San Marcos Internet Providers
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San Marcos has 15 internet options – View all▼
San Marcos has two fiber providers, AT&T and Cox. Symmetric speeds of 5,000 Mbps are available in parts of the city.
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| AT&T | 5,000 | 5,000 | 69% |
| Cox | 2,000 | 100 | 6% |
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| Cox | 2,000 | 500 | 91% |
| Spectrum | 1,000 | 35 | 57% |
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| AT&T | 100 | 20 | 26% |
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| San Diego | 500 | 100 | 96% |
| Verizon | 300 | 20 | 98% |
| MINTernet | 100 | 20 | 100% |
| T-Mobile | 100 | 20 | 100% |
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| Starlink | 280 | 30 | 100% |
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| Viasat | 100 | 3 | 100% |
| HughesNet | 50 | 5 | 100% |
| Provider | TechnologyTech | Download (Mbps) | Upload (Mbps) | AvailabilityCoverage |
|---|---|---|---|---|
| Astound | Fiber | 5,000 | 5,000 | 0.4% |
| AT&T | Fixed WirelessFixed Wireless | 100 | 20 | 3% |
| Viasat Carrier Services | Traditional SatelliteGSO Satellite | 25 | 3 | 3% |
Broadband Map's availability estimates are based on the census boundaries of San Marcos. Speed metrics capture internet providers' maximum advertised speeds. Both may be overoptimistic.
Broadband Map's listings of internet providers in San Marcos rely primarily on the November 2025 release from the FCC's Broadband Data Collection program (representing San Marcos ISPs' availability as of June 2025).