South Carolina Internet Overview
987 Mbps avg · 424 ZIP codes · 99% fiber · 46 counties
County Grade Distribution
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
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
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.
The this entity record above pulls directly from the FCC Broadband Data Collection (BDC). What follows is the per-entity context — how this entity sits in the broader U.S. internet availability and broadband speed distribution and which underlying factors drive the headline numbers.
Every number on this page links back to the FCC Broadband Data Collection (BDC); the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for this entity is typically a peer within U.S. ZIPs, counties, and states with similar size, similar exposure, or similar geography — not the national-level summary alone.
Source: FCC Broadband Data Collection, 2026.