Charleston residents have 3 internet providers to choose from. Sparklight is the most popular provider, offering cable internet service. In our research, we have been seeing 167 Mbps for download speeds and 30 Mbps for upload speeds for Sparklight customers over 19 recent tests. C Spire Fiber and AT&T also have coverage in Charleston, although they are not as popular as Sparklight. These providers offer fiber, DSL and fixed wireless internet service.
See more detailed speed and coverage data below.
| Provider | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| Sparklight Cable | 167 Mbps | 30 Mbps | 23 ms |
| C Spire Fiber Fiber | 63 Mbps | 46 Mbps | 31 ms |
| AT&T DSL Fixed Wireless | 74 Mbps | 38 Mbps | 48 ms |
| * Data from speed tests taken in the last 3 months | |||
Sparklight is the most popular provider in Charleston offering cable internet service. Users have been getting 167 Mbps for download speeds and 30 Mbps for upload speeds over 19 recent tests.
Sparklight has the fastest average download speed, the 3rd fastest average upload speed, and the lowest latency out of all of the providers in Charleston. 46% of users saw download speeds between 100-250 Mbps, and 77% of users saw upload speeds between 25-50 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| June 3, 2024 | 542 Mbps | 39 Mbps | 22 ms |
| June 3, 2024 | 75 Mbps | 30 Mbps | 25 ms |
| June 2, 2024 | 169 Mbps | 25 Mbps | 22 ms |
| June 1, 2024 | 119 Mbps | 28 Mbps | 23 ms |
| May 29, 2024 | 133 Mbps | 26 Mbps | 23 ms |
| May 24, 2024 | 383 Mbps | 49 Mbps | 18 ms |
| May 23, 2024 | 325 Mbps | 20 Mbps | 18 ms |
| May 23, 2024 | 404 Mbps | 39 Mbps | 26 ms |
C Spire Fiber is the 2nd most popular provider in Charleston offering fiber internet service. Users have been getting 63 Mbps for download speeds and 46 Mbps for upload speeds over 12 recent tests.
C Spire Fiber has the 3rd fastest average download speed, the fastest average upload speed, and the 2nd lowest latency out of all of the providers in Charleston. 70% of users saw download speeds between 50-100 Mbps, and 50% of users saw upload speeds between 25-50 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| June 6, 2024 | 100 Mbps | 74 Mbps | 19 ms |
| June 4, 2024 | 63 Mbps | 64 Mbps | 31 ms |
| June 3, 2024 | 65 Mbps | 46 Mbps | 30 ms |
| May 26, 2024 | 63 Mbps | 51 Mbps | 31 ms |
| May 25, 2024 | 70 Mbps | 209 Mbps | 46 ms |
AT&T is the 3rd most popular provider in Charleston offering DSL and fixed wireless internet service. Users have been getting 74 Mbps for download speeds and 38 Mbps for upload speeds over 7 recent tests.
AT&T has the 2nd fastest average download speed, the 2nd fastest average upload speed, and the 3rd lowest latency out of all of the providers in Charleston. 67% of users saw download speeds between 50-100 Mbps, and 100% of users saw upload speeds between 25-50 Mbps.
Download Speeds
Upload Speeds
We’ll run a download test and an upload test to give you the full picture of your internet connection.