In 21668 there is 1 residential Cable provider covering 64.07% of the zip. The average home can get speeds up to 993 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 21668, MD.
To see availability maps for all providers including fiber, cable, DSL, and more in 21668, MD please click below.
Cable Internet Service Provider in 21668
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 21668 are not shown.
21668 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 21668 is cable internet available?
Cable Internet Availability Key
Cable is available in 64.07% of 21668. Areas in green have cable internet service, where areas in yellow or red may not. The most widely available provider is Atlantic Broadband. Call one of the companies with service in 21668 above to see who has service at your home.
How fast is cable internet in 21668?
The map below shows maximum cable internet speeds by area in 21668.
Cable Internet Speed Key
The average 21668 home can get up to 993 Mbps on their cable internet plan. The fastest cable download speed in the zip is 1,000 Mbps, which 63.44% 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 250 Mbps. See the internet provider details below for info about their speed and coverage in 21668.
Cable internet speeds tend to be faster in the southwest parts of 21668, and slower in the southeast areas of the zip.
Is cable the fastest internet I can get in 21668?
The fastest internet for you may vary based on where in 21668 you live. In general, fiber competes most often with cable in the zip.
- Fiber is the fastest internet type for 96.37% of 21668 homes.
- Cable is fastest for 3.52% of the zip.
- 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 21668 homes.
Cable Providers in Depth
Below you'll find which TV and internet providers offer service in 21668, along with details on where in 21668 and at what speeds.
Atlantic Broadband Cable in 21668, MD
Atlantic Broadband cable coverage
About 64.07%, or 1,111 people, have Atlantic Broadband cable internet available to them in the zip. The company covers the southwest, central, west, southeast, north, and northwest 21668 area. Atlantic Broadband is a large internet service provider internet service providers in the US, with internet service available in a majority of 21668.
Atlantic Broadband cable download speeds
Atlantic Broadband is below average when comparing download speeds to all other internet providers in 21668. Versus other cable providers in the area, Atlantic Broadband cable is the fastest. There are 2 different maximum speeds throughout 21668. The fastest plan anyone in 21668 can order from Atlantic Broadband goes up to 1,000 Mbps, the slowest package only goes up to 250 Mbps, and the zip-wide average maximum speed for 21668 customers is up to 993 Mbps.
Show all download speeds
- 99.0% up to 1,000.0 Mbps
- 1.0% up to 250.0 Mbps
Atlantic Broadband cable upload speeds
In 21668 download speeds tend to be faster than than upload speeds for Atlantic Broadband cable. Compared to other ISPs, Atlantic Broadband is below average where upload speeds are concerned, and the fastest compared to other 21668 cable providers. Atlantic Broadband offers 2 different upload speeds across the zip, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in 21668 is up to 50 Mbps. Some customers have slower plan choices, which only go up to 20 Mbps. On average, Atlantic Broadband customers can get speeds up to 50 Mbps.
Show all upload speeds
- 99.0% up to 50.0 Mbps
- 1.0% up to 20.0 Mbps
21668 Cable by Area
This information is most helpful to those looking for homes or considering moving to 21668 or any of the areas nearby.
How does cable internet in 21668 compare to the rest of Maryland?
Cable internet speeds in 21668 are much faster versus the average speeds in Maryland: 0.00 Mbps in Maryland versus 993 Mbps in the zip. The state has similar cable availability compared to the zip. Average cable coverage in Maryland is 0.00% versus 64.07% in 21668.
What zip codes have cable internet?
Cable internet coverage varies by zip code and neighborhood. Some examples in or around 21668 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 zip codes?
Below are zip codes nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Zip Codes
- 21607, MD: less cable coverage, slower speeds
- 21651, MD: more cable coverage, faster speeds
- 21628, MD: more cable coverage, faster speeds
- 21649, MD: more cable coverage, faster speeds
- 21623, MD: less cable coverage, faster speeds
- 21640, MD: less cable coverage, faster speeds
- 19953, DE: more cable coverage, faster speeds
- 19964, DE: more cable coverage, faster speeds
- 19955, DE: more cable coverage, faster speeds
- 21636, MD: more cable coverage, faster speeds
Zip Codes with Similar Populations
- 04342, ME: more cable coverage, faster speeds
- 04352, ME: more cable coverage, faster speeds
- 56036, MN: less cable coverage, faster speeds
- 68527, NE: less cable coverage, faster speeds
- 68466, NE: more cable coverage, slower speeds
- 67740, KS: more cable coverage, faster speeds
- 66451, KS: more cable coverage, faster speeds
- 62001, IL: less cable coverage, faster speeds
- 73095, OK: less cable coverage, slower speeds
- 55735, MN: less cable coverage, slower speeds