In Grantham there are 9 residential internet providers covering 100.00% of the city. The average home can get speeds up to 4,489 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.
Jump to Availability Maps
9 Internet Service Providers in Grantham
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 Grantham are not shown.
Grantham 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 Grantham
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 Grantham. 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 HUB66. Now you can call companies in Grantham with more confidence that they might be available.
How fast are internet speeds in Grantham?
The map below shows maximum internet speeds by area in Grantham.
Internet Speed Key
The average Grantham home can get up to 4,489 Mbps on their internet plan. For most people, the fastest download speed in the city is 8,000 Mbps, which 42.07% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, less than 1% of homes can only purchase plans up to 1,000 Mbps. See the internet provider details below for info about their speed and coverage in Grantham.
Internet speeds tend to be faster in the northwest parts of Grantham, and slower in the east areas of the city.
What type of internet should I choose in Grantham?
The fastest internet for you may vary based on where in Grantham you live. If speed is your main concern, fiber will be the fastest internet in the city.
- Fiber is the fastest internet type for 95.74% of Grantham homes.
- Cable is fastest for 4.26% 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 Grantham homes.
Internet Market Health in Grantham
Internet Competition Key
The map shows how competitive the Grantham 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 Grantham based on what connections the average home has availabile:
- Average number of internet service providers to a home: 4.9 (healthy)
- Average types of service (fiber, cable, DSL, etc): 3.7 (very healthy)
- Average providers with broadband (25 Mbps+) speeds: 3.5 (unhealthy)
Overall, competition is healthy.
Grantham 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, Grantham homes have between 1 and 4 options. The type(s) of service available are cable, fiber, fixed wireless, and dsl, 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. Grantham internet customers who want faster speeds have between 1 and 5 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, Grantham is doing better than most.
TV & Internet Providers in Depth
Below you'll find which TV and internet providers offer service in Grantham, along with details on where in Grantham and at what speeds.
XFINITY from Comcast Cable in Grantham, NH
XFINITY cable coverage
About 97.62%, or 2,956 people, have XFINITY cable internet available to them in the city. The company covers the entire Grantham area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in most of Grantham.
XFINITY from Comcast cable download speeds
XFINITY is average when comparing download speeds to all other internet providers in Grantham. Versus other cable providers in the area, XFINITY cable is the fastest. There are 2 different maximum speeds throughout Grantham. The fastest plan anyone in Grantham can order from XFINITY goes up to 2,000 Mbps, the slowest package only goes up to 1,200 Mbps, and the city-wide average maximum speed for Grantham customers is up to 1,475 Mbps.
Show all download speeds
- 34.4% up to 2,000.0 Mbps
- 65.6% up to 1,200.0 Mbps
XFINITY from Comcast cable upload speeds
In Grantham download speeds tend to be faster than than upload speeds for XFINITY cable. Compared to other ISPs, XFINITY is below average where upload speeds are concerned, and the fastest compared to other Grantham cable providers. XFINITY 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 Grantham is up to 250 Mbps. Some customers have slower plan choices, which only go up to 35 Mbps. On average, XFINITY customers can get speeds up to 109 Mbps.
Show all upload speeds
- 34.4% up to 250.0 Mbps
- 65.6% up to 35.0 Mbps
Fidium Fiber Fiber in Grantham, NH
Fidium fiber coverage
About 80.38%, or 2,434 people, have Fidium fiber internet available to them in the city. The company covers the east, north, central, south, southeast, southwest, and northeast Grantham area. Fidium is one of the largest internet service providers internet service providers in the US, with internet service available in much of Grantham.
Fidium Fiber fiber download speeds
Fidium is above average when comparing download speeds to all other internet providers in Grantham. Versus other fiber providers in the area, Fidium fiber is the slowest. There are 2 different maximum speeds throughout Grantham. The fastest plan anyone in Grantham can order from Fidium goes up to 2,000 Mbps, the slowest package only goes up to 1,000 Mbps, and the city-wide average maximum speed for Grantham customers is up to 1,993 Mbps.
Show all download speeds
- 99.3% up to 2,000.0 Mbps
- 0.7% up to 1,000.0 Mbps
Fidium Fiber fiber upload speeds
In Grantham download speeds tend to be equal to than upload speeds for Fidium fiber. Compared to other ISPs, Fidium is above average where upload speeds are concerned, and the slowest compared to other Grantham fiber providers. Fidium 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 Grantham is up to 2,000 Mbps. Some customers have slower plan choices, which only go up to 1,000 Mbps. On average, Fidium customers can get speeds up to 1,993 Mbps.
Show all upload speeds
- 99.3% up to 2,000.0 Mbps
- 0.7% up to 1,000.0 Mbps
Fidium Fiber DSL in Grantham, NH
Fidium DSL coverage
About 76.72%, or 2,323 people, have Fidium DSL internet available to them in the city. The company covers the entire Grantham area. Fidium is one of the largest internet service providers internet service providers in the US, with internet service available in much of Grantham.
Fidium Fiber DSL download speeds
Fidium is below average when comparing download speeds to all other internet providers in Grantham. Versus other DSL providers in the area, Fidium DSL is the fastest. There are 3 different maximum speeds throughout Grantham. The fastest plan anyone in Grantham can order from Fidium goes up to 80 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Grantham customers is up to 12 Mbps.
Show all download speeds
- 1.8% up to 80.0 Mbps
- 2.0% up to 60.0 Mbps
- 96.2% up to 10.0 Mbps
Fidium Fiber DSL upload speeds
In Grantham download speeds tend to be faster than than upload speeds for Fidium DSL. Compared to other ISPs, Fidium is below average where upload speeds are concerned, and the fastest compared to other Grantham DSL providers. Fidium 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 Grantham is up to 20 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Fidium customers can get speeds up to 1.5 Mbps.
Show all upload speeds
- 1.8% up to 20.0 Mbps
- 2.0% up to 10.0 Mbps
- 96.2% up to 1.0 Mbps
HUB66 Fiber in Grantham, NH
HUB66 fiber coverage
About 42.07%, or 1,274 people, have HUB66 fiber internet available to them in the city. The company covers the southwest, central, northwest, south, north, southeast, and west Grantham area. HUB66 is a small internet service provider internet service providers in the US, with internet service available in some of Grantham.
HUB66 fiber download speeds
HUB66 is the fastest when comparing download speeds to all other internet providers in Grantham. Versus other fiber providers in the area, HUB66 fiber is the fastest. There are no different maximum speeds throughout Grantham. The fastest plan anyone in Grantham can order from HUB66 goes up to 8,000 Mbps, and all Grantham customers can get this speed.
Show all download speeds
- 100.0% up to 8,000.0 Mbps
HUB66 fiber upload speeds
In Grantham download speeds tend to be equal to than upload speeds for HUB66 fiber. Compared to other ISPs, HUB66 is the fastest where upload speeds are concerned, and the fastest compared to other Grantham fiber providers. HUB66 offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Grantham is up to 8,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 8,000.0 Mbps
T-Mobile Home Internet Fixed Wireless in Grantham, NH
T-Mobile Home Internet fixed wireless coverage
About 94.88%, or 2,873 people, have T-Mobile Home Internet fixed wireless internet available to them in the city. The company covers the entire Grantham area. T-Mobile Home Internet is one of the largest internet service providers internet service providers in the US, with internet service available in most of Grantham.
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 Grantham. Versus other fixed wireless providers in the area, T-Mobile Home Internet fixed wireless is below average. There are 2 different maximum speeds throughout Grantham. The fastest plan anyone in Grantham 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 Grantham customers is up to 58 Mbps.
Show all download speeds
- 44.4% up to 100.0 Mbps
- 55.6% up to 25.0 Mbps
T-Mobile Home Internet fixed wireless upload speeds
In Grantham 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 average compared to other Grantham 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 Grantham 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 11 Mbps.
Show all upload speeds
- 44.4% up to 20.0 Mbps
- 55.6% up to 3.0 Mbps
US Cellular Fixed Wireless in Grantham, NH
US Cellular fixed wireless coverage
About 78.40%, or 2,374 people, have US Cellular fixed wireless internet available to them in the city. The company covers the entire Grantham area. US Cellular is one of the largest internet service providers internet service providers in the US, with internet service available in much of Grantham.
US Cellular fixed wireless download speeds
US Cellular is the slowest when comparing download speeds to all other internet providers in Grantham. Versus other fixed wireless providers in the area, US Cellular fixed wireless is the slowest. There are 2 different maximum speeds throughout Grantham. The fastest plan anyone in Grantham 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 Grantham customers is up to 12 Mbps.
Show all download speeds
- 14.2% up to 25.0 Mbps
- 85.8% up to 10.0 Mbps
US Cellular fixed wireless upload speeds
In Grantham 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 Grantham 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 Grantham 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 1.3 Mbps.
Show all upload speeds
- 14.2% up to 3.0 Mbps
- 85.8% up to 1.0 Mbps
Verizon Fixed Wireless in Grantham, NH
Verizon fixed wireless coverage
About 22.82%, or 691 people, have Verizon fixed wireless internet available to them in the city. The company covers the southwest, south, and northwest Grantham area. Verizon is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of Grantham.
Verizon fixed wireless download speeds
Verizon is below average when comparing download speeds to all other internet providers in Grantham. Versus other fixed wireless providers in the area, Verizon fixed wireless is the fastest. There are no different maximum speeds throughout Grantham. The fastest plan anyone in Grantham can order from Verizon goes up to 300 Mbps, and all Grantham customers can get this speed.
Show all download speeds
- 100.0% up to 300.0 Mbps
Verizon fixed wireless upload speeds
In Grantham 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 the fastest compared to other Grantham fixed wireless providers. Verizon offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Grantham is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
VTel Wireless Fixed Wireless in Grantham, NH
VTel Wireless fixed wireless coverage
About 1.92%, or 58 people, have VTel Wireless fixed wireless internet available to them in the city. The company covers the south Grantham area. VTel Wireless is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Grantham.
VTel Wireless fixed wireless download speeds
VTel Wireless is below average when comparing download speeds to all other internet providers in Grantham. Versus other fixed wireless providers in the area, VTel Wireless fixed wireless is below average. There are no different maximum speeds throughout Grantham. The fastest plan anyone in Grantham can order from VTel Wireless goes up to 25 Mbps, and all Grantham customers can get this speed.
Show all download speeds
- 100.0% up to 25.0 Mbps
VTel Wireless fixed wireless upload speeds
In Grantham download speeds tend to be faster than than upload speeds for VTel Wireless fixed wireless. Compared to other ISPs, VTel Wireless is below average where upload speeds are concerned, and below average compared to other Grantham fixed wireless providers. VTel Wireless offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Grantham is up to 3.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 3.0 Mbps
Grantham Internet by Area
This information is most helpful to those looking for homes or considering moving to Grantham or any of the areas nearby.
How does internet in Grantham compare to the rest of New Hampshire?
Internet speeds in Grantham are much faster versus the average speeds in New Hampshire: 1,970 Mbps in New Hampshire versus 4,489 Mbps in the city. The state has similar internet availability compared to the city. Average internet coverage in New Hampshire is 98.83% versus 100.00% in Grantham.
What zip codes have widespread internet?
Internet coverage varies by zip code and neighborhood. Some examples in or around Grantham 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
- West Springfield, NH: equal internet coverage, faster speeds
- Springfield, NH: equal internet coverage, slower speeds
- Enfield Center, NH: equal internet coverage, faster speeds
- Mascoma, NH: equal internet coverage, faster speeds
- Georges Mills, NH: equal internet coverage, slower speeds
- Croydon Flat, NH: equal internet coverage, slower speeds
- Enfield, NH: less internet coverage, faster speeds
- Meriden, NH: equal internet coverage, slower speeds
- Cornish Flat, NH: equal internet coverage, slower speeds
- Robinson Corner, NH: less internet coverage, slower speeds
Cities with Similar Populations
- Floydada, TX: less internet coverage, slower speeds
- Andale, KS: equal internet coverage, slower speeds
- Sturgis, KY: less internet coverage, slower speeds
- North Lawrence, OH: equal internet coverage, slower speeds
- Nathalie, VA: less internet coverage, slower speeds
- Milton, NH: less internet coverage, slower speeds
- Lyford, TX: less internet coverage, slower speeds
- Lennox, SD: less internet coverage, slower speeds
- Lennon, MI: less internet coverage, slower speeds
- Janesville, CA: less internet coverage, slower speeds