In 21545 there are 2 residential Cable providers covering 96.16% of the zip. The average home can get speeds up to 1,282 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 21545, MD.
To see availability maps for all providers including fiber, cable, DSL, and more in 21545, MD please click below.
Cable Internet Service Providers in 21545
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 21545 are not shown.
21545 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 21545 is cable internet available?
Cable Internet Availability Key
Cable is available in 96.16% of 21545. 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 21545 above to see who has service at your home.
How fast is cable internet in 21545?
The map below shows maximum cable internet speeds by area in 21545.
Cable Internet Speed Key
The average 21545 home can get up to 1,282 Mbps on their cable internet plan. The fastest cable download speed in the zip is 2,000 Mbps, which 27.09% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 69.07% of homes can only purchase plans up to 1,000 Mbps. See the internet provider details below for info about their speed and coverage in 21545.
Cable internet speeds tend to be faster in the southwest parts of 21545, and slower in the northeast areas of the zip.
Is cable the fastest internet I can get in 21545?
The fastest internet for you may vary based on where in 21545 you live. In general, fixed wireless competes most often with cable in the zip.
- Fiber is the fastest internet type for less than 1% of 21545 homes.
- Cable is fastest for 96.16% of the zip.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 3.84%.
- Satellite internet may be the only option for less than 1% of 21545 homes.
Cable Providers in Depth
Below you'll find which TV and internet providers offer service in 21545, along with details on where in 21545 and at what speeds.
Atlantic Broadband Cable in 21545, MD
Atlantic Broadband cable coverage
About 94.96%, or 1,658 people, have Atlantic Broadband cable internet available to them in the zip. The company covers the entire 21545 area. Atlantic Broadband is a large internet service provider internet service providers in the US, with internet service available in most of 21545.
Atlantic Broadband cable download speeds
Atlantic Broadband is above average when comparing download speeds to all other internet providers in 21545. Versus other cable providers in the area, Atlantic Broadband cable is the slowest. There are no different maximum speeds throughout 21545. The fastest plan anyone in 21545 can order from Atlantic Broadband goes up to 1,000 Mbps, and all 21545 customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Atlantic Broadband cable upload speeds
In 21545 download speeds tend to be faster than than upload speeds for Atlantic Broadband cable. Compared to other ISPs, Atlantic Broadband is average where upload speeds are concerned, and the slowest compared to other 21545 cable providers. Atlantic Broadband offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 21545 is up to 50 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 50.0 Mbps
XFINITY from Comcast Cable in 21545, MD
XFINITY cable coverage
About 27.09%, or 473 people, have XFINITY cable internet available to them in the zip. The company covers the southwest, central, and south 21545 area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of 21545.
XFINITY from Comcast cable download speeds
XFINITY is the fastest when comparing download speeds to all other internet providers in 21545. Versus other cable providers in the area, XFINITY cable is the fastest. There are no different maximum speeds throughout 21545. The fastest plan anyone in 21545 can order from XFINITY goes up to 2,000 Mbps, and all 21545 customers can get this speed.
Show all download speeds
- 100.0% up to 2,000.0 Mbps
XFINITY from Comcast cable upload speeds
In 21545 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 21545 cable providers. XFINITY offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 21545 is up to 250 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 250.0 Mbps
21545 Cable by Area
This information is most helpful to those looking for homes or considering moving to 21545 or any of the areas nearby.
How does cable internet in 21545 compare to the rest of Maryland?
Cable internet speeds in 21545 are much faster versus the average speeds in Maryland: 0.00 Mbps in Maryland versus 1,282 Mbps in the zip. The state has similar cable availability compared to the zip. Average cable coverage in Maryland is 0.00% versus 96.16% in 21545.
What zip codes have cable internet?
Cable internet coverage varies by zip code and neighborhood. Some examples in or around 21545 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
- 15564, PA: less cable coverage, slower speeds
- 21524, MD: more cable coverage, slower speeds
- 21532, MD: less cable coverage, faster speeds
- 21529, MD: more cable coverage, slower speeds
- 21543, MD: less cable coverage, faster speeds
- 21502, MD: less cable coverage, slower speeds
- 26767, WV: more cable coverage, slower speeds
- 21542, MD: more cable coverage, faster speeds
- 15545, PA: less cable coverage, faster speeds
- 26753, WV: more cable coverage, slower speeds
Zip Codes with Similar Populations
- 95560, CA: less cable coverage, faster speeds
- 07311, NJ: more cable coverage, faster speeds
- 16141, PA: less cable coverage, faster speeds
- 16028, PA: more cable coverage, slower speeds
- 72444, AR: less cable coverage, slower speeds
- 70725, LA: more cable coverage, faster speeds
- 68791, NE: less cable coverage, slower speeds
- 68527, NE: less cable coverage, slower speeds
- 68466, NE: less cable coverage, slower speeds
- 67740, KS: less cable coverage, slower speeds