In South Carolina there are 8 residential DSL providers covering 63.87% of the state. The average home can get speeds up to 59 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 South Carolina.
To see availability maps for all providers including fiber, cable, DSL, and more in South Carolina please click below.
South Carolina Availability Maps
DSL Internet Service Providers in South Carolina
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 South Carolina are not shown.
South Carolina 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 South Carolina is DSL internet available?
DSL Internet Availability Key
DSL is available in 63.87% of South Carolina. 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 South Carolina above to see who has service at your home.
How fast is DSL internet in South Carolina?
The map below shows maximum DSL internet speeds by area in South Carolina.
DSL Internet Speed Key
The average South Carolina home can get up to 59 Mbps on their DSL internet plan. The fastest DSL download speed in the state is 300 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, 19.07% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in South Carolina.
DSL internet speeds tend to be faster in the central parts of South Carolina, and slower in the east areas of the state.
Is DSL the fastest internet I can get in South Carolina?
The fastest internet for you may vary based on where in South Carolina you live. In general, fiber competes most often with DSL in the state.
- Fiber is the fastest internet type for 66.97% of South Carolina homes.
- Cable is fastest for 29.99% of the state.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 1.14%.
- Satellite internet may be the only option for 1.66% of South Carolina homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in South Carolina, along with details on where in South Carolina and at what speeds.
EarthLink DSL in South Carolina
EarthLink DSL coverage
About 47.45%, or 2,428,708 people, have EarthLink DSL internet available to them in the state. The company covers the entire South Carolina area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in some of South Carolina.
EarthLink DSL download speeds
EarthLink is below average when comparing download speeds to all other internet providers in South Carolina. Versus other DSL providers in the area, EarthLink DSL is above average. There are 5 different maximum speeds throughout South Carolina. The fastest plan anyone in South Carolina can order from EarthLink goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the state-wide average maximum speed for South Carolina customers is up to 59 Mbps.
Show all download speeds
- 39.6% up to 100.0 Mbps
- 9.1% up to 75.0 Mbps
- 16.1% up to 50.0 Mbps
- 9.3% up to 25.0 Mbps
- 25.8% up to 10.0 Mbps
EarthLink DSL upload speeds
In South Carolina 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 above average compared to other South Carolina DSL providers. EarthLink offers 4 different upload speeds across the state, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in South Carolina 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 12 Mbps.
Show all upload speeds
- 48.7% up to 20.0 Mbps
- 16.1% up to 10.0 Mbps
- 9.3% up to 5.0 Mbps
- 25.8% up to 1.0 Mbps
AT&T DSL in South Carolina
AT&T DSL coverage
About 47.45%, or 2,428,708 people, have AT&T DSL internet available to them in the state. The company covers the entire South Carolina area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in some of South Carolina.
AT&T DSL download speeds
AT&T is below average when comparing download speeds to all other internet providers in South Carolina. Versus other DSL providers in the area, AT&T DSL is above average. There are 5 different maximum speeds throughout South Carolina. The fastest plan anyone in South Carolina can order from AT&T goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the state-wide average maximum speed for South Carolina customers is up to 59 Mbps.
Show all download speeds
- 39.6% up to 100.0 Mbps
- 9.1% up to 75.0 Mbps
- 16.1% up to 50.0 Mbps
- 9.3% up to 25.0 Mbps
- 25.8% up to 10.0 Mbps
AT&T DSL upload speeds
In South Carolina 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 above average compared to other South Carolina DSL providers. AT&T offers 4 different upload speeds across the state, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in South Carolina 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 12 Mbps.
Show all upload speeds
- 48.7% up to 20.0 Mbps
- 16.1% up to 10.0 Mbps
- 9.3% up to 5.0 Mbps
- 25.8% up to 1.0 Mbps
Frontier Communications DSL in South Carolina
Frontier DSL coverage
About 4.68%, or 239,379 people, have Frontier DSL internet available to them in the state. The company covers the east, southeast, northwest, south, central, west, southwest, and north South Carolina area. Frontier is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of South Carolina.
Frontier Communications DSL download speeds
Frontier is below average when comparing download speeds to all other internet providers in South Carolina. Versus other DSL providers in the area, Frontier DSL is below average. There are 5 different maximum speeds throughout South Carolina. The fastest plan anyone in South Carolina can order from Frontier goes up to 115 Mbps, the slowest package only goes up to 10 Mbps, and the state-wide average maximum speed for South Carolina customers is up to 23 Mbps.
Show all download speeds
- 4.6% up to 115.0 Mbps
- 5.7% up to 90.0 Mbps
- 4.1% up to 70.0 Mbps
- 4.1% up to 45.0 Mbps
- 81.6% up to 10.0 Mbps
Frontier Communications DSL upload speeds
In South Carolina download speeds tend to be faster than than upload speeds for Frontier DSL. Compared to other ISPs, Frontier is below average where upload speeds are concerned, and below average compared to other South Carolina DSL providers. Frontier offers 4 different upload speeds across the state, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in South Carolina 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 1.7 Mbps.
Show all upload speeds
- 4.6% up to 7.0 Mbps
- 5.7% up to 5.0 Mbps
- 8.2% up to 3.0 Mbps
- 81.6% up to 1.0 Mbps
Windstream DSL in South Carolina
Windstream DSL coverage
About 3.30%, or 169,009 people, have Windstream DSL internet available to them in the state. The company covers the central, northwest, south, and north South Carolina area. Windstream is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of South Carolina.
Windstream DSL download speeds
Windstream is below average when comparing download speeds to all other internet providers in South Carolina. Versus other DSL providers in the area, Windstream DSL is the fastest. There are 6 different maximum speeds throughout South Carolina. The fastest plan anyone in South Carolina can order from Windstream goes up to 300 Mbps, the slowest package only goes up to 10 Mbps, and the state-wide average maximum speed for South Carolina customers is up to 157 Mbps.
Show all download speeds
- 21.2% up to 300.0 Mbps
- 30.7% up to 200.0 Mbps
- 26.8% up to 100.0 Mbps
- 7.2% up to 50.0 Mbps
- 1.5% up to 25.0 Mbps
- 12.6% up to 10.0 Mbps
Windstream DSL upload speeds
In South Carolina download speeds tend to be faster than than upload speeds for Windstream DSL. Compared to other ISPs, Windstream is below average where upload speeds are concerned, and the fastest compared to other South Carolina DSL providers. Windstream offers 18 different upload speeds across the state, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in South Carolina is up to 83 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Windstream customers can get speeds up to 44 Mbps.
Show all upload speeds
- 23.1% up to 83.0 Mbps
- 0.5% up to 80.0 Mbps
- 1.0% up to 69.0 Mbps
- 0.1% up to 60.0 Mbps
- 35.4% up to 52.0 Mbps
- 0.0% up to 50.0 Mbps
- 0.2% up to 40.0 Mbps
- 5.7% up to 32.0 Mbps
- 7.0% up to 23.0 Mbps
- 0.1% up to 22.0 Mbps
- 0.3% up to 20.0 Mbps
- 5.3% up to 17.0 Mbps
- 0.1% up to 15.0 Mbps
- 3.3% up to 12.0 Mbps
- 0.6% up to 10.0 Mbps
- 0.0% up to 9.0 Mbps
- 4.7% up to 3.0 Mbps
- 12.6% up to 1.0 Mbps
Brightspeed DSL in South Carolina
Brightspeed DSL coverage
About 3.22%, or 164,989 people, have Brightspeed DSL internet available to them in the state. The company covers the south, west, southeast, northwest, and southwest South Carolina 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 South Carolina.
Brightspeed DSL download speeds
Brightspeed is below average when comparing download speeds to all other internet providers in South Carolina. Versus other DSL providers in the area, Brightspeed DSL is below average. There are 5 different maximum speeds throughout South Carolina. The fastest plan anyone in South Carolina can order from Brightspeed goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the state-wide average maximum speed for South Carolina customers is up to 34 Mbps.
Show all download speeds
- 11.5% up to 100.0 Mbps
- 8.5% up to 80.0 Mbps
- 8.2% up to 60.0 Mbps
- 12.2% up to 40.0 Mbps
- 59.6% up to 10.0 Mbps
Brightspeed DSL upload speeds
In South Carolina 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 below average compared to other South Carolina DSL providers. Brightspeed offers 4 different upload speeds across the state, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in South Carolina 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 3.4 Mbps.
Show all upload speeds
- 20.0% up to 10.0 Mbps
- 8.2% up to 5.0 Mbps
- 12.2% up to 3.0 Mbps
- 59.6% up to 1.0 Mbps
Sparklight DSL in South Carolina
Sparklight DSL coverage
About 2.11%, or 107,752 people, have Sparklight DSL internet available to them in the state. The company covers the south South Carolina area. Sparklight is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of South Carolina.
Sparklight DSL download speeds
Sparklight is below average when comparing download speeds to all other internet providers in South Carolina. Versus other DSL providers in the area, Sparklight DSL is below average. There are 2 different maximum speeds throughout South Carolina. The fastest plan anyone in South Carolina can order from Sparklight goes up to 30 Mbps, the slowest package only goes up to 10 Mbps, and the state-wide average maximum speed for South Carolina customers is up to 30 Mbps.
Show all download speeds
- 99.5% up to 30.0 Mbps
- 0.5% up to 10.0 Mbps
Sparklight DSL upload speeds
In South Carolina download speeds tend to be faster than than upload speeds for Sparklight DSL. Compared to other ISPs, Sparklight is below average where upload speeds are concerned, and below average compared to other South Carolina DSL providers. Sparklight offers 2 different upload speeds across the state, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in South Carolina is up to 5.0 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Sparklight customers can get speeds up to 5.0 Mbps.
Show all upload speeds
- 99.5% up to 5.0 Mbps
- 0.5% up to 1.0 Mbps
COMPORIUM DSL in South Carolina
COMPORIUM DSL coverage
About 1.30%, or 66,715 people, have COMPORIUM DSL internet available to them in the state. The company covers the north, central, south, west, northwest, and southwest South Carolina area. COMPORIUM is a large internet service provider internet service providers in the US, with internet service available in a very small piece of South Carolina.
COMPORIUM DSL download speeds
COMPORIUM is one of the slowest when comparing download speeds to all other internet providers in South Carolina. Versus other DSL providers in the area, COMPORIUM DSL is one of the slowest. There are no different maximum speeds throughout South Carolina. The fastest plan anyone in South Carolina can order from COMPORIUM goes up to 10 Mbps, and all South Carolina customers can get this speed.
Show all download speeds
- 100.0% up to 10.0 Mbps
COMPORIUM DSL upload speeds
In South Carolina download speeds tend to be faster than than upload speeds for COMPORIUM DSL. Compared to other ISPs, COMPORIUM is one of the slowest where upload speeds are concerned, and one of the slowest compared to other South Carolina DSL providers. COMPORIUM offers no different upload speeds across the state. The fastest upload speed available to anyone from this ISP in South Carolina is up to 1.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1.0 Mbps
FTC Communications DSL in South Carolina
FTC DSL coverage
About 1.24%, or 63,302 people, have FTC DSL internet available to them in the state. The company covers the east, central, southeast, and south South Carolina area. FTC is a large internet service provider internet service providers in the US, with internet service available in a very small piece of South Carolina.
FTC Communications DSL download speeds
FTC is below average when comparing download speeds to all other internet providers in South Carolina. Versus other DSL providers in the area, FTC DSL is above average. There are 4 different maximum speeds throughout South Carolina. The fastest plan anyone in South Carolina can order from FTC goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the state-wide average maximum speed for South Carolina customers is up to 56 Mbps.
Show all download speeds
- 31.3% up to 100.0 Mbps
- 38.7% up to 50.0 Mbps
- 16.4% up to 25.0 Mbps
- 13.6% up to 10.0 Mbps
FTC Communications DSL upload speeds
In South Carolina download speeds tend to be faster than than upload speeds for FTC DSL. Compared to other ISPs, FTC is below average where upload speeds are concerned, and average compared to other South Carolina DSL providers. FTC offers 4 different upload speeds across the state, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in South Carolina is up to 10 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, FTC customers can get speeds up to 6.9 Mbps.
Show all upload speeds
- 31.3% up to 10.0 Mbps
- 38.7% up to 8.0 Mbps
- 16.4% up to 3.0 Mbps
- 13.6% up to 1.0 Mbps
South Carolina DSL by Area
This information is most helpful to those looking for homes or considering moving to South Carolina or any of the areas nearby.
How does DSL internet in South Carolina compare to the rest of the United States?
DSL internet speeds in South Carolina are much faster versus the average speeds in the United States: 0.00 Mbps in the United States versus 59 Mbps in the state. The nation has similar DSL availability compared to the state. Average DSL coverage in the United States is 0.00% versus 63.87% in South Carolina.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around South Carolina 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 states?
Below are states nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby States
- North Carolina: more DSL coverage, slower speeds
- Georgia: more DSL coverage, faster speeds
- Virginia: less DSL coverage, slower speeds
- Tennessee: more DSL coverage, slower speeds
- West Virginia: less DSL coverage, slower speeds
- Alabama: more DSL coverage, slower speeds
- Kentucky: more DSL coverage, faster speeds
- Florida: more DSL coverage, faster speeds
- Maryland: less DSL coverage, slower speeds
- Ohio: more DSL coverage, slower speeds
States with Similar Populations
- Arizona: more DSL coverage, faster speeds
- Alabama: more DSL coverage, slower speeds
- Louisiana: more DSL coverage, slower speeds
- Kentucky: more DSL coverage, faster speeds
- Kansas: more DSL coverage, slower speeds
- Iowa: more DSL coverage, faster speeds
- Indiana: more DSL coverage, slower speeds
- Illinois: more DSL coverage, faster speeds
- Idaho: more DSL coverage, faster speeds
- Hawaii: more DSL coverage, slower speeds