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 153 Mbps for download speeds and 11 Mbps for upload speeds for Cox Communications customers over 12,016 recent tests. Spectrum and AT&T also have coverage in San Marcos, although they are not as popular as Cox Communications. These providers offer cable, DSL, fiber and fixed wireless internet service.
See more detailed speed and coverage data below.
| Provider | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| Cox Communications Cable Fiber | 153 Mbps | 11 Mbps | 11 ms |
| Spectrum Cable | 156 Mbps | 11 Mbps | 14 ms |
| AT&T DSL Fiber Fixed Wireless | 86 Mbps | 47 Mbps | 13 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 153 Mbps for download speeds and 11 Mbps for upload speeds over 12,016 recent tests.
Cox Communications has the 2nd fastest average download speed, the 2nd fastest average upload speed, and the lowest latency out of all of the providers in San Marcos. 24% of users saw download speeds between 250-500 Mbps, and 35% of users saw upload speeds between 10-25 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| June 3, 2023 | 5 Mbps | 4 Mbps | 13 ms |
| June 3, 2023 | 97 Mbps | 11 Mbps | 19 ms |
| June 3, 2023 | 268 Mbps | 6 Mbps | 12 ms |
| June 3, 2023 | 197 Mbps | 8 Mbps | 19 ms |
| June 3, 2023 | 101 Mbps | 29 Mbps | 27 ms |
| June 3, 2023 | 275 Mbps | 12 Mbps | 21 ms |
| June 3, 2023 | 7 Mbps | 4 Mbps | 37 ms |
| June 3, 2023 | 96 Mbps | 26 Mbps | 31 ms |
| June 3, 2023 | 234 Mbps | 103 Mbps | 12 ms |
| June 3, 2023 | 255 Mbps | 50 Mbps | 11 ms |
Spectrum is the 2nd most popular provider in San Marcos offering cable internet service. Users have been getting 156 Mbps for download speeds and 11 Mbps for upload speeds over 11,398 recent tests.
Spectrum has the fastest average download speed, the 3rd fastest average upload speed, and the 3rd lowest latency out of all of the providers in San Marcos. 30% of users saw download speeds between 250-500 Mbps, and 59% of users saw upload speeds between 10-25 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| June 3, 2023 | 57 Mbps | 11 Mbps | 16 ms |
| June 3, 2023 | 9 Mbps | 7 Mbps | 57 ms |
| June 3, 2023 | 114 Mbps | 11 Mbps | 13 ms |
| June 3, 2023 | 286 Mbps | 22 Mbps | 10 ms |
| June 3, 2023 | 40 Mbps | 11 Mbps | 13 ms |
| June 3, 2023 | 544 Mbps | 22 Mbps | 14 ms |
| June 3, 2023 | 128 Mbps | 12 Mbps | 13 ms |
| June 3, 2023 | 417 Mbps | 22 Mbps | 14 ms |
| June 3, 2023 | 172 Mbps | 11 Mbps | 14 ms |
| June 3, 2023 | 22 Mbps | 11 Mbps | 14 ms |
AT&T is the 3rd most popular provider in San Marcos offering DSL, fiber and fixed wireless internet service. Users have been getting 86 Mbps for download speeds and 47 Mbps for upload speeds over 5,697 recent tests.
AT&T has the 3rd fastest average download speed, the fastest average upload speed, and the 2nd lowest latency out of all of the providers in San Marcos. 22% of users saw download speeds between 50-100 Mbps, and 19% of users saw upload speeds faster than 250 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| June 3, 2023 | 617 Mbps | 605 Mbps | 18 ms |
| June 3, 2023 | 659 Mbps | 677 Mbps | 18 ms |
| June 3, 2023 | 104 Mbps | 91 Mbps | 18 ms |
| June 3, 2023 | 105 Mbps | 79 Mbps | 20 ms |
| June 3, 2023 | 53 Mbps | 46 Mbps | 18 ms |
| June 3, 2023 | 3 Mbps | 1 Mbps | 38 ms |
| June 3, 2023 | 297 Mbps | 192 Mbps | 13 ms |
| June 3, 2023 | 47 Mbps | 9 Mbps | 22 ms |
| June 3, 2023 | 346 Mbps | 602 Mbps | 11 ms |
| June 3, 2023 | 71 Mbps | 5 Mbps | 24 ms |
We’ll run a download test and an upload test to give you the full picture of your internet connection.