In South Plainfield there are 2 residential Cable providers covering 100.00% of the city. The average home can get speeds up to 1,660 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 South Plainfield, NJ.
To see availability maps for all providers including fiber, cable, DSL, and more in South Plainfield, NJ please click below.
South Plainfield, NJ Availability Maps
Cable Internet Service Providers in South Plainfield
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 South Plainfield are not shown.
South Plainfield 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 South Plainfield is cable internet available?
Cable Internet Availability Key
Cable is available in 100.00% of South Plainfield. Areas in green have cable internet service, where areas in yellow or red may not. The most widely available provider is XFINITY. Call one of the companies with service in South Plainfield above to see who has service at your home.
How fast is cable internet in South Plainfield?
The map below shows maximum cable internet speeds by area in South Plainfield.
Cable Internet Speed Key
The average South Plainfield home can get up to 1,660 Mbps on their cable internet plan. The fastest cable download speed in the city is 2,000 Mbps, which 57.49% 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 940 Mbps. See the internet provider details below for info about their speed and coverage in South Plainfield.
Cable internet speeds tend to be faster in the central parts of South Plainfield, and slower in the north areas of the city.
Is cable the fastest internet I can get in South Plainfield?
The fastest internet for you may vary based on where in South Plainfield you live. In general, fiber competes most often with cable in the city.
- Fiber is the fastest internet type for 50.88% of South Plainfield homes.
- Cable is fastest for 49.12% 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 South Plainfield homes.
Cable Providers in Depth
Below you'll find which TV and internet providers offer service in South Plainfield, along with details on where in South Plainfield and at what speeds.
XFINITY from Comcast Cable in South Plainfield, NJ
XFINITY cable coverage
About 99.85%, or 24,480 people, have XFINITY cable internet available to them in the city. The company covers the entire South Plainfield area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in most of South Plainfield.
XFINITY from Comcast cable download speeds
XFINITY is above average when comparing download speeds to all other internet providers in South Plainfield. Versus other cable providers in the area, XFINITY cable is the fastest. There are 2 different maximum speeds throughout South Plainfield. The fastest plan anyone in South Plainfield 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 South Plainfield customers is up to 1,661 Mbps.
Show all download speeds
- 57.6% up to 2,000.0 Mbps
- 42.4% up to 1,200.0 Mbps
XFINITY from Comcast cable upload speeds
In South Plainfield 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 South Plainfield 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 South Plainfield 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 159 Mbps.
Show all upload speeds
- 57.6% up to 250.0 Mbps
- 42.4% up to 35.0 Mbps
Optimum Cable in South Plainfield, NJ
Optimum cable coverage
About 28.76%, or 7,051 people, have Optimum cable internet available to them in the city. The company covers the entire South Plainfield area. Optimum is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of South Plainfield.
Optimum cable download speeds
Optimum is below average when comparing download speeds to all other internet providers in South Plainfield. Versus other cable providers in the area, Optimum cable is the slowest. There are no different maximum speeds throughout South Plainfield. The fastest plan anyone in South Plainfield can order from Optimum goes up to 940 Mbps, and all South Plainfield customers can get this speed.
Show all download speeds
- 100.0% up to 940.0 Mbps
Optimum cable upload speeds
In South Plainfield 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 the slowest compared to other South Plainfield cable providers. Optimum offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in South Plainfield is up to 35 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 35.0 Mbps
South Plainfield Cable by Area
This information is most helpful to those looking for homes or considering moving to South Plainfield or any of the areas nearby.
How does cable internet in South Plainfield compare to the rest of New Jersey?
Cable internet speeds in South Plainfield are much faster versus the average speeds in New Jersey: 0.00 Mbps in New Jersey versus 1,660 Mbps in the city. The state has similar cable availability compared to the city. Average cable coverage in New Jersey is 0.00% versus 100.00% in South Plainfield.
What zip codes have cable internet?
Cable internet coverage varies by zip code and neighborhood. Some examples in or around South Plainfield 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
- Plainfield, NJ: less cable coverage, faster speeds
- Piscataway, NJ: less cable coverage, slower speeds
- North Plainfield, NJ: equal cable coverage, faster speeds
- Edison, NJ: less cable coverage, slower speeds
- Dunellen, NJ: less cable coverage, slower speeds
- Metuchen, NJ: less cable coverage, slower speeds
- Watchung, NJ: less cable coverage, slower speeds
- Middlesex, NJ: less cable coverage, slower speeds
- Scotch Plains, NJ: less cable coverage, faster speeds
- Fanwood, NJ: equal cable coverage, faster speeds
Cities with Similar Populations
- Springfield, TN: less cable coverage, faster speeds
- Festus, MO: less cable coverage, slower speeds
- Fish Hawk, FL: less cable coverage, slower speeds
- Sheridan, WY: less cable coverage, slower speeds
- Shippensburg, PA: less cable coverage, slower speeds
- Silver Bell, AZ: less cable coverage, slower speeds
- Smyrna, DE: less cable coverage, slower speeds
- Solon, OH: less cable coverage, slower speeds
- South Elgin, IL: less cable coverage, faster speeds
- Farragut, TN: less cable coverage, slower speeds