In 78503 there are 4 residential Fiber providers covering 29.19% of the zip. The average home can get speeds up to 4,177 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 78503, TX.
To see availability maps for all providers including fiber, cable, DSL, and more in 78503, TX please click below.
Fiber Internet Service Providers in 78503
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 78503 are not shown.
78503 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 78503 is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 29.19% of 78503. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is AT&T. Call one of the companies with service in 78503 above to see who has service at your home.
How fast is fiber internet in 78503?
The map below shows maximum fiber internet speeds by area in 78503.
Fiber Internet Speed Key
The average 78503 home can get up to 4,177 Mbps on their fiber internet plan. The fastest fiber download speed in the zip is 5,000 Mbps, which 23.18% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 6.01% of homes can only purchase plans up to 1,000 Mbps. See the internet provider details below for info about their speed and coverage in 78503.
Fiber internet speeds tend to be faster in the east parts of 78503, and slower in the northeast areas of the zip.
Is fiber the fastest internet I can get in 78503?
The fastest internet for you may vary based on where in 78503 you live. In general, cable competes most often with fiber in the zip.
- Fiber is the fastest internet type for 29.19% of 78503 homes.
- Cable is fastest for 70.29% of the zip.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for less than 1%.
- Satellite internet may be the only option for less than 1% of 78503 homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in 78503, along with details on where in 78503 and at what speeds.
EarthLink Fiber in 78503, TX
EarthLink fiber coverage
About 16.44%, or 3,881 people, have EarthLink fiber internet available to them in the zip. The company covers the east, north, south, central, and northwest 78503 area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of 78503.
EarthLink fiber download speeds
EarthLink is above average when comparing download speeds to all other internet providers in 78503. Versus other fiber providers in the area, EarthLink fiber is above average. There are 2 different maximum speeds throughout 78503. The fastest plan anyone in 78503 can order from EarthLink goes up to 5,000 Mbps, the slowest package only goes up to 1,000 Mbps, and the zip-wide average maximum speed for 78503 customers is up to 4,015 Mbps.
Show all download speeds
- 75.4% up to 5,000.0 Mbps
- 24.6% up to 1,000.0 Mbps
EarthLink fiber upload speeds
In 78503 download speeds tend to be equal to than upload speeds for EarthLink fiber. Compared to other ISPs, EarthLink is above average where upload speeds are concerned, and above average compared to other 78503 fiber providers. EarthLink offers 2 different upload speeds across the zip, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in 78503 is up to 5,000 Mbps. Some customers have slower plan choices, which only go up to 1,000 Mbps. On average, EarthLink customers can get speeds up to 4,015 Mbps.
Show all upload speeds
- 75.4% up to 5,000.0 Mbps
- 24.6% up to 1,000.0 Mbps
AT&T Fiber in 78503, TX
AT&T fiber coverage
About 16.44%, or 3,881 people, have AT&T fiber internet available to them in the zip. The company covers the east, north, south, central, and northwest 78503 area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of 78503.
AT&T fiber download speeds
AT&T is above average when comparing download speeds to all other internet providers in 78503. Versus other fiber providers in the area, AT&T fiber is above average. There are 2 different maximum speeds throughout 78503. The fastest plan anyone in 78503 can order from AT&T goes up to 5,000 Mbps, the slowest package only goes up to 1,000 Mbps, and the zip-wide average maximum speed for 78503 customers is up to 4,015 Mbps.
Show all download speeds
- 75.4% up to 5,000.0 Mbps
- 24.6% up to 1,000.0 Mbps
AT&T fiber upload speeds
In 78503 download speeds tend to be equal to than upload speeds for AT&T fiber. Compared to other ISPs, AT&T is above average where upload speeds are concerned, and above average compared to other 78503 fiber providers. AT&T offers 2 different upload speeds across the zip, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in 78503 is up to 5,000 Mbps. Some customers have slower plan choices, which only go up to 1,000 Mbps. On average, AT&T customers can get speeds up to 4,015 Mbps.
Show all upload speeds
- 75.4% up to 5,000.0 Mbps
- 24.6% up to 1,000.0 Mbps
Smartcom Telephone Fiber in 78503, TX
Smartcom Telephone fiber coverage
About 10.82%, or 2,555 people, have Smartcom Telephone fiber internet available to them in the zip. The company covers the south, west, northwest, east, north, southeast, southwest, and northeast 78503 area. Smartcom Telephone is a large internet service provider internet service providers in the US, with internet service available in a very small piece of 78503.
Smartcom Telephone fiber download speeds
Smartcom Telephone is the fastest when comparing download speeds to all other internet providers in 78503. Versus other fiber providers in the area, Smartcom Telephone fiber is the fastest. There are no different maximum speeds throughout 78503. The fastest plan anyone in 78503 can order from Smartcom Telephone goes up to 5,000 Mbps, and all 78503 customers can get this speed.
Show all download speeds
- 100.0% up to 5,000.0 Mbps
Smartcom Telephone fiber upload speeds
In 78503 download speeds tend to be equal to than upload speeds for Smartcom Telephone fiber. Compared to other ISPs, Smartcom Telephone is the fastest where upload speeds are concerned, and the fastest compared to other 78503 fiber providers. Smartcom Telephone offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 78503 is up to 5,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 5,000.0 Mbps
Spectrum Fiber in 78503, TX
Spectrum fiber coverage
About 5.51%, or 1,300 people, have Spectrum fiber internet available to them in the zip. The company covers the northeast and west 78503 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 78503.
Spectrum fiber download speeds
Spectrum is below average when comparing download speeds to all other internet providers in 78503. Versus other fiber providers in the area, Spectrum fiber is the slowest. There are no different maximum speeds throughout 78503. The fastest plan anyone in 78503 can order from Spectrum goes up to 1,000 Mbps, and all 78503 customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Spectrum fiber upload speeds
In 78503 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 78503 fiber providers. Spectrum offers 2 different upload speeds across the zip, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in 78503 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 285 Mbps.
Show all upload speeds
- 53.8% up to 500.0 Mbps
- 46.2% up to 35.0 Mbps
78503 Fiber by Area
This information is most helpful to those looking for homes or considering moving to 78503 or any of the areas nearby.
How does fiber internet in 78503 compare to the rest of Texas?
Fiber internet speeds in 78503 are much faster versus the average speeds in Texas: 0.00 Mbps in Texas versus 4,177 Mbps in the zip. The state has similar fiber availability compared to the zip. Average fiber coverage in Texas is 0.00% versus 29.19% in 78503.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around 78503 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 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
- 78501, TX: more fiber coverage, faster speeds
- 78577, TX: more fiber coverage, faster speeds
- 78557, TX: less fiber coverage, faster speeds
- 78572, TX: more fiber coverage, faster speeds
- 78504, TX: more fiber coverage, faster speeds
- 78589, TX: more fiber coverage, slower speeds
- 78573, TX: more fiber coverage, faster speeds
- 78516, TX: more fiber coverage, faster speeds
- 78539, TX: more fiber coverage, slower speeds
- 78574, TX: more fiber coverage, slower speeds
Zip Codes with Similar Populations
- 98642, WA: more fiber coverage, slower speeds
- 55412, MN: more fiber coverage, faster speeds
- 40160, KY: more fiber coverage, slower speeds
- 40047, KY: more fiber coverage, slower speeds
- 02021, MA: more fiber coverage, slower speeds
- 78757, TX: more fiber coverage, faster speeds
- 80528, CO: more fiber coverage, faster speeds
- 81501, CO: more fiber coverage, slower speeds
- 85350, AZ: more fiber coverage, slower speeds
- 89134, NV: less fiber coverage, slower speeds