In 78638 there is 1 residential DSL provider covering 49.30% of the zip. The average home can get speeds up to 10 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 DSL internet providers in 78638, TX.
To see availability maps for all providers including fiber, cable, DSL, and more in 78638, TX please click below.
DSL Internet Service Provider in 78638
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 78638 are not shown.
78638 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 78638 is DSL internet available?
DSL Internet Availability Key
DSL is available in 49.30% of 78638. Areas in green have DSL internet service, where areas in yellow or red may not. The most widely available provider is GVTC. Call one of the companies with service in 78638 above to see who has service at your home.
How fast is DSL internet in 78638?
The map below shows maximum DSL internet speeds by area in 78638.
DSL Internet Speed Key
The average 78638 home can get up to 10 Mbps on their DSL internet plan. The fastest DSL download speed in the zip is 10 Mbps, which 49.30% of residents can get.
Is DSL the fastest internet I can get in 78638?
The fastest internet for you may vary based on where in 78638 you live. In general, fiber competes most often with DSL in the zip.
- Fiber is the fastest internet type for 52.40% of 78638 homes.
- Cable is fastest for less than 1% of the zip.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 43.99%.
- Satellite internet may be the only option for 3.60% of 78638 homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in 78638, along with details on where in 78638 and at what speeds.
GVTC DSL in 78638, TX
GVTC DSL coverage
About 49.30%, or 1,190 people, have GVTC DSL internet available to them in the zip. The company covers the south, west, southeast, central, northwest, north, and southwest 78638 area. GVTC is a large internet service provider internet service providers in the US, with internet service available in some of 78638.
GVTC DSL download speeds
GVTC is the slowest when comparing download speeds to all other internet providers in 78638. Versus other DSL providers in the area, GVTC DSL is the fastest. There are no different maximum speeds throughout 78638. The fastest plan anyone in 78638 can order from GVTC goes up to 10 Mbps, and all 78638 customers can get this speed.
Show all download speeds
- 100.0% up to 10.0 Mbps
GVTC DSL upload speeds
In 78638 download speeds tend to be faster than than upload speeds for GVTC DSL. Compared to other ISPs, GVTC is the slowest where upload speeds are concerned, and the fastest compared to other 78638 DSL providers. GVTC offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 78638 is up to 1.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1.0 Mbps
78638 DSL by Area
This information is most helpful to those looking for homes or considering moving to 78638 or any of the areas nearby.
How does DSL internet in 78638 compare to the rest of Texas?
DSL internet speeds in 78638 are much faster versus the average speeds in Texas: 0.00 Mbps in Texas versus 10 Mbps in the zip. The state has similar DSL availability compared to the zip. Average DSL coverage in Texas is 0.00% versus 49.30% in 78638.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around 78638 are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does DSL internet look like in other zip codes?
Below are zip codes nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Zip Codes
- 78648, TX: more DSL coverage, similar speeds
- 78155, TX: more DSL coverage, faster speeds
- 78123, TX: more DSL coverage, faster speeds
- 78130, TX: more DSL coverage, faster speeds
- 78632, TX: more DSL coverage, similar speeds
- 78124, TX: more DSL coverage, faster speeds
- 78132, TX: more DSL coverage, faster speeds
- 78629, TX: less DSL coverage, similar speeds
- 78108, TX: more DSL coverage, faster speeds
- 78154, TX: more DSL coverage, faster speeds
Zip Codes with Similar Populations
- 14873, NY: less DSL coverage, faster speeds
- 16637, PA: more DSL coverage, faster speeds
- 68849, NE: more DSL coverage, similar speeds
- 40068, KY: more DSL coverage, faster speeds
- 40935, KY: more DSL coverage, faster speeds
- 04353, ME: more DSL coverage, faster speeds
- 53044, WI: more DSL coverage, faster speeds
- 55074, MN: more DSL coverage, faster speeds
- 56750, MN: less DSL coverage, faster speeds
- 57744, SD: more DSL coverage, faster speeds