In San Marcos there are 4 residential Fiber providers covering 47.97% of the city. The average home can get speeds up to 1,583 Mbps. Note that we may have a financial relationship with some of the providers below. This does not influence rankings, and helps us provide high-quality detailed information for free.
This page contains all Fiber internet providers in San Marcos, TX.
To see availability maps for all providers including fiber, cable, DSL, and more in San Marcos, TX please click below.
San Marcos, TX Availability Maps
Fiber Internet Service Providers in San Marcos
Data updated 11/14/2025, based on FCC data from 12/31/2024. This is the most current data available as of .
To avoid wasting your time, providers with less than 1% coverage in San Marcos are not shown.
San Marcos Satellite TV & Internet Providers
DISH Satellite TV
DIRECTV Satellite TV
Not sure whether to choose Dish or DIRECTV? For most people most of the time we recommend DISH. But click here to learn more.
Viasat Satellite Internet
Where in San Marcos is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 47.97% of San Marcos. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is Astound Broadband. Call one of the companies with service in San Marcos above to see who has service at your home.
How fast is fiber internet in San Marcos?
The map below shows maximum fiber internet speeds by area in San Marcos.
Fiber Internet Speed Key
The average San Marcos home can get up to 1,583 Mbps on their fiber internet plan. The fastest fiber download speed in the city is 8,000 Mbps, which less than 1% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, less than 1% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in San Marcos.
Fiber internet speeds tend to be faster in the northwest parts of San Marcos, and slower in the east areas of the city.
Is fiber the fastest internet I can get in San Marcos?
The fastest internet for you may vary based on where in San Marcos you live. In general, cable competes most often with fiber in the city.
- Fiber is the fastest internet type for 42.92% of San Marcos homes.
- Cable is fastest for 49.28% of the city.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for less than 1%.
- Satellite internet may be the only option for 7.16% of San Marcos homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in San Marcos, along with details on where in San Marcos and at what speeds.
Astound Broadband Fiber in San Marcos, TX
Astound Broadband fiber coverage
About 34.96%, or 28,224 people, have Astound Broadband fiber internet available to them in the city. The company covers the entire San Marcos area. Astound Broadband is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of San Marcos.
Astound Broadband fiber download speeds
Astound Broadband is above average when comparing download speeds to all other internet providers in San Marcos. Versus other fiber providers in the area, Astound Broadband fiber is below average. There are no different maximum speeds throughout San Marcos. The fastest plan anyone in San Marcos can order from Astound Broadband goes up to 1,500 Mbps, and all San Marcos customers can get this speed.
Show all download speeds
- 100.0% up to 1,500.0 Mbps
Astound Broadband fiber upload speeds
In San Marcos download speeds tend to be equal to than upload speeds for Astound Broadband fiber. Compared to other ISPs, Astound Broadband is above average where upload speeds are concerned, and below average compared to other San Marcos fiber providers. Astound Broadband offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in San Marcos is up to 1,500 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,500.0 Mbps
Brightspeed Fiber in San Marcos, TX
Brightspeed fiber coverage
About 11.29%, or 9,116 people, have Brightspeed fiber internet available to them in the city. The company covers the northeast, southwest, south, east, north, and central San Marcos area. Brightspeed is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of San Marcos.
Brightspeed fiber download speeds
Brightspeed is below average when comparing download speeds to all other internet providers in San Marcos. Versus other fiber providers in the area, Brightspeed fiber is the slowest. There are 3 different maximum speeds throughout San Marcos. The fastest plan anyone in San Marcos can order from Brightspeed goes up to 1,000 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for San Marcos customers is up to 983 Mbps.
Show all download speeds
- 75.3% up to 1,000.0 Mbps
- 24.5% up to 940.0 Mbps
- 0.2% up to 10.0 Mbps
Brightspeed fiber upload speeds
In San Marcos download speeds tend to be faster than than upload speeds for Brightspeed fiber. Compared to other ISPs, Brightspeed is below average where upload speeds are concerned, and below average compared to other San Marcos fiber providers. Brightspeed offers 3 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in San Marcos is up to 1,000 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Brightspeed customers can get speeds up to 983 Mbps.
Show all upload speeds
- 75.3% up to 1,000.0 Mbps
- 24.5% up to 940.0 Mbps
- 0.2% up to 1.0 Mbps
Spectrum Fiber in San Marcos, TX
Spectrum fiber coverage
About 9.74%, or 7,864 people, have Spectrum fiber internet available to them in the city. The company covers the northeast, northwest, south, north, and southwest San Marcos area. Spectrum is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of San Marcos.
Spectrum fiber download speeds
Spectrum is below average when comparing download speeds to all other internet providers in San Marcos. Versus other fiber providers in the area, Spectrum fiber is below average. There are no different maximum speeds throughout San Marcos. The fastest plan anyone in San Marcos can order from Spectrum goes up to 1,000 Mbps, and all San Marcos customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Spectrum fiber upload speeds
In San Marcos download speeds tend to be faster than than upload speeds for Spectrum fiber. Compared to other ISPs, Spectrum is below average where upload speeds are concerned, and the slowest compared to other San Marcos fiber providers. Spectrum offers 2 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in San Marcos is up to 500 Mbps. Some customers have slower plan choices, which only go up to 35 Mbps. On average, Spectrum customers can get speeds up to 180 Mbps.
Show all upload speeds
- 31.3% up to 500.0 Mbps
- 68.7% up to 35.0 Mbps
Hotwire Communications Fiber in San Marcos, TX
Hotwire Communications fiber coverage
About 2.43%, or 1,960 people, have Hotwire Communications fiber internet available to them in the city. The company covers the northwest, northeast, and southwest San Marcos area. Hotwire Communications is a large internet service provider internet service providers in the US, with internet service available in a very small piece of San Marcos.
Hotwire Communications fiber download speeds
Hotwire Communications is above average when comparing download speeds to all other internet providers in San Marcos. Versus other fiber providers in the area, Hotwire Communications fiber is above average. There are 2 different maximum speeds throughout San Marcos. The fastest plan anyone in San Marcos can order from Hotwire Communications goes up to 8,000 Mbps, the slowest package only goes up to 2,500 Mbps, and the city-wide average maximum speed for San Marcos customers is up to 4,259 Mbps.
Show all download speeds
- 32.0% up to 8,000.0 Mbps
- 68.0% up to 2,500.0 Mbps
Hotwire Communications fiber upload speeds
In San Marcos download speeds tend to be equal to than upload speeds for Hotwire Communications fiber. Compared to other ISPs, Hotwire Communications is above average where upload speeds are concerned, and above average compared to other San Marcos fiber providers. Hotwire Communications offers 2 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in San Marcos is up to 8,000 Mbps. Some customers have slower plan choices, which only go up to 2,500 Mbps. On average, Hotwire Communications customers can get speeds up to 4,259 Mbps.
Show all upload speeds
- 32.0% up to 8,000.0 Mbps
- 68.0% up to 2,500.0 Mbps
San Marcos Fiber by Area
This information is most helpful to those looking for homes or considering moving to San Marcos or any of the areas nearby.
How does fiber internet in San Marcos compare to the rest of Texas?
Fiber internet speeds in San Marcos are much faster versus the average speeds in Texas: 0.00 Mbps in Texas versus 1,583 Mbps in the city. The state has similar fiber availability compared to the city. Average fiber coverage in Texas is 0.00% versus 47.97% in San Marcos.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around San Marcos are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does fiber internet look like in other cities?
Below are cities nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Cities
- Hays, TX: more fiber coverage, slower speeds
- Redwood, TX: more fiber coverage, faster speeds
- Reedville, TX: more fiber coverage, slower speeds
- Martindale, TX: less fiber coverage, slower speeds
- Staples, TX: less fiber coverage, faster speeds
- Kyle, TX: more fiber coverage, faster speeds
- Zorn, TX: more fiber coverage, slower speeds
- Uhland, TX: more fiber coverage, faster speeds
- Fentress, TX: more fiber coverage, slower speeds
- Sattler, TX: more fiber coverage, slower speeds
Cities with Similar Populations
- Charleston, WV: more fiber coverage, faster speeds
- Camden, NJ: more fiber coverage, faster speeds
- Carson, CA: more fiber coverage, faster speeds
- Caguas, PR: more fiber coverage, slower speeds
- Charlottesville, VA: more fiber coverage, slower speeds
- Chicago, IL: less fiber coverage, faster speeds
- Canoga Park, CA: less fiber coverage, faster speeds
- Carrollton, TX: more fiber coverage, faster speeds
- Cambridge, MA: less fiber coverage, slower speeds
- Camarillo, CA: more fiber coverage, faster speeds