In DeMarest there are 3 residential Fiber 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.
This page contains all Fiber internet providers in DeMarest, NJ.
To see availability maps for all providers including fiber, cable, DSL, and more in DeMarest, NJ please click below.
DeMarest, NJ Availability Maps
Fiber 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
Where in DeMarest is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 100.00% of DeMarest. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is Optimum. Call one of the companies with service in DeMarest above to see who has service at your home.
How fast is fiber internet in DeMarest?
The map below shows maximum fiber internet speeds by area in DeMarest.
Fiber Internet Speed Key
The average DeMarest home can get up to 8,000 Mbps on their fiber internet plan. The fastest fiber download speed in the city is 8,000 Mbps, which 100.00% of residents can get.
Is fiber the fastest internet I can get in DeMarest?
The fastest internet for you may vary based on where in DeMarest you live. In general, satellite competes most often with fiber 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.
Fiber 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
DeMarest Fiber 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 fiber internet in DeMarest compare to the rest of New Jersey?
Fiber internet speeds in DeMarest are much faster versus the average speeds in New Jersey: 0.00 Mbps in New Jersey versus 8,000 Mbps in the city. The state has similar fiber availability compared to the city. Average fiber coverage in New Jersey is 0.00% versus 100.00% in DeMarest.
What zip codes have fiber internet?
Fiber 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 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
- Cresskill, NJ: less fiber coverage, slower speeds
- Closter, NJ: equal fiber coverage, similar speeds
- Alpine, NJ: less fiber coverage, slower speeds
- Haworth, NJ: equal fiber coverage, similar speeds
- Dumont, NJ: less fiber coverage, similar speeds
- Tenafly, NJ: less fiber coverage, slower speeds
- Harrington Park, NJ: less fiber coverage, slower speeds
- Norwood, NJ: less fiber coverage, slower speeds
- Bergenfield, NJ: less fiber coverage, slower speeds
- New Milford, NJ: equal fiber coverage, similar speeds
Cities with Similar Populations
- Henniker, NH: less fiber coverage, slower speeds
- Guilderland, NY: less fiber coverage, slower speeds
- Gulf Park Estates, MS: less fiber coverage, slower speeds
- Gun Barrel City, TX: less fiber coverage, slower speeds
- Gwinn, MI: less fiber coverage, slower speeds
- Halethorpe, MD: less fiber coverage, slower speeds
- Halifax, VA: less fiber coverage, slower speeds
- Harrogate, TN: less fiber coverage, slower speeds
- Hato Viejo, PR: less fiber coverage, slower speeds
- Hauula, HI: less fiber coverage, slower speeds