In DeMarest there are 8 residential internet providers covering 100.00% of the city. The average home can get speeds up to 8,000 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.
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8 Internet Service Providers in DeMarest
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 DeMarest are not shown.
DeMarest 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 DeMarest
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 DeMarest. 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 Optimum. Now you can call companies in DeMarest with more confidence that they might be available.
How fast are internet speeds in DeMarest?
The map below shows maximum internet speeds by area in DeMarest.
Internet Speed Key
The average DeMarest home can get up to 8,000 Mbps on their internet plan. For most people, the fastest download speed in the city is 8,000 Mbps, which 100.00% of residents can get.
What type of internet should I choose in DeMarest?
The fastest internet for you may vary based on where in DeMarest you live. If speed is your main concern, fiber will be the fastest internet in the city.
- Fiber is the fastest internet type for 100.00% of DeMarest 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 less than 1% of DeMarest homes.
Internet Market Health in DeMarest
Internet Competition Key
The map shows how competitive the DeMarest 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 DeMarest based on what connections the average home has availabile:
- Average number of internet service providers to a home: 7.3 (very healthy)
- Average types of service (fiber, cable, DSL, etc): 3.0 (very healthy)
- Average providers with broadband (25 Mbps+) speeds: 7.3 (very healthy)
Overall, competition is very healthy.
DeMarest internet customers have the ability to buy internet service from 5 to 8 different providers, depending on where they live. For different types of service, DeMarest homes have 3 options. The type(s) of service available are fixed wireless, fiber, 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 similar. DeMarest internet customers who want faster speeds have between 5 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, DeMarest is doing quite well.
TV & Internet Providers in Depth
Below you'll find which TV and internet providers offer service in DeMarest, along with details on where in DeMarest and at what speeds.
Optimum Fiber in DeMarest, NJ
Optimum fiber coverage
About 100.00%, or 5,208 people, have Optimum fiber internet available to them in the city. The company covers the entire DeMarest area. Optimum is one of the largest internet service providers internet service providers in the US, with internet service available in every corner of DeMarest.
Optimum fiber download speeds
Optimum is the fastest when comparing download speeds to all other internet providers in DeMarest. Versus other fiber providers in the area, Optimum fiber is the fastest. There are no different maximum speeds throughout DeMarest. The fastest plan anyone in DeMarest can order from Optimum goes up to 8,000 Mbps, and all DeMarest customers can get this speed.
Show all download speeds
- 100.0% up to 8,000.0 Mbps
Optimum fiber upload speeds
In DeMarest download speeds tend to be equal to than upload speeds for Optimum fiber. Compared to other ISPs, Optimum is the fastest where upload speeds are concerned, and the fastest compared to other DeMarest fiber providers. Optimum offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in DeMarest is up to 8,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 8,000.0 Mbps
EarthLink Fiber in DeMarest, NJ
EarthLink fiber coverage
About 100.00%, or 5,208 people, have EarthLink fiber internet available to them in the city. The company covers the entire DeMarest area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in every corner of DeMarest.
EarthLink fiber download speeds
EarthLink is above average when comparing download speeds to all other internet providers in DeMarest. Versus other fiber providers in the area, EarthLink fiber is one of the slowest. There are 2 different maximum speeds throughout DeMarest. The fastest plan anyone in DeMarest can order from EarthLink goes up to 2,048 Mbps, the slowest package only goes up to 940 Mbps, and the city-wide average maximum speed for DeMarest customers is up to 1,874 Mbps.
Show all download speeds
- 84.3% up to 2,048.0 Mbps
- 15.7% up to 940.0 Mbps
EarthLink fiber upload speeds
In DeMarest download speeds tend to be faster than than upload speeds for EarthLink fiber. Compared to other ISPs, EarthLink is above average where upload speeds are concerned, and one of the slowest compared to other DeMarest fiber providers. EarthLink 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 DeMarest is up to 2,048 Mbps. Some customers have slower plan choices, which only go up to 880 Mbps. On average, EarthLink customers can get speeds up to 1,864 Mbps.
Show all upload speeds
- 84.3% up to 2,048.0 Mbps
- 15.7% up to 880.0 Mbps
Verizon Fiber in DeMarest, NJ
Verizon fiber coverage
About 100.00%, or 5,208 people, have Verizon fiber internet available to them in the city. The company covers the entire DeMarest area. Verizon is one of the largest internet service providers internet service providers in the US, with internet service available in every corner of DeMarest.
Verizon fiber download speeds
Verizon is above average when comparing download speeds to all other internet providers in DeMarest. Versus other fiber providers in the area, Verizon fiber is one of the slowest. There are 2 different maximum speeds throughout DeMarest. The fastest plan anyone in DeMarest can order from Verizon goes up to 2,048 Mbps, the slowest package only goes up to 940 Mbps, and the city-wide average maximum speed for DeMarest customers is up to 1,874 Mbps.
Show all download speeds
- 84.3% up to 2,048.0 Mbps
- 15.7% up to 940.0 Mbps
Verizon fiber upload speeds
In DeMarest download speeds tend to be faster than than upload speeds for Verizon fiber. Compared to other ISPs, Verizon is above average where upload speeds are concerned, and one of the slowest compared to other DeMarest fiber providers. Verizon 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 DeMarest is up to 2,048 Mbps. Some customers have slower plan choices, which only go up to 880 Mbps. On average, Verizon customers can get speeds up to 1,864 Mbps.
Show all upload speeds
- 84.3% up to 2,048.0 Mbps
- 15.7% up to 880.0 Mbps
Optimum Cable in DeMarest, NJ
Optimum cable coverage
About 100.00%, or 5,208 people, have Optimum cable internet available to them in the city. The company covers the entire DeMarest area. Optimum is one of the largest internet service providers internet service providers in the US, with internet service available in every corner of DeMarest.
Optimum cable download speeds
Optimum is below average when comparing download speeds to all other internet providers in DeMarest. Versus other cable providers in the area, Optimum cable is the slowest. There are no different maximum speeds throughout DeMarest. The fastest plan anyone in DeMarest can order from Optimum goes up to 940 Mbps, and all DeMarest customers can get this speed.
Show all download speeds
- 100.0% up to 940.0 Mbps
Optimum cable upload speeds
In DeMarest download speeds tend to be faster than than upload speeds for Optimum cable. Compared to other ISPs, Optimum is below average where upload speeds are concerned, and one of the fastest compared to other DeMarest cable providers. Optimum offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in DeMarest is up to 35 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 35.0 Mbps
XFINITY from Comcast Cable in DeMarest, NJ
XFINITY cable coverage
About 3.21%, or 167 people, have XFINITY cable internet available to them in the city. The company covers the south DeMarest area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of DeMarest.
XFINITY from Comcast cable download speeds
XFINITY is below average when comparing download speeds to all other internet providers in DeMarest. Versus other cable providers in the area, XFINITY cable is the fastest. There are no different maximum speeds throughout DeMarest. The fastest plan anyone in DeMarest can order from XFINITY goes up to 1,200 Mbps, and all DeMarest customers can get this speed.
Show all download speeds
- 100.0% up to 1,200.0 Mbps
XFINITY from Comcast cable upload speeds
In DeMarest 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 one of the fastest compared to other DeMarest cable providers. XFINITY offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in DeMarest is up to 35 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 35.0 Mbps
T-Mobile Home Internet Fixed Wireless in DeMarest, NJ
T-Mobile Home Internet fixed wireless coverage
About 100.00%, or 5,208 people, have T-Mobile Home Internet fixed wireless internet available to them in the city. The company covers the entire DeMarest 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 DeMarest.
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 DeMarest. Versus other fixed wireless providers in the area, T-Mobile Home Internet fixed wireless is below average. There are 2 different maximum speeds throughout DeMarest. The fastest plan anyone in DeMarest 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 DeMarest customers is up to 75 Mbps.
Show all download speeds
- 67.0% up to 100.0 Mbps
- 33.0% up to 25.0 Mbps
T-Mobile Home Internet fixed wireless upload speeds
In DeMarest 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 above average compared to other DeMarest 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 DeMarest 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 14 Mbps.
Show all upload speeds
- 67.0% up to 20.0 Mbps
- 33.0% up to 3.0 Mbps
EarthLink Fixed Wireless in DeMarest, NJ
EarthLink fixed wireless coverage
About 99.12%, or 5,162 people, have EarthLink fixed wireless internet available to them in the city. The company covers the entire DeMarest area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in most of DeMarest.
EarthLink fixed wireless download speeds
EarthLink is one of the slowest when comparing download speeds to all other internet providers in DeMarest. Versus other fixed wireless providers in the area, EarthLink fixed wireless is one of the slowest. There are 2 different maximum speeds throughout DeMarest. The fastest plan anyone in DeMarest can order from EarthLink goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the city-wide average maximum speed for DeMarest customers is up to 32 Mbps.
Show all download speeds
- 9.6% up to 100.0 Mbps
- 90.4% up to 25.0 Mbps
EarthLink fixed wireless upload speeds
In DeMarest download speeds tend to be faster than than upload speeds for EarthLink fixed wireless. Compared to other ISPs, EarthLink is one of the slowest where upload speeds are concerned, and one of the slowest compared to other DeMarest fixed wireless providers. EarthLink 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 DeMarest is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, EarthLink customers can get speeds up to 4.6 Mbps.
Show all upload speeds
- 9.6% up to 20.0 Mbps
- 90.4% up to 3.0 Mbps
AT&T Fixed Wireless in DeMarest, NJ
AT&T fixed wireless coverage
About 99.12%, or 5,162 people, have AT&T fixed wireless internet available to them in the city. The company covers the entire DeMarest area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in most of DeMarest.
AT&T fixed wireless download speeds
AT&T is one of the slowest when comparing download speeds to all other internet providers in DeMarest. Versus other fixed wireless providers in the area, AT&T fixed wireless is one of the slowest. There are 2 different maximum speeds throughout DeMarest. The fastest plan anyone in DeMarest can order from AT&T goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the city-wide average maximum speed for DeMarest customers is up to 32 Mbps.
Show all download speeds
- 9.6% up to 100.0 Mbps
- 90.4% up to 25.0 Mbps
AT&T fixed wireless upload speeds
In DeMarest download speeds tend to be faster than than upload speeds for AT&T fixed wireless. Compared to other ISPs, AT&T is one of the slowest where upload speeds are concerned, and one of the slowest compared to other DeMarest fixed wireless providers. AT&T 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 DeMarest is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, AT&T customers can get speeds up to 4.6 Mbps.
Show all upload speeds
- 9.6% up to 20.0 Mbps
- 90.4% up to 3.0 Mbps
Verizon Fixed Wireless in DeMarest, NJ
Verizon fixed wireless coverage
About 24.35%, or 1,268 people, have Verizon fixed wireless internet available to them in the city. The company covers the southeast, south, west, central, north, and northeast DeMarest 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 DeMarest.
Verizon fixed wireless download speeds
Verizon is below average when comparing download speeds to all other internet providers in DeMarest. Versus other fixed wireless providers in the area, Verizon fixed wireless is the fastest. There are no different maximum speeds throughout DeMarest. The fastest plan anyone in DeMarest can order from Verizon goes up to 300 Mbps, and all DeMarest customers can get this speed.
Show all download speeds
- 100.0% up to 300.0 Mbps
Verizon fixed wireless upload speeds
In DeMarest 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 DeMarest fixed wireless providers. Verizon offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in DeMarest is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
DeMarest Internet by Area
This information is most helpful to those looking for homes or considering moving to DeMarest or any of the areas nearby.
How does internet in DeMarest compare to the rest of New Jersey?
Internet speeds in DeMarest are much faster versus the average speeds in New Jersey: 4,388 Mbps in New Jersey versus 8,000 Mbps in the city. The state has similar internet availability compared to the city. Average internet coverage in New Jersey is 99.05% versus 100.00% in DeMarest.
What zip codes have widespread internet?
Internet coverage varies by zip code and neighborhood. Some examples in or around DeMarest 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
- Cresskill, NJ: less internet coverage, slower speeds
- Closter, NJ: equal internet coverage, similar speeds
- Alpine, NJ: equal internet coverage, slower speeds
- Haworth, NJ: equal internet coverage, similar speeds
- Dumont, NJ: equal internet coverage, slower speeds
- Tenafly, NJ: less internet coverage, slower speeds
- Harrington Park, NJ: equal internet coverage, slower speeds
- Norwood, NJ: equal internet coverage, slower speeds
- Bergenfield, NJ: less internet coverage, slower speeds
- New Milford, NJ: equal internet coverage, similar speeds
Cities with Similar Populations
- Henniker, NH: less internet coverage, slower speeds
- Guilderland, NY: equal internet coverage, slower speeds
- Gulf Park Estates, MS: less internet coverage, slower speeds
- Gun Barrel City, TX: less internet coverage, slower speeds
- Gwinn, MI: less internet coverage, slower speeds
- Halethorpe, MD: equal internet coverage, slower speeds
- Halifax, VA: less internet coverage, slower speeds
- Harrogate, TN: less internet coverage, slower speeds
- Hato Viejo, PR: less internet coverage, slower speeds
- Hauula, HI: equal internet coverage, slower speeds