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In Castlewood there are 5 residential Fixed Wireless providers covering 97.62% of the city. The average home can get speeds up to 142 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 Fixed Wireless internet providers in Castlewood, SD.
To see availability maps for all providers including fiber, cable, DSL, and more in Castlewood, SD please click below.
Castlewood, SD Availability Maps
Fixed Wireless Internet Service Providers in Castlewood
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 Castlewood are not shown.
Castlewood 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 Castlewood is fixed wireless internet available?
Fixed Wireless Internet Availability Key
Fixed Wireless is available in 97.62% of Castlewood. Areas in green have fixed wireless internet service, where areas in yellow or red may not. The most widely available provider is GigFire. Call one of the companies with service in Castlewood above to see who has service at your home.
How fast is fixed wireless internet in Castlewood?
The map below shows maximum fixed wireless internet speeds by area in Castlewood.
Fixed Wireless Internet Speed Key
The average Castlewood home can get up to 142 Mbps on their fixed wireless internet plan. The fastest fixed wireless download speed in the city is 150 Mbps, which 88.11% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 4.14% of homes can only purchase plans up to 25 Mbps. See the internet provider details below for info about their speed and coverage in Castlewood.
Fixed Wireless internet speeds tend to be faster in the central parts of Castlewood, and slower in the southeast areas of the city.
Is fixed wireless the fastest internet I can get in Castlewood?
The fastest internet for you may vary based on where in Castlewood you live. In general, fiber competes most often with fixed wireless in the city.
- Fiber is the fastest internet type for 99.91% of Castlewood homes.
- Cable is fastest for less than 1% 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 Castlewood homes.
Fixed Wireless Providers in Depth
Below you'll find which TV and internet providers offer service in Castlewood, along with details on where in Castlewood and at what speeds.
GigFire Fixed Wireless in Castlewood, SD
GigFire fixed wireless coverage
About 91.89%, or 1,043 people, have GigFire fixed wireless internet available to them in the city. The company covers the entire Castlewood area. GigFire is a large internet service provider internet service providers in the US, with internet service available in most of Castlewood.
GigFire fixed wireless download speeds
GigFire is below average when comparing download speeds to all other internet providers in Castlewood. Versus other fixed wireless providers in the area, GigFire fixed wireless is the fastest. There are 4 different maximum speeds throughout Castlewood. The fastest plan anyone in Castlewood can order from GigFire goes up to 150 Mbps, the slowest package only goes up to 99 Mbps, and the city-wide average maximum speed for Castlewood customers is up to 149 Mbps.
Show all download speeds
- 95.9% up to 150.0 Mbps
- 1.4% up to 140.0 Mbps
- 1.3% up to 100.0 Mbps
- 1.3% up to 99.0 Mbps
GigFire fixed wireless upload speeds
In Castlewood download speeds tend to be faster than than upload speeds for GigFire fixed wireless. Compared to other ISPs, GigFire is average where upload speeds are concerned, and the fastest compared to other Castlewood fixed wireless providers. GigFire 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 Castlewood is up to 130 Mbps. Some customers have slower plan choices, which only go up to 20 Mbps. On average, GigFire customers can get speeds up to 126 Mbps.
Show all upload speeds
- 95.9% up to 130.0 Mbps
- 1.4% up to 40.0 Mbps
- 2.7% up to 20.0 Mbps
T-Mobile Home Internet Fixed Wireless in Castlewood, SD
T-Mobile Home Internet fixed wireless coverage
About 58.06%, or 659 people, have T-Mobile Home Internet fixed wireless internet available to them in the city. The company covers the central, southeast, north, northeast, south, northwest, east, and southwest Castlewood area. T-Mobile Home Internet is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of Castlewood.
T-Mobile Home Internet fixed wireless download speeds
T-Mobile Home Internet is below average when comparing download speeds to all other internet providers in Castlewood. Versus other fixed wireless providers in the area, T-Mobile Home Internet fixed wireless is below average. There are 2 different maximum speeds throughout Castlewood. The fastest plan anyone in Castlewood can order from T-Mobile Home Internet goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the city-wide average maximum speed for Castlewood customers is up to 34 Mbps.
Show all download speeds
- 11.4% up to 100.0 Mbps
- 88.6% up to 25.0 Mbps
T-Mobile Home Internet fixed wireless upload speeds
In Castlewood download speeds tend to be faster than than upload speeds for T-Mobile Home Internet fixed wireless. Compared to other ISPs, T-Mobile Home Internet is below average where upload speeds are concerned, and below average compared to other Castlewood fixed wireless providers. T-Mobile Home Internet 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 Castlewood is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, T-Mobile Home Internet customers can get speeds up to 4.9 Mbps.
Show all upload speeds
- 11.4% up to 20.0 Mbps
- 88.6% up to 3.0 Mbps
EarthLink Fixed Wireless in Castlewood, SD
EarthLink fixed wireless coverage
About 8.46%, or 96 people, have EarthLink fixed wireless internet available to them in the city. The company covers the north and northwest Castlewood area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Castlewood.
EarthLink fixed wireless download speeds
EarthLink is below average when comparing download speeds to all other internet providers in Castlewood. Versus other fixed wireless providers in the area, EarthLink fixed wireless is one of the slowest. There are no different maximum speeds throughout Castlewood. The fastest plan anyone in Castlewood can order from EarthLink goes up to 25 Mbps, and all Castlewood customers can get this speed.
Show all download speeds
- 100.0% up to 25.0 Mbps
EarthLink fixed wireless upload speeds
In Castlewood download speeds tend to be faster than than upload speeds for EarthLink fixed wireless. Compared to other ISPs, EarthLink is below average where upload speeds are concerned, and one of the slowest compared to other Castlewood fixed wireless providers. EarthLink offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Castlewood is up to 3.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 3.0 Mbps
AT&T Fixed Wireless in Castlewood, SD
AT&T fixed wireless coverage
About 8.46%, or 96 people, have AT&T fixed wireless internet available to them in the city. The company covers the north and northwest Castlewood area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Castlewood.
AT&T fixed wireless download speeds
AT&T is below average when comparing download speeds to all other internet providers in Castlewood. Versus other fixed wireless providers in the area, AT&T fixed wireless is one of the slowest. There are no different maximum speeds throughout Castlewood. The fastest plan anyone in Castlewood can order from AT&T goes up to 25 Mbps, and all Castlewood customers can get this speed.
Show all download speeds
- 100.0% up to 25.0 Mbps
AT&T fixed wireless upload speeds
In Castlewood download speeds tend to be faster than than upload speeds for AT&T fixed wireless. Compared to other ISPs, AT&T is below average where upload speeds are concerned, and one of the slowest compared to other Castlewood fixed wireless providers. AT&T offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Castlewood is up to 3.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 3.0 Mbps
Midco Fixed Wireless in Castlewood, SD
Midco fixed wireless coverage
About 7.84%, or 89 people, have Midco fixed wireless internet available to them in the city. The company covers the northwest, northeast, and north Castlewood area. Midco is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Castlewood.
Midco fixed wireless download speeds
Midco is below average when comparing download speeds to all other internet providers in Castlewood. Versus other fixed wireless providers in the area, Midco fixed wireless is above average. There are no different maximum speeds throughout Castlewood. The fastest plan anyone in Castlewood can order from Midco goes up to 100 Mbps, and all Castlewood customers can get this speed.
Show all download speeds
- 100.0% up to 100.0 Mbps
Midco fixed wireless upload speeds
In Castlewood download speeds tend to be faster than than upload speeds for Midco fixed wireless. Compared to other ISPs, Midco is below average where upload speeds are concerned, and below average compared to other Castlewood fixed wireless providers. Midco offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Castlewood is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
Castlewood Fixed Wireless by Area
This information is most helpful to those looking for homes or considering moving to Castlewood or any of the areas nearby.
How does fixed wireless internet in Castlewood compare to the rest of South Dakota?
Fixed Wireless internet speeds in Castlewood are much faster versus the average speeds in South Dakota: 0.00 Mbps in South Dakota versus 142 Mbps in the city. The state has similar fixed wireless availability compared to the city. Average fixed wireless coverage in South Dakota is 0.00% versus 97.62% in Castlewood.
What zip codes have fixed wireless internet?
Fixed Wireless internet coverage varies by zip code and neighborhood. Some examples in or around Castlewood are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does fixed wireless 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
- Kones Corner, SD: less fixed wireless coverage, slower speeds
- Stone Bridge, SD: less fixed wireless coverage, slower speeds
- Estelline, SD: more fixed wireless coverage, faster speeds
- Thomas, SD: less fixed wireless coverage, slower speeds
- Goodwin, SD: less fixed wireless coverage, slower speeds
- Hayti, SD: more fixed wireless coverage, slower speeds
- Lake Poinsett, SD: more fixed wireless coverage, faster speeds
- Foley, SD: more fixed wireless coverage, faster speeds
- Kranzburg, SD: more fixed wireless coverage, faster speeds
- Watertown, SD: more fixed wireless coverage, faster speeds
Cities with Similar Populations
- Dover Beaches South, NJ: more fixed wireless coverage, faster speeds
- Walhonding, OH: more fixed wireless coverage, faster speeds
- Waterford, VT: more fixed wireless coverage, slower speeds
- Faucett, MO: more fixed wireless coverage, faster speeds
- Waynoka, OK: less fixed wireless coverage, faster speeds
- Endeavor, WI: more fixed wireless coverage, faster speeds
- Elwood, KS: more fixed wireless coverage, faster speeds
- East Victor, NY: more fixed wireless coverage, faster speeds
- Dysart, PA: less fixed wireless coverage, faster speeds
- Wagners Lake, NE: more fixed wireless coverage, faster speeds