In Portsmouth there are 11 residential internet providers covering 100.00% of the city. The average home can get speeds up to 448 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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11 Internet Service Providers in Portsmouth
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 Portsmouth are not shown.
Portsmouth 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 Portsmouth
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.
Please note some providers will take longer to load than others
Internet service is available in 100.00% of Portsmouth. 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 Portsmouth with more confidence that they might be available.
How fast are internet speeds in Portsmouth?
The map below shows maximum internet speeds by area in Portsmouth.
Internet Speed Key
The average Portsmouth home can get up to 448 Mbps on their internet plan. For most people, the fastest download speed in the city is 1,000 Mbps, which 2.61% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 2.40% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in Portsmouth.
Internet speeds tend to be faster in the north parts of Portsmouth, and slower in the southwest areas of the city.
What type of internet should I choose in Portsmouth?
The fastest internet for you may vary based on where in Portsmouth 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 24.84% of Portsmouth homes.
- Cable is fastest for less than 1% of the city.
- DSL is fastest for 3.49%.
- Fixed wireless is fastest for 71.68%.
- Satellite internet may be the only option for less than 1% of Portsmouth homes.
Internet Market Health in Portsmouth
Internet Competition Key
The map shows how competitive the Portsmouth 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 Portsmouth based on what connections the average home has availabile:
- Average number of internet service providers to a home: 4.5 (unhealthy)
- Average types of service (fiber, cable, DSL, etc): 2.5 (unhealthy)
- Average providers with broadband (25 Mbps+) speeds: 4.0 (unhealthy)
Overall, competition is unhealthy.
Portsmouth internet customers have the ability to buy internet service from 1 to 7 different providers, depending on where they live. For different types of service, Portsmouth homes have between 1 and 3 options. The type(s) of service available are fixed wireless, dsl, and fiber, 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. Portsmouth internet customers who want faster speeds have between 0 and 7 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, Portsmouth needs improvement.
TV & Internet Providers in Depth
Below you'll find which TV and internet providers offer service in Portsmouth, along with details on where in Portsmouth and at what speeds.
Windstream DSL in Portsmouth, IA
Windstream DSL coverage
About 86.71%, or 398 people, have Windstream DSL internet available to them in the city. The company covers the entire Portsmouth area. Windstream is one of the largest internet service providers internet service providers in the US, with internet service available in most of Portsmouth.
Windstream DSL download speeds
Windstream is below average when comparing download speeds to all other internet providers in Portsmouth. Versus other DSL providers in the area, Windstream DSL is the fastest. There are 4 different maximum speeds throughout Portsmouth. The fastest plan anyone in Portsmouth can order from Windstream goes up to 200 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Portsmouth customers is up to 113 Mbps.
Show all download speeds
- 42.0% up to 200.0 Mbps
- 25.9% up to 100.0 Mbps
- 0.3% up to 50.0 Mbps
- 31.9% up to 10.0 Mbps
Windstream DSL upload speeds
In Portsmouth download speeds tend to be faster than than upload speeds for Windstream DSL. Compared to other ISPs, Windstream is below average where upload speeds are concerned, and the fastest compared to other Portsmouth DSL providers. Windstream offers 4 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 Portsmouth is up to 52 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Windstream customers can get speeds up to 30 Mbps.
Show all upload speeds
- 48.5% up to 52.0 Mbps
- 19.3% up to 23.0 Mbps
- 0.3% up to 12.0 Mbps
- 31.9% up to 1.0 Mbps
FMCTC Fiber in Portsmouth, IA
FMCTC fiber coverage
About 59.69%, or 274 people, have FMCTC fiber internet available to them in the city. The company covers the central, north, east, northeast, southeast, and northwest Portsmouth area. FMCTC is a small internet service provider internet service providers in the US, with internet service available in a majority of Portsmouth.
FMCTC fiber download speeds
FMCTC is above average when comparing download speeds to all other internet providers in Portsmouth. Versus other fiber providers in the area, FMCTC fiber is the slowest. There are no different maximum speeds throughout Portsmouth. The fastest plan anyone in Portsmouth can order from FMCTC goes up to 400 Mbps, and all Portsmouth customers can get this speed.
Show all download speeds
- 100.0% up to 400.0 Mbps
FMCTC fiber upload speeds
In Portsmouth download speeds tend to be faster than than upload speeds for FMCTC fiber. Compared to other ISPs, FMCTC is below average where upload speeds are concerned, and the slowest compared to other Portsmouth fiber providers. FMCTC offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Portsmouth is up to 100 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 100.0 Mbps
US Cellular Fixed Wireless in Portsmouth, IA
US Cellular fixed wireless coverage
About 93.25%, or 428 people, have US Cellular fixed wireless internet available to them in the city. The company covers the entire Portsmouth area. US Cellular is one of the largest internet service providers internet service providers in the US, with internet service available in most of Portsmouth.
US Cellular fixed wireless download speeds
US Cellular is the slowest when comparing download speeds to all other internet providers in Portsmouth. Versus other fixed wireless providers in the area, US Cellular fixed wireless is the slowest. There are 2 different maximum speeds throughout Portsmouth. The fastest plan anyone in Portsmouth 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 Portsmouth customers is up to 21 Mbps.
Show all download speeds
- 72.4% up to 25.0 Mbps
- 27.6% up to 10.0 Mbps
US Cellular fixed wireless upload speeds
In Portsmouth 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 Portsmouth 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 Portsmouth 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 2.4 Mbps.
Show all upload speeds
- 72.4% up to 3.0 Mbps
- 27.6% up to 1.0 Mbps
Verizon Fixed Wireless in Portsmouth, IA
Verizon fixed wireless coverage
About 81.70%, or 375 people, have Verizon fixed wireless internet available to them in the city. The company covers the entire Portsmouth area. Verizon is one of the largest internet service providers internet service providers in the US, with internet service available in much of Portsmouth.
Verizon fixed wireless download speeds
Verizon is above average when comparing download speeds to all other internet providers in Portsmouth. Versus other fixed wireless providers in the area, Verizon fixed wireless is above average. There are no different maximum speeds throughout Portsmouth. The fastest plan anyone in Portsmouth can order from Verizon goes up to 300 Mbps, and all Portsmouth customers can get this speed.
Show all download speeds
- 100.0% up to 300.0 Mbps
Verizon fixed wireless upload speeds
In Portsmouth download speeds tend to be faster than than upload speeds for Verizon fixed wireless. Compared to other ISPs, Verizon is below average where upload speeds are concerned, and below average compared to other Portsmouth fixed wireless providers. Verizon offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Portsmouth is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
Nextlink Fixed Wireless in Portsmouth, IA
Nextlink fixed wireless coverage
About 73.86%, or 339 people, have Nextlink fixed wireless internet available to them in the city. The company covers the entire Portsmouth area. Nextlink is one of the largest internet service providers internet service providers in the US, with internet service available in much of Portsmouth.
Nextlink fixed wireless download speeds
Nextlink is above average when comparing download speeds to all other internet providers in Portsmouth. Versus other fixed wireless providers in the area, Nextlink fixed wireless is the fastest. There are 5 different maximum speeds throughout Portsmouth. The fastest plan anyone in Portsmouth can order from Nextlink goes up to 1,000 Mbps, the slowest package only goes up to 100 Mbps, and the city-wide average maximum speed for Portsmouth customers is up to 467 Mbps.
Show all download speeds
- 2.7% up to 1,000.0 Mbps
- 82.9% up to 500.0 Mbps
- 3.2% up to 400.0 Mbps
- 0.9% up to 300.0 Mbps
- 10.3% up to 100.0 Mbps
Nextlink fixed wireless upload speeds
In Portsmouth download speeds tend to be faster than than upload speeds for Nextlink fixed wireless. Compared to other ISPs, Nextlink is below average where upload speeds are concerned, and the fastest compared to other Portsmouth fixed wireless providers. Nextlink offers 4 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 Portsmouth is up to 1,000 Mbps. Some customers have slower plan choices, which only go up to 20 Mbps. On average, Nextlink customers can get speeds up to 115 Mbps.
Show all upload speeds
- 2.7% up to 1,000.0 Mbps
- 86.1% up to 100.0 Mbps
- 0.9% up to 75.0 Mbps
- 10.3% up to 20.0 Mbps
Windstream Fixed Wireless in Portsmouth, IA
Windstream fixed wireless coverage
About 24.62%, or 113 people, have Windstream fixed wireless internet available to them in the city. The company covers the northwest, north, southeast, and southwest Portsmouth area. Windstream is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of Portsmouth.
Windstream fixed wireless download speeds
Windstream is below average when comparing download speeds to all other internet providers in Portsmouth. Versus other fixed wireless providers in the area, Windstream fixed wireless is below average. There are 4 different maximum speeds throughout Portsmouth. The fastest plan anyone in Portsmouth can order from Windstream goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the city-wide average maximum speed for Portsmouth customers is up to 65 Mbps.
Show all download speeds
- 30.1% up to 100.0 Mbps
- 21.2% up to 75.0 Mbps
- 26.5% up to 50.0 Mbps
- 22.1% up to 25.0 Mbps
Windstream fixed wireless upload speeds
In Portsmouth download speeds tend to be faster than than upload speeds for Windstream fixed wireless. Compared to other ISPs, Windstream is below average where upload speeds are concerned, and below average compared to other Portsmouth fixed wireless providers. Windstream 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 Portsmouth is up to 10 Mbps. Some customers have slower plan choices, which only go up to 4.0 Mbps. On average, Windstream customers can get speeds up to 7.3 Mbps.
Show all upload speeds
- 51.3% up to 10.0 Mbps
- 26.5% up to 5.0 Mbps
- 22.1% up to 4.0 Mbps
T-Mobile Home Internet Fixed Wireless in Portsmouth, IA
T-Mobile Home Internet fixed wireless coverage
About 15.03%, or 69 people, have T-Mobile Home Internet fixed wireless internet available to them in the city. The company covers the northwest, northeast, southeast, southwest, and east Portsmouth 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 small portion of Portsmouth.
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 Portsmouth. Versus other fixed wireless providers in the area, T-Mobile Home Internet fixed wireless is below average. There are 2 different maximum speeds throughout Portsmouth. The fastest plan anyone in Portsmouth 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 Portsmouth customers is up to 28 Mbps.
Show all download speeds
- 4.3% up to 100.0 Mbps
- 95.7% up to 25.0 Mbps
T-Mobile Home Internet fixed wireless upload speeds
In Portsmouth 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 Portsmouth 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 Portsmouth 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 3.7 Mbps.
Show all upload speeds
- 4.3% up to 20.0 Mbps
- 95.7% up to 3.0 Mbps
Western Iowa Wireless Fixed Wireless in Portsmouth, IA
Western Iowa Wireless fixed wireless coverage
About 9.37%, or 43 people, have Western Iowa Wireless fixed wireless internet available to them in the city. The company covers the northwest, east, north, south, and southeast Portsmouth area. Western Iowa Wireless is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Portsmouth.
Western Iowa Wireless fixed wireless download speeds
Western Iowa Wireless is above average when comparing download speeds to all other internet providers in Portsmouth. Versus other fixed wireless providers in the area, Western Iowa Wireless fixed wireless is above average. There are no different maximum speeds throughout Portsmouth. The fastest plan anyone in Portsmouth can order from Western Iowa Wireless goes up to 300 Mbps, and all Portsmouth customers can get this speed.
Show all download speeds
- 100.0% up to 300.0 Mbps
Western Iowa Wireless fixed wireless upload speeds
In Portsmouth download speeds tend to be faster than than upload speeds for Western Iowa Wireless fixed wireless. Compared to other ISPs, Western Iowa Wireless is below average where upload speeds are concerned, and above average compared to other Portsmouth fixed wireless providers. Western Iowa Wireless offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Portsmouth is up to 100 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 100.0 Mbps
EarthLink Fixed Wireless in Portsmouth, IA
EarthLink fixed wireless coverage
About 2.83%, or 13 people, have EarthLink fixed wireless internet available to them in the city. The company covers the northeast and southeast Portsmouth 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 Portsmouth.
EarthLink fixed wireless download speeds
EarthLink is below average when comparing download speeds to all other internet providers in Portsmouth. Versus other fixed wireless providers in the area, EarthLink fixed wireless is below average. There are no different maximum speeds throughout Portsmouth. The fastest plan anyone in Portsmouth can order from EarthLink goes up to 25 Mbps, and all Portsmouth customers can get this speed.
Show all download speeds
- 100.0% up to 25.0 Mbps
EarthLink fixed wireless upload speeds
In Portsmouth 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 Portsmouth fixed wireless providers. EarthLink offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Portsmouth 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 Portsmouth, IA
AT&T fixed wireless coverage
About 2.83%, or 13 people, have AT&T fixed wireless internet available to them in the city. The company covers the northeast and southeast Portsmouth 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 Portsmouth.
AT&T fixed wireless download speeds
AT&T is below average when comparing download speeds to all other internet providers in Portsmouth. Versus other fixed wireless providers in the area, AT&T fixed wireless is below average. There are no different maximum speeds throughout Portsmouth. The fastest plan anyone in Portsmouth can order from AT&T goes up to 25 Mbps, and all Portsmouth customers can get this speed.
Show all download speeds
- 100.0% up to 25.0 Mbps
AT&T fixed wireless upload speeds
In Portsmouth 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 Portsmouth fixed wireless providers. AT&T offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Portsmouth is up to 3.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 3.0 Mbps
Portsmouth Internet by Area
This information is most helpful to those looking for homes or considering moving to Portsmouth or any of the areas nearby.
How does internet in Portsmouth compare to the rest of Iowa?
Internet speeds in Portsmouth are much slower versus the average speeds in Iowa: 2,759 Mbps in Iowa versus 448 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 Portsmouth.
What zip codes have widespread internet?
Internet coverage varies by zip code and neighborhood. Some examples in or around Portsmouth 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
- Panama, IA: less internet coverage, slower speeds
- Persia, IA: less internet coverage, faster speeds
- Tennant, IA: less internet coverage, faster speeds
- Westphalia, IA: equal internet coverage, slower speeds
- Shelby, IA: equal internet coverage, faster speeds
- Woodbine, IA: less internet coverage, faster speeds
- Earling, IA: less internet coverage, slower speeds
- Harlan, IA: equal internet coverage, faster speeds
- Logan, IA: less internet coverage, faster speeds
- Minden, IA: less internet coverage, faster speeds
Cities with Similar Populations
- Brookvale, CO: less internet coverage, faster speeds
- Wheelerville, MO: less internet coverage, faster speeds
- Whalan, MN: less internet coverage, faster speeds
- Westwood, IN: equal internet coverage, faster speeds
- Westport Point, MA: less internet coverage, faster speeds
- West Fort Ann, NY: equal internet coverage, faster speeds
- West Bend, NC: equal internet coverage, faster speeds
- Wauconda, WA: less internet coverage, slower speeds
- Buckeye, LA: equal internet coverage, faster speeds
- Bryant, WI: less internet coverage, faster speeds