FCC Data · Updated April 2026
South Carolina Internet Overview
987 Mbps avg · 424 ZIP codes · 99% fiber · 46 counties
987
Avg Mbps
99%
Fiber Access
10
Avg Providers
424
ZIP Codes
County Grade Distribution
A
24
B
16
C
6
D
0
F
0
Best Broadband Counties in South Carolina
| County | Grade | Avg Download | Fiber | ZIPs |
|---|---|---|---|---|
| Colleton | A | 1000 Mbps | 100% | 11 |
| Horry | A | 1000 Mbps | 100% | 16 |
| Abbeville | A | 1000 Mbps | 100% | 6 |
| Greenwood | A | 1000 Mbps | 100% | 5 |
| Newberry | A | 1000 Mbps | 100% | 9 |
| Lexington | A | 1000 Mbps | 100% | 13 |
| McCormick | A | 1000 Mbps | 100% | 6 |
| Calhoun | A | 1000 Mbps | 100% | 2 |
| Berkeley | A | 1000 Mbps | 100% | 13 |
| Lancaster | A | 1000 Mbps | 100% | 4 |
| Clarendon | A | 1000 Mbps | 100% | 6 |
| York | A | 1000 Mbps | 100% | 12 |
| Chesterfield | A | 1000 Mbps | 100% | 8 |
| Dorchester | A | 1000 Mbps | 100% | 8 |
| Richland | A | 1000 Mbps | 100% | 18 |
Slowest Counties in South Carolina
| County | Grade | Avg Download | Fiber | ZIPs |
|---|---|---|---|---|
| Allendale | C | 1000 Mbps | 100% | 5 |
| Marlboro | C | 1000 Mbps | 100% | 6 |
| Union | C | 1000 Mbps | 100% | 4 |
| Dillon | C | 100 Mbps | 0% | 6 |
| Bamberg | C | 1000 Mbps | 100% | 4 |
| Marion | C | 1000 Mbps | 100% | 6 |
| Darlington | B | 1000 Mbps | 100% | 6 |
| Fairfield | B | 1000 Mbps | 100% | 5 |
| Hampton | B | 1000 Mbps | 100% | 9 |
| Jasper | B | 1000 Mbps | 100% | 5 |
| Cherokee | B | 1000 Mbps | 100% | 5 |
| Chester | B | 1000 Mbps | 100% | 7 |
| Pickens | B | 1000 Mbps | 100% | 9 |
| Barnwell | B | 1000 Mbps | 100% | 4 |
| Lee | B | 1000 Mbps | 100% | 4 |
All 46 Counties in South Carolina
AColleton
AHorry
AAbbeville
AGreenwood
ANewberry
ALexington
AMcCormick
ACalhoun
ABerkeley
ALancaster
AClarendon
AYork
AChesterfield
ADorchester
ARichland
AGeorgetown
ASumter
AGreenville
ABeaufort
AFlorence
AAiken
AWilliamsburg
ASpartanburg
ACharleston
BSaluda
BKershaw
BOconee
BLaurens
BOrangeburg
BLee
BAnderson
BEdgefield
BPickens
BBarnwell
BChester
BCherokee
BJasper
BFairfield
BHampton
BDarlington
CMarion
CBamberg
CUnion
CDillon
CMarlboro
CAllendale
Internet Providers in South Carolina
| Provider | ZIP Codes | Max Speed |
|---|---|---|
| T-Mobile | — | 25 Mbps |
| Charter (Spectrum) | — | 1,000 Mbps |
| Comcast (Xfinity) | — | 2,000 Mbps |
| AT&T | — | 1,000 Mbps |
| Frontier Communications | 424 | 1,000 Mbps |
| Farmers Telephone Cooperative INC | 424 | 25 Mbps |
Cities in South Carolina
Neighboring States
Test Your Speed
See how your connection compares to the 987 Mbps average in South Carolina.
Frequently Asked Questions
What is the average internet speed in South Carolina?
South Carolina has an average maximum download speed of 987 Mbps across 424 ZIP codes. 99% of areas have fiber internet access, and the state averages 10 providers per ZIP code.
Which counties in South Carolina have the best internet?
The counties with the best broadband in South Carolina include Colleton (Grade A), Horry (Grade A), Abbeville (Grade A). These areas have the fastest average speeds and most provider competition.
How does South Carolina compare to the national average?
The national average download speed is 876 Mbps, while South Carolina averages 987 Mbps — above the national average. Nationally, 96% of areas have fiber, compared to 99% in South Carolina.
Sources: FCC Broadband Data Collection