San Marcos residents have 3 internet providers to choose from. Cox Communications is the most popular provider, offering cable and fiber internet service. In our research, we have been seeing 178 Mbps for download speeds and 29 Mbps for upload speeds for Cox Communications customers over 12,496 recent tests. AT&T and Spectrum also have coverage in San Marcos, although they are not as popular as Cox Communications. These providers offer DSL, fiber, fixed wireless and cable internet service.
See more detailed speed and coverage data below.
| Provider | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| Cox Communications Cable Fiber | 178 Mbps | 29 Mbps | 13 ms |
| AT&T DSL Fiber Fixed Wireless | 107 Mbps | 39 Mbps | 10 ms |
| Spectrum Cable | 203 Mbps | 14 Mbps | 12 ms |
| * Data from speed tests taken in the last 3 months | |||
Cox Communications is the most popular provider in San Marcos offering cable and fiber internet service. Users have been getting 178 Mbps for download speeds and 29 Mbps for upload speeds over 12,496 recent tests.
Cox Communications 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 San Marcos. 27% of users saw download speeds between 250-500 Mbps, and 28% of users saw upload speeds between 25-50 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| June 17, 2024 | 222 Mbps | 93 Mbps | 18 ms |
| June 17, 2024 | 60 Mbps | 12 Mbps | 16 ms |
| June 17, 2024 | 829 Mbps | 107 Mbps | 17 ms |
| June 17, 2024 | 60 Mbps | 12 Mbps | 19 ms |
| June 17, 2024 | 60 Mbps | 12 Mbps | 16 ms |
| June 17, 2024 | 116 Mbps | 20 Mbps | 18 ms |
| June 17, 2024 | 60 Mbps | 12 Mbps | 17 ms |
| June 17, 2024 | 135 Mbps | 41 Mbps | 17 ms |
| June 17, 2024 | 24 Mbps | 17 Mbps | 307 ms |
| June 17, 2024 | 4 Mbps | 10 Mbps | 26 ms |
AT&T is the 2nd most popular provider in San Marcos offering DSL, fiber and fixed wireless internet service. Users have been getting 107 Mbps for download speeds and 39 Mbps for upload speeds over 5,274 recent tests.
AT&T has the 3rd fastest average download speed, the fastest average upload speed, and the lowest latency out of all of the providers in San Marcos. 21% of users saw download speeds between 250-500 Mbps, and 21% of users saw upload speeds slower than 5 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| June 17, 2024 | 355 Mbps | 45 Mbps | 9 ms |
| June 17, 2024 | 51 Mbps | 1 Mbps | 11 ms |
| June 17, 2024 | 48 Mbps | 9 Mbps | 24 ms |
| June 17, 2024 | 7 Mbps | 1 Mbps | 29 ms |
| June 17, 2024 | 728 Mbps | 36 Mbps | 7 ms |
| June 17, 2024 | 584 Mbps | 265 Mbps | 6 ms |
| June 17, 2024 | 315 Mbps | 43 Mbps | 9 ms |
| June 17, 2024 | 633 Mbps | 664 Mbps | 7 ms |
| June 17, 2024 | 113 Mbps | 1 Mbps | 12 ms |
| June 17, 2024 | 360 Mbps | 1 Mbps | 6 ms |
Spectrum is the 3rd most popular provider in San Marcos offering cable internet service. Users have been getting 203 Mbps for download speeds and 14 Mbps for upload speeds over 4,346 recent tests.
Spectrum has the fastest average download speed, the 3rd fastest average upload speed, and the 2nd lowest latency out of all of the providers in San Marcos. 31% of users saw download speeds between 250-500 Mbps, and 48% of users saw upload speeds between 10-25 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| June 17, 2024 | 55 Mbps | 35 Mbps | 9 ms |
| June 17, 2024 | 343 Mbps | 22 Mbps | 11 ms |
| June 17, 2024 | 47 Mbps | 8 Mbps | 12 ms |
| June 17, 2024 | 199 Mbps | 10 Mbps | 10 ms |
| June 17, 2024 | 40 Mbps | 11 Mbps | 19 ms |
| June 17, 2024 | 152 Mbps | 39 Mbps | 12 ms |
| June 17, 2024 | 267 Mbps | 11 Mbps | 9 ms |
| June 17, 2024 | 821 Mbps | 41 Mbps | 7 ms |
| June 17, 2024 | 885 Mbps | 41 Mbps | 10 ms |
| June 17, 2024 | 110 Mbps | 11 Mbps | 13 ms |
We’ll run a download test and an upload test to give you the full picture of your internet connection.