In Charleston County there are 3 residential Cable providers covering 95.79% of the county. The average home can get speeds up to 1,526 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 Cable internet providers in Charleston County, SC.
To see availability maps for all providers including fiber, cable, DSL, and more in Charleston County, SC please click below.
Charleston County, SC Availability Maps
Cable Internet Service Providers in Charleston 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 Charleston County are not shown.
Charleston 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 Charleston County is cable internet available?
Cable Internet Availability Key
Cable is available in 95.79% of Charleston County. Areas in green have cable internet service, where areas in yellow or red may not. The most widely available provider is XFINITY. Call one of the companies with service in Charleston County above to see who has service at your home.
How fast is cable internet in Charleston County?
The map below shows maximum cable internet speeds by area in Charleston County.
Cable Internet Speed Key
The average Charleston County home can get up to 1,526 Mbps on their cable internet plan. The fastest cable download speed in the county is 2,000 Mbps, which 39.27% 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 Charleston County.
Cable internet speeds tend to be faster in the north parts of Charleston County, and slower in the southwest areas of the county.
Is cable the fastest internet I can get in Charleston County?
The fastest internet for you may vary based on where in Charleston County you live. In general, fiber competes most often with cable in the county.
- Fiber is the fastest internet type for 51.13% of Charleston County homes.
- Cable is fastest for 46.88% 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 1.73% of Charleston County homes.
Cable Providers in Depth
Below you'll find which TV and internet providers offer service in Charleston County, along with details on where in Charleston County and at what speeds.
XFINITY from Comcast Cable in Charleston County, SC
XFINITY cable coverage
About 94.55%, or 386,002 people, have XFINITY cable internet available to them in the county. The company covers the entire Charleston County area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in most of Charleston County.
XFINITY from Comcast cable download speeds
XFINITY is average when comparing download speeds to all other internet providers in Charleston County. Versus other cable providers in the area, XFINITY cable is the fastest. There are 2 different maximum speeds throughout Charleston County. The fastest plan anyone in Charleston County can order from XFINITY goes up to 2,000 Mbps, the slowest package only goes up to 1,200 Mbps, and the county-wide average maximum speed for Charleston County customers is up to 1,532 Mbps.
Show all download speeds
- 41.5% up to 2,000.0 Mbps
- 58.5% up to 1,200.0 Mbps
XFINITY from Comcast cable upload speeds
In Charleston County download speeds tend to be faster than than upload speeds for XFINITY cable. Compared to other ISPs, XFINITY is below average where upload speeds are concerned, and the fastest compared to other Charleston County cable providers. XFINITY offers 3 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 Charleston County is up to 1,000 Mbps. Some customers have slower plan choices, which only go up to 35 Mbps. On average, XFINITY customers can get speeds up to 125 Mbps.
Show all upload speeds
- 0.1% up to 1,000.0 Mbps
- 41.5% up to 250.0 Mbps
- 58.5% up to 35.0 Mbps
WOW! Cable in Charleston County, SC
WOW! cable coverage
About 55.12%, or 225,020 people, have WOW! cable internet available to them in the county. The company covers the entire Charleston County area. WOW! is a large internet service provider internet service providers in the US, with internet service available in a majority of Charleston County.
WOW! cable download speeds
WOW! is below average when comparing download speeds to all other internet providers in Charleston County. Versus other cable providers in the area, WOW! cable is below average. There are no different maximum speeds throughout Charleston County. The fastest plan anyone in Charleston County can order from WOW! goes up to 1,200 Mbps, and all Charleston County customers can get this speed.
Show all download speeds
- 100.0% up to 1,200.0 Mbps
WOW! cable upload speeds
In Charleston County download speeds tend to be faster than than upload speeds for WOW! cable. Compared to other ISPs, WOW! is below average where upload speeds are concerned, and below average compared to other Charleston County cable providers. WOW! offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Charleston County is up to 50 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 50.0 Mbps
Spectrum Cable in Charleston County, SC
Spectrum cable coverage
About 2.73%, or 11,126 people, have Spectrum cable internet available to them in the county. The company covers the northwest and northeast Charleston County area. Spectrum is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Charleston County.
Spectrum cable download speeds
Spectrum is below average when comparing download speeds to all other internet providers in Charleston County. Versus other cable providers in the area, Spectrum cable is the slowest. There are no different maximum speeds throughout Charleston County. The fastest plan anyone in Charleston County can order from Spectrum goes up to 1,000 Mbps, and all Charleston County customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Spectrum cable upload speeds
In Charleston County download speeds tend to be faster than than upload speeds for Spectrum cable. Compared to other ISPs, Spectrum is below average where upload speeds are concerned, and the slowest compared to other Charleston County cable providers. Spectrum offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Charleston County is up to 35 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 35.0 Mbps
Charleston County Cable by Area
This information is most helpful to those looking for homes or considering moving to Charleston County or any of the areas nearby.
How does cable internet in Charleston County compare to the rest of South Carolina?
Cable internet speeds in Charleston County are much faster versus the average speeds in South Carolina: 0.00 Mbps in South Carolina versus 1,526 Mbps in the county. The state has similar cable availability compared to the county. Average cable coverage in South Carolina is 0.00% versus 95.79% in Charleston County.
What zip codes have cable internet?
Cable internet coverage varies by zip code and neighborhood. Some examples in or around Charleston County are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does cable 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
- Dorchester County, SC: less cable coverage, slower speeds
- Colleton County, SC: less cable coverage, slower speeds
- Hampton County, SC: less cable coverage, slower speeds
- Allendale County, SC: less cable coverage, slower speeds
- Screven County, GA: less cable coverage, slower speeds
- Jenkins County, GA: less cable coverage, slower speeds
- Washington County, GA: less cable coverage, slower speeds
- Wilkinson County, GA: less cable coverage, slower speeds
- Twiggs County, GA: less cable coverage, faster speeds
- Jones County, GA: less cable coverage, faster speeds
Counties with Similar Populations
- Placer County, CA: less cable coverage, faster speeds
- Davis County, UT: more cable coverage, faster speeds
- Santa Barbara County, CA: less cable coverage, faster speeds
- San Juan Municipio, PR: less cable coverage, slower speeds
- Rutherford County, TN: more cable coverage, faster speeds
- Rockland County, NY: more cable coverage, slower speeds
- Hillsborough County, NH: more cable coverage, faster speeds
- Richland County, SC: less cable coverage, slower speeds
- Pulaski County, AR: more cable coverage, faster speeds
- Albany County, NY: more cable coverage, slower speeds