Charleston residents have 3 internet providers to choose from. AT&T is the most popular provider, offering DSL internet service. In our research, we have been seeing 14 Mbps for download speeds and 1 Mbps for upload speeds for AT&T customers over 33 recent tests. Spectrum and Sparklight also have coverage in Charleston, although they are not as popular as AT&T. These providers offer cable internet service.
See more detailed speed and coverage data below.
| Provider | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| AT&T DSL | 14 Mbps | 1 Mbps | 33 ms |
| Spectrum Cable | 34 Mbps | 7 Mbps | 15 ms |
| Sparklight Cable | 8 Mbps | 5 Mbps | 16 ms |
| * Data from speed tests taken in the last 3 months | |||
AT&T is the most popular provider in Charleston offering DSL internet service. Users have been getting 14 Mbps for download speeds and 1 Mbps for upload speeds over 33 recent tests.
AT&T has the 2nd fastest average download speed, the 3rd fastest average upload speed, and the 3rd lowest latency out of all of the providers in Charleston. 32% of users saw download speeds between 10-25 Mbps, and 61% of users saw upload speeds slower than 5 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| March 13, 2024 | 233 Mbps | 252 Mbps | 15 ms |
| March 12, 2024 | 493 Mbps | 243 Mbps | 16 ms |
| March 12, 2024 | 29 Mbps | 1 Mbps | 14 ms |
| March 12, 2024 | 6 Mbps | 1 Mbps | 37 ms |
| March 11, 2024 | 96 Mbps | 89 Mbps | 16 ms |
| March 10, 2024 | 13 Mbps | 1 Mbps | 34 ms |
| March 9, 2024 | 7 Mbps | 1 Mbps | 38 ms |
| March 9, 2024 | 14 Mbps | 1 Mbps | 38 ms |
| March 9, 2024 | 292 Mbps | 34 Mbps | 14 ms |
| March 9, 2024 | 772 Mbps | 53 Mbps | 11 ms |
Spectrum is the 2nd most popular provider in Charleston offering cable internet service. Users have been getting 34 Mbps for download speeds and 7 Mbps for upload speeds over 7 recent tests.
Spectrum has the fastest average download speed, the fastest average upload speed, and the lowest latency out of all of the providers in Charleston. 40% of users saw download speeds between 25-50 Mbps, and 40% of users saw upload speeds between 10-25 Mbps.
Download Speeds
Upload Speeds
Sparklight is the 3rd most popular provider in Charleston offering cable internet service. Users have been getting 8 Mbps for download speeds and 5 Mbps for upload speeds over 1 recent tests.
Sparklight has the 3rd fastest average download speed, the 2nd fastest average upload speed, and the 2nd lowest latency out of all of the providers in Charleston. 100% of users saw download speeds slower than 10 Mbps, and 100% of users saw upload speeds between 5-10 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.