In Promise there are 2 residential Fiber providers covering 98.39% of the city. The average home can get speeds up to 311 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 Promise, SD.
To see availability maps for all providers including fiber, cable, DSL, and more in Promise, SD please click below.
Fiber Internet Service Providers in Promise
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 Promise are not shown.
Promise 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 Promise is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 98.39% of Promise. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is CRST. Call one of the companies with service in Promise above to see who has service at your home.
How fast is fiber internet in Promise?
The map below shows maximum fiber internet speeds by area in Promise.
Fiber Internet Speed Key
The average Promise home can get up to 311 Mbps on their fiber internet plan. The fastest fiber download speed in the city is 1,000 Mbps, which 8.06% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 90.32% of homes can only purchase plans up to 250 Mbps. See the internet provider details below for info about their speed and coverage in Promise.
Is fiber the fastest internet I can get in Promise?
The fastest internet for you may vary based on where in Promise you live. In general, satellite competes most often with fiber in the city.
- Fiber is the fastest internet type for 98.39% of Promise 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 1.61% of Promise homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in Promise, along with details on where in Promise and at what speeds.
Cheyenne River Sioux Tribe Telephone Authority (CRST) Fiber in Promise, SD
CRST fiber coverage
About 90.32%, or 56 people, have CRST fiber internet available to them in the city. The company covers the entire Promise area. CRST is a small internet service provider internet service providers in the US, with internet service available in most of Promise.
Cheyenne River Sioux Tribe Telephone Authority (CRST) fiber download speeds
CRST is below average when comparing download speeds to all other internet providers in Promise. Versus other fiber providers in the area, CRST fiber is the slowest. There are no different maximum speeds throughout Promise. The fastest plan anyone in Promise can order from CRST goes up to 250 Mbps, and all Promise customers can get this speed.
Show all download speeds
- 100.0% up to 250.0 Mbps
Cheyenne River Sioux Tribe Telephone Authority (CRST) fiber upload speeds
In Promise download speeds tend to be faster than than upload speeds for CRST fiber. Compared to other ISPs, CRST is below average where upload speeds are concerned, and the slowest compared to other Promise fiber providers. CRST offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Promise is up to 100 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 100.0 Mbps
WRT Fiber in Promise, SD
WRT fiber coverage
About 8.06%, or 5 people, have WRT fiber internet available to them in the city. The company covers the entire Promise area. WRT is an average-sized internet service provider internet service providers in the US, with internet service available in a very small piece of Promise.
WRT fiber download speeds
WRT is the fastest when comparing download speeds to all other internet providers in Promise. Versus other fiber providers in the area, WRT fiber is the fastest. There are no different maximum speeds throughout Promise. The fastest plan anyone in Promise can order from WRT goes up to 1,000 Mbps, and all Promise customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
WRT fiber upload speeds
In Promise download speeds tend to be equal to than upload speeds for WRT fiber. Compared to other ISPs, WRT is the fastest where upload speeds are concerned, and the fastest compared to other Promise fiber providers. WRT offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Promise is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
Promise Fiber by Area
This information is most helpful to those looking for homes or considering moving to Promise or any of the areas nearby.
How does fiber internet in Promise compare to the rest of South Dakota?
Fiber internet speeds in Promise are much faster versus the average speeds in South Dakota: 0.00 Mbps in South Dakota versus 311 Mbps in the city. The state has similar fiber availability compared to the city. Average fiber coverage in South Dakota is 0.00% versus 98.39% in Promise.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around Promise 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
- North Riverside, SD: more fiber coverage, faster speeds
- Akaska, SD: more fiber coverage, faster speeds
- Fayette, SD: more fiber coverage, faster speeds
- La Plant, SD: more fiber coverage, slower speeds
- Glenham, SD: more fiber coverage, faster speeds
- Mobridge, SD: more fiber coverage, faster speeds
- Forest City, SD: less fiber coverage, faster speeds
- Trail City, SD: more fiber coverage, faster speeds
- Selby, SD: more fiber coverage, faster speeds
- Sitka, SD: more fiber coverage, faster speeds
Cities with Similar Populations
- Fairbanks, MN: less fiber coverage, faster speeds
- Witherspoon, AR: more fiber coverage, faster speeds
- Fowler, AR: less fiber coverage, faster speeds
- Fossum, MN: more fiber coverage, faster speeds
- Fort Green, FL: more fiber coverage, faster speeds
- Fitzhugh, AR: less fiber coverage, faster speeds
- Fife, TX: less fiber coverage, faster speeds
- Fenwick, CT: less fiber coverage, faster speeds
- Fairdale, AL: less fiber coverage, faster speeds
- Evanston, KY: more fiber coverage, faster speeds