In South Dennis there is 1 residential Cable provider covering 100.00% of the city. The average home can get speeds up to 1,458 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 Dennis, MA.
To see availability maps for all providers including fiber, cable, DSL, and more in South Dennis, MA please click below.
South Dennis, MA Availability Maps
Cable Internet Service Provider in South Dennis
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 Dennis are not shown.
South Dennis 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 Dennis is cable internet available?
Cable Internet Availability Key
Cable is available in 100.00% of South Dennis. 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 Dennis above to see who has service at your home.
How fast is cable internet in South Dennis?
The map below shows maximum cable internet speeds by area in South Dennis.
Cable Internet Speed Key
The average South Dennis home can get up to 1,458 Mbps on their cable internet plan. The fastest cable download speed in the city is 2,000 Mbps, which 32.21% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 67.79% of homes can only purchase plans up to 1,200 Mbps. See the internet provider details below for info about their speed and coverage in South Dennis.
Cable internet speeds tend to be faster in the northeast parts of South Dennis, and slower in the southwest areas of the city.
Is cable the fastest internet I can get in South Dennis?
The fastest internet for you may vary based on where in South Dennis you live. In general, satellite competes most often with cable in the city.
- Fiber is the fastest internet type for less than 1% of South Dennis homes.
- Cable is fastest for 100.00% 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 Dennis homes.
Cable Providers in Depth
Below you'll find which TV and internet providers offer service in South Dennis, along with details on where in South Dennis and at what speeds.
XFINITY from Comcast Cable in South Dennis, MA
XFINITY cable coverage
About 100.00%, or 4,132 people, have XFINITY cable internet available to them in the city. The company covers the entire South Dennis area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in every corner of South Dennis.
XFINITY from Comcast cable download speeds
XFINITY is the fastest when comparing download speeds to all other internet providers in South Dennis. Versus other cable providers in the area, XFINITY cable is the fastest. There are 2 different maximum speeds throughout South Dennis. The fastest plan anyone in South Dennis 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 Dennis customers is up to 1,458 Mbps.
Show all download speeds
- 32.2% up to 2,000.0 Mbps
- 67.8% up to 1,200.0 Mbps
XFINITY from Comcast cable upload speeds
In South Dennis download speeds tend to be faster than than upload speeds for XFINITY cable. Compared to other ISPs, XFINITY is the fastest where upload speeds are concerned, and the fastest compared to other South Dennis cable providers. XFINITY 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 South Dennis is up to 2,000 Mbps. Some customers have slower plan choices, which only go up to 35 Mbps. On average, XFINITY customers can get speeds up to 294 Mbps.
Show all upload speeds
- 10.8% up to 2,000.0 Mbps
- 21.4% up to 250.0 Mbps
- 67.8% up to 35.0 Mbps
South Dennis Cable by Area
This information is most helpful to those looking for homes or considering moving to South Dennis or any of the areas nearby.
How does cable internet in South Dennis compare to the rest of Massachusetts?
Cable internet speeds in South Dennis are much faster versus the average speeds in Massachusetts: 0.00 Mbps in Massachusetts versus 1,458 Mbps in the city. The state has similar cable availability compared to the city. Average cable coverage in Massachusetts is 0.00% versus 100.00% in South Dennis.
What zip codes have cable internet?
Cable internet coverage varies by zip code and neighborhood. Some examples in or around South Dennis 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
- East Dennis, MA: equal cable coverage, faster speeds
- Dennis, MA: equal cable coverage, faster speeds
- West Dennis, MA: equal cable coverage, faster speeds
- South Yarmouth, MA: equal cable coverage, faster speeds
- Dennis Port, MA: equal cable coverage, faster speeds
- Northwest Harwich, MA: less cable coverage, faster speeds
- Yarmouth Port, MA: less cable coverage, slower speeds
- Harwich, MA: less cable coverage, faster speeds
- Harwich Port, MA: equal cable coverage, faster speeds
- West Yarmouth, MA: less cable coverage, faster speeds
Cities with Similar Populations
- Eufaula, OK: less cable coverage, slower speeds
- Lansford, PA: less cable coverage, faster speeds
- Lake Mathews, CA: less cable coverage, slower speeds
- Juno Beach, FL: less cable coverage, slower speeds
- Mertztown, PA: less cable coverage, faster speeds
- Hesston, KS: less cable coverage, faster speeds
- Greenwood, LA: less cable coverage, faster speeds
- El Lago, TX: equal cable coverage, faster speeds
- Dresden, OH: less cable coverage, slower speeds
- Decatur, MS: less cable coverage, slower speeds