Charleston residents have 3 internet providers to choose from. Spectrum is the most popular provider, offering cable internet service. In our research, we have been seeing 42 Mbps for download speeds and 11 Mbps for upload speeds for Spectrum customers over 27 recent tests. Twin Lakes Telephone and AT&T also have coverage in Charleston, although they are not as popular as Spectrum. These providers offer fiber, DSL and fixed wireless internet service.
See more detailed speed and coverage data below.
| Provider | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| Spectrum Cable | 42 Mbps | 11 Mbps | 32 ms |
| Twin Lakes Telephone Fiber | 429 Mbps | 128 Mbps | 27 ms |
| AT&T DSL Fiber Fixed Wireless | 15 Mbps | 20 Mbps | 28 ms |
| * Data from speed tests taken in the last 3 months | |||
Spectrum is the most popular provider in Charleston offering cable internet service. Users have been getting 42 Mbps for download speeds and 11 Mbps for upload speeds over 27 recent tests.
Spectrum 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. 33% of users saw download speeds between 250-500 Mbps, and 36% of users saw upload speeds between 10-25 Mbps.
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Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| June 16, 2024 | 3 Mbps | 1 Mbps | 32 ms |
| June 15, 2024 | 4 Mbps | 4 Mbps | 32 ms |
| June 14, 2024 | 1 Mbps | 3 Mbps | 61 ms |
| June 11, 2024 | 4 Mbps | 2 Mbps | 62 ms |
| June 10, 2024 | 42 Mbps | 9 Mbps | 43 ms |
| June 7, 2024 | 4 Mbps | 5 Mbps | 93 ms |
| June 6, 2024 | 313 Mbps | 11 Mbps | 43 ms |
| June 6, 2024 | 6 Mbps | 7 Mbps | 67 ms |
| June 5, 2024 | 36 Mbps | 19 Mbps | 45 ms |
Twin Lakes Telephone is the 2nd most popular provider in Charleston offering fiber internet service. Users have been getting 429 Mbps for download speeds and 128 Mbps for upload speeds over 13 recent tests.
Twin Lakes Telephone has the fastest average download speed, the fastest average upload speed, and the lowest latency out of all of the providers in Charleston. 63% of users saw download speeds between 250-500 Mbps, and 29% of users saw upload speeds faster than 250 Mbps.
Download Speeds
Upload Speeds
AT&T is the 3rd most popular provider in Charleston offering DSL, fiber and fixed wireless internet service. Users have been getting 15 Mbps for download speeds and 20 Mbps for upload speeds over 6 recent tests.
AT&T 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. 25% of users saw download speeds between 100-250 Mbps, and 67% of users saw upload speeds between 10-25 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.