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 176 Mbps for download speeds and 28 Mbps for upload speeds for Cox Communications customers over 15,622 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 | 176 Mbps | 28 Mbps | 15 ms |
| AT&T DSL Fiber Fixed Wireless | 77 Mbps | 20 Mbps | 10 ms |
| Spectrum Cable | 198 Mbps | 12 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 176 Mbps for download speeds and 28 Mbps for upload speeds over 15,622 recent tests.
Cox Communications has the 2nd fastest average download speed, the 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 27% of users saw upload speeds between 25-50 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| March 16, 2024 | 2 Mbps | 19 Mbps | 21 ms |
| March 16, 2024 | 498 Mbps | 12 Mbps | 17 ms |
| March 16, 2024 | 530 Mbps | 111 Mbps | 23 ms |
| March 16, 2024 | 86 Mbps | 53 Mbps | 25 ms |
| March 16, 2024 | 677 Mbps | 7 Mbps | 23 ms |
| March 16, 2024 | 47 Mbps | 28 Mbps | 20 ms |
| March 16, 2024 | 2 Mbps | 4 Mbps | 22 ms |
| March 16, 2024 | 3 Mbps | 7 Mbps | 22 ms |
| March 16, 2024 | 220 Mbps | 1 Mbps | 18 ms |
| March 16, 2024 | 23 Mbps | 17 Mbps | 11 ms |
AT&T is the 2nd most popular provider in San Marcos offering DSL, fiber and fixed wireless internet service. Users have been getting 77 Mbps for download speeds and 20 Mbps for upload speeds over 5,455 recent tests.
AT&T has the 3rd fastest average download speed, the 2nd fastest average upload speed, and the lowest latency out of all of the providers in San Marcos. 18% of users saw download speeds between 250-500 Mbps, and 24% of users saw upload speeds slower than 5 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| March 16, 2024 | 339 Mbps | 140 Mbps | 10 ms |
| March 16, 2024 | 321 Mbps | 117 Mbps | 13 ms |
| March 16, 2024 | 339 Mbps | 329 Mbps | 7 ms |
| March 16, 2024 | 354 Mbps | 354 Mbps | 7 ms |
| March 16, 2024 | 353 Mbps | 350 Mbps | 10 ms |
| March 16, 2024 | 352 Mbps | 354 Mbps | 8 ms |
| March 16, 2024 | 910 Mbps | 868 Mbps | 7 ms |
| March 16, 2024 | 411 Mbps | 290 Mbps | 10 ms |
| March 16, 2024 | 53 Mbps | 12 Mbps | 26 ms |
| March 16, 2024 | 366 Mbps | 321 Mbps | 65 ms |
Spectrum is the 3rd most popular provider in San Marcos offering cable internet service. Users have been getting 198 Mbps for download speeds and 12 Mbps for upload speeds over 3,826 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 51% of users saw upload speeds between 10-25 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| March 16, 2024 | 331 Mbps | 21 Mbps | 16 ms |
| March 16, 2024 | 56 Mbps | 35 Mbps | 10 ms |
| March 16, 2024 | 1 Mbps | 11 Mbps | 14 ms |
| March 16, 2024 | 245 Mbps | 9 Mbps | 12 ms |
| March 16, 2024 | 80 Mbps | 7 Mbps | 20 ms |
| March 16, 2024 | 880 Mbps | 39 Mbps | 10 ms |
| March 16, 2024 | 481 Mbps | 40 Mbps | 7 ms |
| March 16, 2024 | 180 Mbps | 40 Mbps | 18 ms |
| March 16, 2024 | 424 Mbps | 7 Mbps | 13 ms |
| March 16, 2024 | 325 Mbps | 11 Mbps | 12 ms |
We’ll run a download test and an upload test to give you the full picture of your internet connection.