In Northfield there are 3 residential Cable providers covering 100.00% of the city. The average home can get speeds up to 956 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 Cable internet providers in Northfield, CT.
To see availability maps for all providers including fiber, cable, DSL, and more in Northfield, CT please click below.
Northfield, CT Availability Maps
Cable Internet Service Providers in Northfield
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 Northfield are not shown.
Northfield 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 Northfield is cable internet available?
Cable Internet Availability Key
Cable is available in 100.00% of Northfield. Areas in green have cable 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 Northfield above to see who has service at your home.
How fast is cable internet in Northfield?
The map below shows maximum cable internet speeds by area in Northfield.
Cable Internet Speed Key
The average Northfield home can get up to 956 Mbps on their cable internet plan. The fastest cable download speed in the city is 1,200 Mbps, which 5.60% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 92.51% of homes can only purchase plans up to 940 Mbps. See the internet provider details below for info about their speed and coverage in Northfield.
Cable internet speeds tend to be faster in the northeast parts of Northfield, and slower in the north areas of the city.
Is cable the fastest internet I can get in Northfield?
The fastest internet for you may vary based on where in Northfield you live. In general, fiber competes most often with cable in the city.
- Fiber is the fastest internet type for 100.00% of Northfield 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 Northfield homes.
Cable Providers in Depth
Below you'll find which TV and internet providers offer service in Northfield, along with details on where in Northfield and at what speeds.
Optimum Cable in Northfield, CT
Optimum cable coverage
About 92.51%, or 1,619 people, have Optimum cable internet available to them in the city. The company covers the entire Northfield area. Optimum is one of the largest internet service providers internet service providers in the US, with internet service available in most of Northfield.
Optimum cable download speeds
Optimum is below average when comparing download speeds to all other internet providers in Northfield. Versus other cable providers in the area, Optimum cable is the slowest. There are no different maximum speeds throughout Northfield. The fastest plan anyone in Northfield can order from Optimum goes up to 940 Mbps, and all Northfield customers can get this speed.
Show all download speeds
- 100.0% up to 940.0 Mbps
Optimum cable upload speeds
In Northfield 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 Northfield cable providers. Optimum offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Northfield is up to 35 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 35.0 Mbps
Spectrum Cable in Northfield, CT
Spectrum cable coverage
About 7.49%, or 131 people, have Spectrum cable internet available to them in the city. The company covers the northeast Northfield area. Spectrum is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Northfield.
Spectrum cable download speeds
Spectrum is below average when comparing download speeds to all other internet providers in Northfield. Versus other cable providers in the area, Spectrum cable is below average. There are no different maximum speeds throughout Northfield. The fastest plan anyone in Northfield can order from Spectrum goes up to 1,000 Mbps, and all Northfield customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Spectrum cable upload speeds
In Northfield download speeds tend to be faster than than upload speeds for Spectrum cable. Compared to other ISPs, Spectrum is below average where upload speeds are concerned, and one of the fastest compared to other Northfield cable providers. Spectrum offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Northfield 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 Northfield, CT
XFINITY cable coverage
About 5.60%, or 98 people, have XFINITY cable internet available to them in the city. The company covers the northeast Northfield 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 Northfield.
XFINITY from Comcast cable download speeds
XFINITY is below average when comparing download speeds to all other internet providers in Northfield. Versus other cable providers in the area, XFINITY cable is the fastest. There are no different maximum speeds throughout Northfield. The fastest plan anyone in Northfield can order from XFINITY goes up to 1,200 Mbps, and all Northfield customers can get this speed.
Show all download speeds
- 100.0% up to 1,200.0 Mbps
XFINITY from Comcast cable upload speeds
In Northfield 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 Northfield cable providers. XFINITY offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Northfield is up to 35 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 35.0 Mbps
Northfield Cable by Area
This information is most helpful to those looking for homes or considering moving to Northfield or any of the areas nearby.
How does cable internet in Northfield compare to the rest of Connecticut?
Cable internet speeds in Northfield are much faster versus the average speeds in Connecticut: 0.00 Mbps in Connecticut versus 956 Mbps in the city. The state has similar cable availability compared to the city. Average cable coverage in Connecticut is 0.00% versus 100.00% in Northfield.
What zip codes have cable internet?
Cable internet coverage varies by zip code and neighborhood. Some examples in or around Northfield are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does cable 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
- Thomaston, CT: less cable coverage, faster speeds
- East Litchfield, CT: equal cable coverage, faster speeds
- Plymouth, CT: equal cable coverage, faster speeds
- Harwinton, CT: less cable coverage, faster speeds
- Terryville, CT: less cable coverage, faster speeds
- Morris, CT: less cable coverage, slower speeds
- Litchfield, CT: less cable coverage, slower speeds
- Bethlehem, CT: equal cable coverage, faster speeds
- Watertown, CT: less cable coverage, slower speeds
- Bantam, CT: less cable coverage, slower speeds
Cities with Similar Populations
- Whittemore, MI: less cable coverage, faster speeds
- Toulon, IL: less cable coverage, faster speeds
- Perry, KS: less cable coverage, faster speeds
- Oquawka, IL: less cable coverage, faster speeds
- Phelps, TX: less cable coverage, slower speeds
- Pleasant Lake, IN: less cable coverage, faster speeds
- Poland, NY: less cable coverage, faster speeds
- Quilcene, WA: less cable coverage, faster speeds
- Ramer, TN: less cable coverage, faster speeds
- Remus, MI: less cable coverage, faster speeds