In Green Castle there are 10 residential internet providers covering 100.00% of the city. The average home can get speeds up to 977 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.
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10 Internet Service Providers in Green Castle
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 Green Castle are not shown.
Green Castle 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
Availability maps for all providers in Green Castle
Using the dropdown below, please select a provider. Green indicates nearly all homes have service, red indicates few homes have service, and blank indicates no service.
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Internet service is available in 100.00% of Green Castle. Using our interactive availability map, you can compare service areas for different providers, we include fiber, cable, DSL, or fixed wireless internet service for all providers who offer it. You will notice that some providers might be listed multiple times for each service. If you find no providers cover the location you're looking at, you can opt for satellite service. The most widely available provider is Nextlink. Now you can call companies in Green Castle with more confidence that they might be available.
How fast are internet speeds in Green Castle?
The map below shows maximum internet speeds by area in Green Castle.
Internet Speed Key
The average Green Castle home can get up to 977 Mbps on their internet plan. For most people, the fastest download speed in the city is 1,000 Mbps, which 96.67% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 3.33% of homes can only purchase plans up to 300 Mbps. See the internet provider details below for info about their speed and coverage in Green Castle.
Internet speeds tend to be faster in the southwest parts of Green Castle, and slower in the northeast areas of the city.
What type of internet should I choose in Green Castle?
The fastest internet for you may vary based on where in Green Castle you live. If speed is your main concern, fixed wireless will be the fastest internet in the city.
- Fiber is the fastest internet type for less than 1% of Green Castle homes.
- Cable is fastest for less than 1% of the city.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 100.00%.
- Satellite internet may be the only option for less than 1% of Green Castle homes.
Internet Market Health in Green Castle
Internet Competition Key
The map shows how competitive the Green Castle internet service market is. Areas in green have more alternatives, areas in yellow have a few choices, and areas in red may have only one provider. More competition usually means faster speeds and better prices for you, the customer.
Below are quick facts on internet competition and market health in Green Castle based on what connections the average home has availabile:
- Average number of internet service providers to a home: 6.1 (very healthy)
- Average types of service (fiber, cable, DSL, etc): 2.2 (unhealthy)
- Average providers with broadband (25 Mbps+) speeds: 5.7 (very healthy)
Overall, competition is healthy.
Green Castle internet customers have the ability to buy internet service from 4 to 8 different providers, depending on where they live. For different types of service, Green Castle homes have between 1 and 3 options. The type(s) of service available are fixed wireless, dsl, and cable, though these may vary depending on the region within the city.
When it comes to broadband download speeds faster than 25 Mbps, the situation is worse. Green Castle internet customers who want faster speeds have between 3 and 8 choices of companies offering speeds up to or over 25 Mbps.
More internet companies with faster speeds means fewer monopolies and better prices for customers. In promoting a free market for internet, Green Castle is doing better than most.
TV & Internet Providers in Depth
Below you'll find which TV and internet providers offer service in Green Castle, along with details on where in Green Castle and at what speeds.
Centurylink DSL in Green Castle, IA
Centurylink DSL coverage
About 78.00%, or 117 people, have Centurylink DSL internet available to them in the city. The company covers the entire Green Castle area. Centurylink is one of the largest internet service providers internet service providers in the US, with internet service available in much of Green Castle.
Centurylink DSL download speeds
Centurylink is below average when comparing download speeds to all other internet providers in Green Castle. Versus other DSL providers in the area, Centurylink DSL is the fastest. There are 4 different maximum speeds throughout Green Castle. The fastest plan anyone in Green Castle can order from Centurylink goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Green Castle customers is up to 76 Mbps.
Show all download speeds
- 60.7% up to 100.0 Mbps
- 6.8% up to 80.0 Mbps
- 21.4% up to 40.0 Mbps
- 11.1% up to 10.0 Mbps
Centurylink DSL upload speeds
In Green Castle download speeds tend to be faster than than upload speeds for Centurylink DSL. Compared to other ISPs, Centurylink is below average where upload speeds are concerned, and the fastest compared to other Green Castle DSL providers. Centurylink 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 Green Castle is up to 10 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Centurylink customers can get speeds up to 7.5 Mbps.
Show all upload speeds
- 67.5% up to 10.0 Mbps
- 21.4% up to 3.0 Mbps
- 11.1% up to 1.0 Mbps
Mediacom Cable in Green Castle, IA
Mediacom cable coverage
About 38.00%, or 57 people, have Mediacom cable internet available to them in the city. The company covers the northeast and south Green Castle area. Mediacom is one of the largest internet service providers internet service providers in the US, with internet service available in some of Green Castle.
Mediacom cable download speeds
Mediacom is the fastest when comparing download speeds to all other internet providers in Green Castle. Versus other cable providers in the area, Mediacom cable is the fastest. There are no different maximum speeds throughout Green Castle. The fastest plan anyone in Green Castle can order from Mediacom goes up to 1,000 Mbps, and all Green Castle customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Mediacom cable upload speeds
In Green Castle download speeds tend to be faster than than upload speeds for Mediacom cable. Compared to other ISPs, Mediacom is below average where upload speeds are concerned, and the fastest compared to other Green Castle cable providers. Mediacom offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Green Castle is up to 50 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 50.0 Mbps
Nextlink Fixed Wireless in Green Castle, IA
Nextlink fixed wireless coverage
About 100.00%, or 150 people, have Nextlink fixed wireless internet available to them in the city. The company covers the entire Green Castle area. Nextlink is one of the largest internet service providers internet service providers in the US, with internet service available in every corner of Green Castle.
Nextlink fixed wireless download speeds
Nextlink is above average when comparing download speeds to all other internet providers in Green Castle. Versus other fixed wireless providers in the area, Nextlink fixed wireless is the fastest. There are 2 different maximum speeds throughout Green Castle. The fastest plan anyone in Green Castle can order from Nextlink goes up to 1,000 Mbps, the slowest package only goes up to 300 Mbps, and the city-wide average maximum speed for Green Castle customers is up to 977 Mbps.
Show all download speeds
- 96.7% up to 1,000.0 Mbps
- 3.3% up to 300.0 Mbps
Nextlink fixed wireless upload speeds
In Green Castle download speeds tend to be faster than than upload speeds for Nextlink fixed wireless. Compared to other ISPs, Nextlink is the fastest where upload speeds are concerned, and the fastest compared to other Green Castle fixed wireless providers. Nextlink 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 Green Castle is up to 1,000 Mbps. Some customers have slower plan choices, which only go up to 100 Mbps. On average, Nextlink customers can get speeds up to 970 Mbps.
Show all upload speeds
- 96.7% up to 1,000.0 Mbps
- 3.3% up to 100.0 Mbps
T-Mobile Home Internet Fixed Wireless in Green Castle, IA
T-Mobile Home Internet fixed wireless coverage
About 100.00%, or 150 people, have T-Mobile Home Internet fixed wireless internet available to them in the city. The company covers the entire Green Castle area. T-Mobile Home Internet is one of the largest internet service providers internet service providers in the US, with internet service available in every corner of Green Castle.
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 Green Castle. Versus other fixed wireless providers in the area, T-Mobile Home Internet fixed wireless is below average. There are 2 different maximum speeds throughout Green Castle. The fastest plan anyone in Green Castle 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 Green Castle customers is up to 80 Mbps.
Show all download speeds
- 73.3% up to 100.0 Mbps
- 26.7% up to 25.0 Mbps
T-Mobile Home Internet fixed wireless upload speeds
In Green Castle 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 Green Castle 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 Green Castle 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 15 Mbps.
Show all upload speeds
- 73.3% up to 20.0 Mbps
- 26.7% up to 3.0 Mbps
US Cellular Fixed Wireless in Green Castle, IA
US Cellular fixed wireless coverage
About 100.00%, or 150 people, have US Cellular fixed wireless internet available to them in the city. The company covers the entire Green Castle area. US Cellular is one of the largest internet service providers internet service providers in the US, with internet service available in every corner of Green Castle.
US Cellular fixed wireless download speeds
US Cellular is the slowest when comparing download speeds to all other internet providers in Green Castle. Versus other fixed wireless providers in the area, US Cellular fixed wireless is the slowest. There are 2 different maximum speeds throughout Green Castle. The fastest plan anyone in Green Castle can order from US Cellular goes up to 25 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Green Castle customers is up to 20 Mbps.
Show all download speeds
- 67.3% up to 25.0 Mbps
- 32.7% up to 10.0 Mbps
US Cellular fixed wireless upload speeds
In Green Castle download speeds tend to be faster than than upload speeds for US Cellular fixed wireless. Compared to other ISPs, US Cellular is the slowest where upload speeds are concerned, and the slowest compared to other Green Castle fixed wireless providers. US Cellular 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 Green Castle is up to 3.0 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, US Cellular customers can get speeds up to 2.3 Mbps.
Show all upload speeds
- 67.3% up to 3.0 Mbps
- 32.7% up to 1.0 Mbps
EarthLink Fixed Wireless in Green Castle, IA
EarthLink fixed wireless coverage
About 75.33%, or 113 people, have EarthLink fixed wireless internet available to them in the city. The company covers the entire Green Castle area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in much of Green Castle.
EarthLink fixed wireless download speeds
EarthLink is below average when comparing download speeds to all other internet providers in Green Castle. Versus other fixed wireless providers in the area, EarthLink fixed wireless is below average. There are no different maximum speeds throughout Green Castle. The fastest plan anyone in Green Castle can order from EarthLink goes up to 25 Mbps, and all Green Castle customers can get this speed.
Show all download speeds
- 100.0% up to 25.0 Mbps
EarthLink fixed wireless upload speeds
In Green Castle 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 below average compared to other Green Castle fixed wireless providers. EarthLink offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Green Castle 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 Green Castle, IA
AT&T fixed wireless coverage
About 75.33%, or 113 people, have AT&T fixed wireless internet available to them in the city. The company covers the entire Green Castle area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in much of Green Castle.
AT&T fixed wireless download speeds
AT&T is below average when comparing download speeds to all other internet providers in Green Castle. Versus other fixed wireless providers in the area, AT&T fixed wireless is below average. There are no different maximum speeds throughout Green Castle. The fastest plan anyone in Green Castle can order from AT&T goes up to 25 Mbps, and all Green Castle customers can get this speed.
Show all download speeds
- 100.0% up to 25.0 Mbps
AT&T fixed wireless upload speeds
In Green Castle 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 below average compared to other Green Castle fixed wireless providers. AT&T offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Green Castle is up to 3.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 3.0 Mbps
Rise Broadband Fixed Wireless in Green Castle, IA
Rise Broadband fixed wireless coverage
About 44.00%, or 66 people, have Rise Broadband fixed wireless internet available to them in the city. The company covers the southwest and south Green Castle area. Rise Broadband is one of the largest internet service providers internet service providers in the US, with internet service available in some of Green Castle.
Rise Broadband fixed wireless download speeds
Rise Broadband is below average when comparing download speeds to all other internet providers in Green Castle. Versus other fixed wireless providers in the area, Rise Broadband fixed wireless is below average. There are 2 different maximum speeds throughout Green Castle. The fastest plan anyone in Green Castle can order from Rise Broadband goes up to 100 Mbps, the slowest package only goes up to 50 Mbps, and the city-wide average maximum speed for Green Castle customers is up to 61 Mbps.
Show all download speeds
- 22.7% up to 100.0 Mbps
- 77.3% up to 50.0 Mbps
Rise Broadband fixed wireless upload speeds
In Green Castle download speeds tend to be faster than than upload speeds for Rise Broadband fixed wireless. Compared to other ISPs, Rise Broadband is below average where upload speeds are concerned, and below average compared to other Green Castle fixed wireless providers. Rise Broadband 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 Green Castle is up to 20 Mbps. Some customers have slower plan choices, which only go up to 10 Mbps. On average, Rise Broadband customers can get speeds up to 12 Mbps.
Show all upload speeds
- 22.7% up to 20.0 Mbps
- 77.3% up to 10.0 Mbps
Green Castle Internet by Area
This information is most helpful to those looking for homes or considering moving to Green Castle or any of the areas nearby.
How does internet in Green Castle compare to the rest of Iowa?
Internet speeds in Green Castle are slower versus the average speeds in Iowa: 2,759 Mbps in Iowa versus 977 Mbps in the city. The state has similar internet availability compared to the city. Average internet coverage in Iowa is 98.80% versus 100.00% in Green Castle.
What zip codes have widespread internet?
Internet coverage varies by zip code and neighborhood. Some examples in or around Green Castle are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does internet service 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
- Colfax, IA: equal internet coverage, slower speeds
- Valeria, IA: equal internet coverage, slower speeds
- Goddard, IA: equal internet coverage, slower speeds
- Mitchellville, IA: less internet coverage, faster speeds
- Mingo, IA: equal internet coverage, slower speeds
- Santiago, IA: equal internet coverage, slower speeds
- Prairie City, IA: less internet coverage, slower speeds
- Ira, IA: equal internet coverage, slower speeds
- Lambs Grove, IA: equal internet coverage, faster speeds
- Bondurant, IA: equal internet coverage, faster speeds
Cities with Similar Populations
- Denney, KY: equal internet coverage, faster speeds
- Dog Town, PA: equal internet coverage, faster speeds
- Wilbren, OH: equal internet coverage, slower speeds
- Dobbins, KY: equal internet coverage, faster speeds
- Wildwood Gables, NJ: equal internet coverage, faster speeds
- Diefenbach Corners, WI: equal internet coverage, faster speeds
- Dexterville, WI: less internet coverage, faster speeds
- Wiles Crossroads, SC: equal internet coverage, faster speeds
- Dewey, WI: less internet coverage, slower speeds
- Denver, MO: less internet coverage, faster speeds