Coverage · ZIP 78666
Internet providers in San Marcos, TX 78666
23 providers are on file for this ZIP with the FCC (December 2024), using Fiber, Cable, 5G Home Internet, Fixed Wireless, Satellite, DSL. The share-of-ZIP column shows how much of the area each one reaches; check your street address, or call (877) 543-8021.
Every filing for San Marcos, TX (ZIP 78666)
23 residential internet providers filed service in San Marcos, TX (ZIP 78666) with the FCC (December 2024). T-Mobile Home Internet reaches the most of the ZIP, about 71%. The fastest filing is Hotwire Communications at up to 8 Gbps, covering under 1%. The table lists every filing with its technology, top speeds and share of the ZIP.
| Provider | Technology | Fastest down | Fastest up | Share of ZIP |
|---|---|---|---|---|
| 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% |
| Spectrum Fiber | Fiber-powered | 1 Gbps | 500 Mbps | 18% |
| 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% |
| Spectrum | Fiber-powered | 1 Gbps | 35 Mbps | 66% |
| 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 serve ZIP 78666?
23 providers have residential service on file for San Marcos, TX (ZIP 78666), among them Hotwire Communications, Frontier Fiber, Astound Fiber. A filing covers part of the ZIP, not necessarily every street, so the provider confirms your exact address before an order.
Which provider reaches the most of 78666?
T-Mobile Home Internet has the widest footprint on file, about 71% of the ZIP’s census blocks, using 5g home internet. Satellite is left out of this comparison because it is filed everywhere.
What is the fastest internet in 78666?
Hotwire Communications files the top download speed, up to 8 Gbps, across about under 1% of the ZIP. That is the fastest tier filed for the area, not a plan sold at every address.
How do I check my own address in San Marcos, TX?
Search the ZIP to see every filing with indicative starting prices, then call (877) 543-8021. We check the street address with the provider and, for providers we sell, place the order. There is no charge and no account.
Coverage data: FCC Broadband Data Collection (December 2024). Availability is decided address by address; providers confirm serviceability when you order. Satellite internet is sold nationwide, but each install has to qualify on site — a clear view of the sky and a place to mount the dish.