In Castle Hills there are 4 residential Fiber providers covering 95.25% of the city. The average home can get speeds up to 4,957 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 Castle Hills, TX.
To see availability maps for all providers including fiber, cable, DSL, and more in Castle Hills, TX please click below.
Castle Hills, TX Availability Maps
Fiber Internet Service Providers in Castle Hills
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 Castle Hills are not shown.
Castle Hills 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 Castle Hills is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 95.25% of Castle Hills. 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 Castle Hills above to see who has service at your home.
How fast is fiber internet in Castle Hills?
The map below shows maximum fiber internet speeds by area in Castle Hills.
Fiber Internet Speed Key
The average Castle Hills home can get up to 4,957 Mbps on their fiber internet plan. The fastest fiber download speed in the city is 5,000 Mbps, which 94.14% 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 1,000 Mbps. See the internet provider details below for info about their speed and coverage in Castle Hills.
Fiber internet speeds tend to be faster in the southeast parts of Castle Hills, and slower in the west areas of the city.
Is fiber the fastest internet I can get in Castle Hills?
The fastest internet for you may vary based on where in Castle Hills you live. In general, cable competes most often with fiber in the city.
- Fiber is the fastest internet type for 95.25% of Castle Hills homes.
- Cable is fastest for 4.75% 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 less than 1% of Castle Hills homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in Castle Hills, along with details on where in Castle Hills and at what speeds.
EarthLink Fiber in Castle Hills, TX
EarthLink fiber coverage
About 94.62%, or 3,764 people, have EarthLink fiber internet available to them in the city. The company covers the entire Castle Hills area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in most of Castle Hills.
EarthLink fiber download speeds
EarthLink is one of the fastest when comparing download speeds to all other internet providers in Castle Hills. Versus other fiber providers in the area, EarthLink fiber is one of the fastest. There are 2 different maximum speeds throughout Castle Hills. The fastest plan anyone in Castle Hills can order from EarthLink goes up to 5,000 Mbps, the slowest package only goes up to 1,000 Mbps, and the city-wide average maximum speed for Castle Hills customers is up to 4,980 Mbps.
Show all download speeds
- 99.5% up to 5,000.0 Mbps
- 0.5% up to 1,000.0 Mbps
EarthLink fiber upload speeds
In Castle Hills download speeds tend to be equal to than upload speeds for EarthLink fiber. Compared to other ISPs, EarthLink is one of the fastest where upload speeds are concerned, and one of the fastest compared to other Castle Hills fiber providers. EarthLink 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 Castle Hills 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 4,980 Mbps.
Show all upload speeds
- 99.5% up to 5,000.0 Mbps
- 0.5% up to 1,000.0 Mbps
AT&T Fiber in Castle Hills, TX
AT&T fiber coverage
About 94.62%, or 3,764 people, have AT&T fiber internet available to them in the city. The company covers the entire Castle Hills area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in most of Castle Hills.
AT&T fiber download speeds
AT&T is one of the fastest when comparing download speeds to all other internet providers in Castle Hills. Versus other fiber providers in the area, AT&T fiber is one of the fastest. There are 2 different maximum speeds throughout Castle Hills. The fastest plan anyone in Castle Hills can order from AT&T goes up to 5,000 Mbps, the slowest package only goes up to 1,000 Mbps, and the city-wide average maximum speed for Castle Hills customers is up to 4,980 Mbps.
Show all download speeds
- 99.5% up to 5,000.0 Mbps
- 0.5% up to 1,000.0 Mbps
AT&T fiber upload speeds
In Castle Hills download speeds tend to be equal to than upload speeds for AT&T fiber. Compared to other ISPs, AT&T is one of the fastest where upload speeds are concerned, and one of the fastest compared to other Castle Hills fiber providers. AT&T 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 Castle Hills 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 4,980 Mbps.
Show all upload speeds
- 99.5% up to 5,000.0 Mbps
- 0.5% up to 1,000.0 Mbps
Spectrum Fiber in Castle Hills, TX
Spectrum fiber coverage
About 5.20%, or 207 people, have Spectrum fiber internet available to them in the city. The company covers the east Castle Hills 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 Castle Hills.
Spectrum fiber download speeds
Spectrum is below average when comparing download speeds to all other internet providers in Castle Hills. Versus other fiber providers in the area, Spectrum fiber is the slowest. There are no different maximum speeds throughout Castle Hills. The fastest plan anyone in Castle Hills can order from Spectrum goes up to 1,000 Mbps, and all Castle Hills customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Spectrum fiber upload speeds
In Castle Hills 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 Castle Hills fiber providers. Spectrum offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Castle Hills is up to 35 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 35.0 Mbps
Astound Broadband Fiber in Castle Hills, TX
Astound Broadband fiber coverage
About 4.02%, or 160 people, have Astound Broadband fiber internet available to them in the city. The company covers the north and west Castle Hills area. Astound Broadband is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Castle Hills.
Astound Broadband fiber download speeds
Astound Broadband is above average when comparing download speeds to all other internet providers in Castle Hills. Versus other fiber providers in the area, Astound Broadband fiber is below average. There are no different maximum speeds throughout Castle Hills. The fastest plan anyone in Castle Hills can order from Astound Broadband goes up to 1,500 Mbps, and all Castle Hills customers can get this speed.
Show all download speeds
- 100.0% up to 1,500.0 Mbps
Astound Broadband fiber upload speeds
In Castle Hills 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 Castle Hills fiber providers. Astound Broadband offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Castle Hills is up to 1,500 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,500.0 Mbps
Castle Hills Fiber by Area
This information is most helpful to those looking for homes or considering moving to Castle Hills or any of the areas nearby.
How does fiber internet in Castle Hills compare to the rest of Texas?
Fiber internet speeds in Castle Hills are much faster versus the average speeds in Texas: 0.00 Mbps in Texas versus 4,957 Mbps in the city. The state has similar fiber availability compared to the city. Average fiber coverage in Texas is 0.00% versus 95.25% in Castle Hills.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around Castle Hills 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
- Balcones Heights, TX: less fiber coverage, slower speeds
- San Antonio, TX: less fiber coverage, slower speeds
- Olmos Park, TX: more fiber coverage, slower speeds
- Alamo Heights, TX: more fiber coverage, slower speeds
- Hill Country Village, TX: less fiber coverage, slower speeds
- Terrell Hills, TX: more fiber coverage, slower speeds
- Shavano Park, TX: less fiber coverage, slower speeds
- Hollywood Park, TX: more fiber coverage, slower speeds
- Leon Valley, TX: more fiber coverage, faster speeds
- Windcrest, TX: more fiber coverage, faster speeds
Cities with Similar Populations
- Vernon, AL: more fiber coverage, slower speeds
- North Hampton, NH: less fiber coverage, slower speeds
- North Shore, LA: more fiber coverage, slower speeds
- Northlake, SC: less fiber coverage, slower speeds
- Jackson, MN: less fiber coverage, slower speeds
- East Bernard, TX: less fiber coverage, slower speeds
- Corning, AR: more fiber coverage, slower speeds
- Chester, WV: less fiber coverage, slower speeds
- Carefree, AZ: less fiber coverage, slower speeds
- Cape Charles, VA: less fiber coverage, slower speeds