In Promise City there is 1 residential Fiber provider covering 22.35% of the city. The average home can get speeds up to 1,000 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 City, IA.
To see availability maps for all providers including fiber, cable, DSL, and more in Promise City, IA please click below.
Promise City, IA Availability Maps
Fiber Internet Service Provider in Promise City
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 City are not shown.
Promise City 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 City is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 22.35% of Promise City. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is GRM Networks. Call one of the companies with service in Promise City above to see who has service at your home.
How fast is fiber internet in Promise City?
The map below shows maximum fiber internet speeds by area in Promise City.
Fiber Internet Speed Key
The average Promise City home can get up to 1,000 Mbps on their fiber internet plan. The fastest fiber download speed in the city is 1,000 Mbps, which 22.35% of residents can get.
Is fiber the fastest internet I can get in Promise City?
The fastest internet for you may vary based on where in Promise City you live. In general, fixed wireless competes most often with fiber in the city.
- Fiber is the fastest internet type for 22.35% of Promise City homes.
- Cable is fastest for less than 1% of the city.
- DSL is fastest for 36.47%.
- Fixed wireless is fastest for 41.18%.
- Satellite internet may be the only option for less than 1% of Promise City homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in Promise City, along with details on where in Promise City and at what speeds.
GRM Networks Fiber in Promise City, IA
GRM Networks fiber coverage
About 22.35%, or 76 people, have GRM Networks fiber internet available to them in the city. The company covers the northeast, west, southwest, north, and northwest Promise City area. GRM Networks is a large internet service provider internet service providers in the US, with internet service available in a small portion of Promise City.
GRM Networks fiber download speeds
GRM Networks is the fastest when comparing download speeds to all other internet providers in Promise City. Versus other fiber providers in the area, GRM Networks fiber is the fastest. There are no different maximum speeds throughout Promise City. The fastest plan anyone in Promise City can order from GRM Networks goes up to 1,000 Mbps, and all Promise City customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
GRM Networks fiber upload speeds
In Promise City download speeds tend to be equal to than upload speeds for GRM Networks fiber. Compared to other ISPs, GRM Networks is the fastest where upload speeds are concerned, and the fastest compared to other Promise City fiber providers. GRM Networks offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Promise City 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 City Fiber by Area
This information is most helpful to those looking for homes or considering moving to Promise City or any of the areas nearby.
How does fiber internet in Promise City compare to the rest of Iowa?
Fiber internet speeds in Promise City are much faster versus the average speeds in Iowa: 0.00 Mbps in Iowa versus 1,000 Mbps in the city. The state has similar fiber availability compared to the city. Average fiber coverage in Iowa is 0.00% versus 22.35% in Promise City.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around Promise City 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
- Plano, IA: less fiber coverage, similar speeds
- Seymour, IA: more fiber coverage, similar speeds
- Harvard, IA: more fiber coverage, similar speeds
- Jerome, IA: more fiber coverage, faster speeds
- Corydon, IA: more fiber coverage, similar speeds
- Walnut City, IA: more fiber coverage, similar speeds
- Mystic, IA: more fiber coverage, similar speeds
- Millerton, IA: more fiber coverage, similar speeds
- Sewal, IA: more fiber coverage, similar speeds
- Melrose, IA: more fiber coverage, slower speeds
Cities with Similar Populations
- Wood, NC: more fiber coverage, similar speeds
- Bancroft, SD: more fiber coverage, similar speeds
- Barnes City, IA: less fiber coverage, similar speeds
- Bass, KY: more fiber coverage, faster speeds
- Baton Rouge, SC: less fiber coverage, faster speeds
- Blaine, OH: less fiber coverage, slower speeds
- Bloomery, WV: more fiber coverage, faster speeds
- Winnisquam, NH: more fiber coverage, faster speeds
- Wirth, AR: more fiber coverage, similar speeds
- Womac, IL: more fiber coverage, slower speeds