AT&T - Fastest Provider
WOW! - Cheapest Provider
Viasat - Widely Available
Viasat - Great for Rural Areas
T-Mobile - Offers 5G Home Internet
AT&T - Great Value

Fastest Internet Providers in Charleston, SC

AT&T is the fastest provider in Charleston, with speeds up to 5 Gbps.

The fastest internet providers in Charleston are AT&T Fiber, Xfinity and WOW! AT&T Fiber delivers symmetrical speeds because it operates on a fiber network that transmits data faster over longer distances than other wired connections such as DSL and cable. They also don’t have data caps to tamper with their performance, making AT&T Fiber ideal for streamers and gamers.

Xfinity is the second-fastest internet provider in Charleston. With download speeds up to 2 Gbps on a cable connection, Xfinity provides vast coverage across Charleston at a small cost of internet speeds. They’re the next best option if fiber internet is unavailable in your neighborhood. Xfinity does impose a data cap on plans, though it’s generous and unlikely that casual users will hit their cap often.

Lastly, WOW! is another contender for fast internet in Charleston, with download speeds that go up to 1 Gbps. Like Xfinity, WOW! is a cable internet provider, which means it doesn’t have symmetrical speeds. However, the provider is a great alternative if neither AT&T Fiber nor Xfinity are available and you’re looking for gigabit speeds over a wired connection.

What’s a Good Internet Speed?

Internet Speed	Appropriate For	Providers in your Area offering this Speed	Availability in your Area
100 Mbps	Streaming Video chat Online gaming Larger households	Viasat T-Mobile Verizon Hughesnet Starlink	100%
1000 Mbps (1 Gbps)	Heavy streaming (4K video multiple devices etc.) Video chat Lag-free gaming Large households	AT&T Xfinity XNET WiFi Home Telecom WOW!	93.30000000000001%

Learn more about internet speeds:

Internet Availability in Charleston, SC

Charleston residents can choose from 11 providers to access a reliable internet connection, but how do you know which one will work for your home? The Holy City features top providers for both fiber and cable services, with Xfinity featuring the widest availability covering 93.3% of the city.

AT&T Fiber features sporadic coverage across the inlet of the Ashley River, covering 42.1% of the city. Residents located near Whitehouse Plantation and Stiles Point can access the provider’s fiber service too. Foley Beach and Sullivan’s Island lack coverage near the shoreline, as do inland locations, such as Cherokee Place and the Charleston Air Force Base.

Xfinity’s cable internet fills in more than enough gaps in AT&T Fiber’s coverage. With coverage on Foley Beach and plenty of service near the Air Force Base, unlike AT&T Fiber, the provider boasts sweeping availability from the shoreline to Weatherstone. Unfortunately, service in Long Island, Goat Island, and along Lighthouse Creek is unavailable.

Another cable provider in Charleston worth mentioning is WOW! While the provider only covers 59.3% of the city, it features strong coverage to homes on the northeast of the Stono River and both sides of the Ashley River.

Provider Connection Types in Charleston, SC

Connection Type	About this Connection Type	Availability in Charleston, SC
Satellite	Available even in very rural areas Typically has high latency (lag)	100%
Cable	Typically 250 Mbps - 1 Gbps Widely available A good choice for most users	93.32000000000001%
Fiber	Typically 1 Gbps or faster Upload speeds match download speeds	39.410000000000004%