan anyone in Jefferson County can order from Frontier goes up to 115 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for Jefferson County customers is up to 41 Mbps.
Show all download speeds
- 14.2% up to 115.0 Mbps
- 10.9% up to 90.0 Mbps
- 11.2% up to 70.0 Mbps
- 3.0% up to 45.0 Mbps
- 60.6% up to 10.0 Mbps
Frontier Communications DSL upload speeds
In Jefferson County download speeds tend to be faster than than upload speeds for Frontier DSL. Compared to other ISPs, Frontier is the slowest where upload speeds are concerned, and the slowest compared to other Jefferson County DSL providers. Frontier 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 Jefferson County is up to 7.0 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Frontier customers can get speeds up to 2.6 Mbps.
Show all upload speeds
- 14.2% up to 7.0 Mbps
- 10.9% up to 5.0 Mbps
- 14.2% up to 3.0 Mbps
- 60.6% up to 1.0 Mbps
Brightspeed DSL in Jefferson County, WI
Brightspeed DSL coverage
About 9.95%, or 8,444 people, have Brightspeed DSL internet available to them in the county. The company covers the southeast, east, northeast, southwest, south, and northwest Jefferson County area. Brightspeed is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Jefferson County.
Brightspeed DSL download speeds
Brightspeed is below average when comparing download speeds to all other internet providers in Jefferson County. Versus other DSL providers in the area, Brightspeed DSL is above average. There are 5 different maximum speeds throughout Jefferson County. The fastest plan anyone in Jefferson County can order from Brightspeed goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for Jefferson County customers is up to 55 Mbps.
Show all download speeds
- 29.0% up to 100.0 Mbps
- 17.3% up to 80.0 Mbps
- 4.5% up to 60.0 Mbps
- 15.8% up to 40.0 Mbps
- 33.5% up to 10.0 Mbps
Brightspeed DSL upload speeds
In Jefferson County download speeds tend to be faster than than upload speeds for Brightspeed DSL. Compared to other ISPs, Brightspeed is below average where upload speeds are concerned, and average compared to other Jefferson County DSL providers. Brightspeed 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 Jefferson County is up to 10 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Brightspeed customers can get speeds up to 5.7 Mbps.
Show all upload speeds
- 46.3% up to 10.0 Mbps
- 4.5% up to 5.0 Mbps
- 15.8% up to 3.0 Mbps
- 33.5% up to 1.0 Mbps
TDS DSL in Jefferson County, WI
TDS DSL coverage
About 5.02%, or 4,258 people, have TDS DSL internet available to them in the county. The company covers the central, east, north, northeast, west, and northwest Jefferson County area. TDS is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Jefferson County.
TDS DSL download speeds
TDS is below average when comparing download speeds to all other internet providers in Jefferson County. Versus other DSL providers in the area, TDS DSL is the fastest. There are 4 different maximum speeds throughout Jefferson County. The fastest plan anyone in Jefferson County can order from TDS goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for Jefferson County customers is up to 69 Mbps.
Show all download speeds
- 55.8% up to 100.0 Mbps
- 16.2% up to 50.0 Mbps
- 12.9% up to 25.0 Mbps
- 15.2% up to 10.0 Mbps
TDS DSL upload speeds
In Jefferson County download speeds tend to be faster than than upload speeds for TDS DSL. Compared to other ISPs, TDS is below average where upload speeds are concerned, and the fastest compared to other Jefferson County DSL providers. TDS offers 5 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 Jefferson County is up to 20 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, TDS customers can get speeds up to 13 Mbps.
Show all upload speeds
- 43.8% up to 20.0 Mbps
- 11.9% up to 15.0 Mbps
- 16.2% up to 10.0 Mbps
- 12.9% up to 5.0 Mbps
- 15.2% up to 1.0 Mbps
Jefferson County DSL by Area
This information is most helpful to those looking for homes or considering moving to Jefferson County or any of the areas nearby.
How does DSL internet in Jefferson County compare to the rest of Wisconsin?
DSL internet speeds in Jefferson County are much faster versus the average speeds in Wisconsin: 0.00 Mbps in Wisconsin versus 37 Mbps in the county. The state has similar DSL availability compared to the county. Average DSL coverage in Wisconsin is 0.00% versus 78.16% in Jefferson County.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Jefferson 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
- Waukesha County, WI: more DSL coverage, faster speeds
- Dane County, WI: less DSL coverage, faster speeds
- Milwaukee County, WI: more DSL coverage, faster speeds
- Iowa County, WI: less DSL coverage, faster speeds
- Crawford County, WI: less DSL coverage, faster speeds
- Ottawa County, MI: more DSL coverage, faster speeds
- Kent County, MI: more DSL coverage, faster speeds
- Chickasaw County, IA: more DSL coverage, faster speeds
- Ionia County, MI: less DSL coverage, slower speeds
- Floyd County, IA: less DSL coverage, slower speeds
Counties with Similar Populations
- Grays Harbor County, WA: less DSL coverage, slower speeds
- St. Croix County, WI: less DSL coverage, slower speeds
- St. Clair County, AL: more DSL coverage, faster speeds
- Polk County, OR: more DSL coverage, faster speeds
- Ozaukee County, WI: more DSL coverage, faster speeds
- Lauderdale County, AL: less DSL coverage, faster speeds
- Josephine County, OR: more DSL coverage, faster speeds
- Guaynabo Municipio, PR: more DSL coverage, faster speeds
- Steuben County, NY: less DSL coverage, faster speeds
- Grafton County, NH: more DSL coverage, slower speeds