Coverage · ZIP 78666
Internet Providers in San Marcos, TX (78666)
There are 21 internet providers available in San Marcos, TX (ZIP 78666), including Hotwire Communications, Frontier Fiber, Astound Fiber. Compare each provider below by technology, maximum advertised speed, and area coverage, then call (833) 261-0564 for help choosing a plan. Coverage data is sourced from the FCC National Broadband Map.
Internet providers in San Marcos, TX (ZIP 78666)
There are 21 residential internet providers available in San Marcos, TX (ZIP 78666), including Hotwire Communications, Frontier Fiber, Astound Fiber. The table below lists each provider with its technology type, maximum advertised speeds, and area coverage, sourced from the FCC National Broadband Map.
| Provider | Technology | Max download | Max upload | Area coverage |
|---|---|---|---|---|
| Hotwire Communications | Fiber | 8 Gbps | 8 Gbps | 1% |
| Frontier Fiber | Fiber | 7 Gbps | 7 Gbps | 0% |
| Astound Fiber | Fiber | 1.5 Gbps | 1.5 Gbps | 23% |
| Brightspeed Fiber | Fiber | 1 Gbps | 1 Gbps | 6% |
| Guadalupe Valley Electric Coop | Fiber | 1 Gbps | 1 Gbps | 1% |
| GVTC | Fiber | 1 Gbps | 250 Mbps | 0% |
| Astound | Cable | 1.5 Gbps | 50 Mbps | 30% |
| VTX | 5G Home Internet | 400 Mbps | 50 Mbps | 45% |
| Verizon 5G Home | 5G Home Internet | 300 Mbps | 30 Mbps | 70% |
| T-Mobile Home Internet | 5G Home Internet | 100 Mbps | 20 Mbps | 71% |
| AT&T Internet Air | 5G Home Internet | 100 Mbps | 20 Mbps | 47% |
| VTX | Fixed Wireless | 400 Mbps | 50 Mbps | 42% |
| Guadalupe Valley Electric Coop | Fixed Wireless | 100 Mbps | 20 Mbps | 9% |
| Spry Air Fiber | Fixed Wireless | 100 Mbps | 50 Mbps | 0% |
| Hill Country Networks | Fixed Wireless | 25 Mbps | 5 Mbps | 0% |
| AnvilCommunications | Fixed Wireless | 10 Mbps | 1 Mbps | 1% |
| Starlink | Satellite | 280 Mbps | 30 Mbps | 100% |
| Viasat | Satellite | 150 Mbps | 3 Mbps | 100% |
| HughesNet | Satellite | 100 Mbps | 5 Mbps | 100% |
| Brightspeed | DSL | 100 Mbps | 10 Mbps | 62% |
| GVTC | DSL | 10 Mbps | 1 Mbps | 0% |
Internet in San Marcos, TX — common questions
How many internet providers are available in San Marcos, TX?
There are 21 internet providers available in San Marcos, TX (ZIP 78666), including Hotwire Communications, Frontier Fiber, Astound Fiber. Availability varies by exact address.
What is the fastest internet available in 78666?
Hotwire Communications offers the highest advertised download speed in San Marcos, TX at up to 8 Gbps. Actual speeds depend on the plan and your address.
How do I check internet availability at my address in San Marcos, TX?
Enter your ZIP code on Ziatan to see every provider serving your block, then call (833) 261-0564 for help comparing plans and pricing — free, with no signup required.