Internet Providers In San Marcos
San Marcos, CA has 15 residential internet options, including multiple fiber providers. Download speeds as fast as 5,000 Mbps are available.
Download and upload speeds are in megabits per second (Mbps). Enter an address to filter by availability.
Fiber
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| AT&T | 5,000 | 5,000 | 65% |
| Astound | 2,000 | 2,000 | 0.4% |
| Cox | 2,000 | 100 | 11% |
Cable
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| Cox | 2,000 | 500 | 87% |
| Spectrum | 1,000 | 35 | 59% |
DSL
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| AT&T | 100 | 20 | 21% |
Fixed Wireless
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| San Diego | 500 | 100 | 96% |
| Verizon | 300 | 20 | 99% |
| Lightwave | 150 | 100 | 67% |
| T-Mobile | 100 | 20 | 99% |
| MINTernet | 100 | 20 | 99% |
| AT&T | 100 | 20 | 13% |
Next-Gen Satellite
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| Starlink | 100 | 25 | 100% |
Old-School Satellite
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| HughesNet | 100 | 5 | 100% |
| Viasat | 100 | 3 | 100% |
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.
San Marcos Internet Options Map
Darker hexagons show areas of San Marcos with more internet options. Select a hexagon to view internet providers in a specific part of San Marcos.
Data Sourcing
BroadbandMap's listings of internet providers in San Marcos rely primarily on the May 2025 release from the FCC's Broadband Data Collection program (representing San Marcos ISPs' availability as of December 2024).
