In 21520 there are 12 residential internet providers covering 99.45% of the zip. The average home can get speeds up to 3,400 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.
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12 Internet Service Providers in 21520
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 21520 are not shown.
21520 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
Availability maps for all providers in 21520
Using the dropdown below, please select a provider. Green indicates nearly all homes have service, red indicates few homes have service, and blank indicates no service.
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Internet service is available in 99.45% of 21520. Using our interactive availability map, you can compare service areas for different providers, we include fiber, cable, DSL, or fixed wireless internet service for all providers who offer it. You will notice that some providers might be listed multiple times for each service. If you find no providers cover the location you're looking at, you can opt for satellite service. The most widely available provider is QCOL. Now you can call companies in 21520 with more confidence that they might be available.
How fast are internet speeds in 21520?
The map below shows maximum internet speeds by area in 21520.
Internet Speed Key
The average 21520 home can get up to 3,400 Mbps on their internet plan. For most people, the fastest download speed in the zip is 10,000 Mbps, which 25.36% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 3.15% of homes can only purchase plans up to 25 Mbps. See the internet provider details below for info about their speed and coverage in 21520.
Internet speeds tend to be faster in the northeast parts of 21520, and slower in the southeast areas of the zip.
What type of internet should I choose in 21520?
The fastest internet for you may vary based on where in 21520 you live. If speed is your main concern, cable will be the fastest internet in the zip.
- Fiber is the fastest internet type for 25.36% of 21520 homes.
- Cable is fastest for 70.29% of the zip.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 3.79%.
- Satellite internet may be the only option for less than 1% of 21520 homes.
Internet Market Health in 21520
Internet Competition Key
The map shows how competitive the 21520 internet service market is. Areas in green have more alternatives, areas in yellow have a few choices, and areas in red may have only one provider. More competition usually means faster speeds and better prices for you, the customer.
Below are quick facts on internet competition and market health in 21520 based on what connections the average home has availabile:
- Average number of internet service providers to a home: 4.6 (unhealthy)
- Average types of service (fiber, cable, DSL, etc): 2.1 (unhealthy)
- Average providers with broadband (25 Mbps+) speeds: 4.3 (unhealthy)
Overall, competition is unhealthy.
21520 internet customers have the ability to buy internet service from 1 to 8 different providers, depending on where they live. For different types of service, 21520 homes have between 1 and 3 options. The type(s) of service available are fixed wireless, cable, and fiber, though these may vary depending on the region within the zip.
When it comes to broadband download speeds faster than 25 Mbps, the situation is worse. 21520 internet customers who want faster speeds have between 1 and 8 choices of companies offering speeds up to or over 25 Mbps.
More internet companies with faster speeds means fewer monopolies and better prices for customers. In promoting a free market for internet, 21520 needs improvement.
TV & Internet Providers in Depth
Below you'll find which TV and internet providers offer service in 21520, along with details on where in 21520 and at what speeds.
XFINITY from Comcast Cable in 21520, MD
XFINITY cable coverage
About 79.03%, or 1,583 people, have XFINITY cable internet available to them in the zip. The company covers the west, southwest, southeast, central, south, east, northeast, and north 21520 area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in much of 21520.
XFINITY from Comcast cable download speeds
XFINITY is below average when comparing download speeds to all other internet providers in 21520. Versus other cable providers in the area, XFINITY cable is the fastest. There are no different maximum speeds throughout 21520. The fastest plan anyone in 21520 can order from XFINITY goes up to 1,200 Mbps, and all 21520 customers can get this speed.
Show all download speeds
- 100.0% up to 1,200.0 Mbps
XFINITY from Comcast cable upload speeds
In 21520 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 21520 cable providers. XFINITY offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 21520 is up to 35 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 35.0 Mbps
QCOL Fiber in 21520, MD
QCOL fiber coverage
About 25.36%, or 508 people, have QCOL fiber internet available to them in the zip. The company covers the northeast, north, northwest, west, east, and central 21520 area. QCOL is an average-sized internet service provider internet service providers in the US, with internet service available in a small portion of 21520.
QCOL fiber download speeds
QCOL is the fastest when comparing download speeds to all other internet providers in 21520. Versus other fiber providers in the area, QCOL fiber is the fastest. There are no different maximum speeds throughout 21520. The fastest plan anyone in 21520 can order from QCOL goes up to 10,000 Mbps, and all 21520 customers can get this speed.
Show all download speeds
- 100.0% up to 10,000.0 Mbps
QCOL fiber upload speeds
In 21520 download speeds tend to be equal to than upload speeds for QCOL fiber. Compared to other ISPs, QCOL is the fastest where upload speeds are concerned, and the fastest compared to other 21520 fiber providers. QCOL offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 21520 is up to 10,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 10,000.0 Mbps
Somerfield Cable TV Cable in 21520, MD
Somerfield Cable TV cable coverage
About 9.39%, or 188 people, have Somerfield Cable TV cable internet available to them in the zip. The company covers the north, northeast, and northwest 21520 area. Somerfield Cable TV is one of the smallest internet service providers internet service providers in the US, with internet service available in a very small piece of 21520.
Somerfield Cable TV cable download speeds
Somerfield Cable TV is below average when comparing download speeds to all other internet providers in 21520. Versus other cable providers in the area, Somerfield Cable TV cable is the slowest. There are no different maximum speeds throughout 21520. The fastest plan anyone in 21520 can order from Somerfield Cable TV goes up to 50 Mbps, and all 21520 customers can get this speed.
Show all download speeds
- 100.0% up to 50.0 Mbps
Somerfield Cable TV cable upload speeds
In 21520 download speeds tend to be faster than than upload speeds for Somerfield Cable TV cable. Compared to other ISPs, Somerfield Cable TV is below average where upload speeds are concerned, and the slowest compared to other 21520 cable providers. Somerfield Cable TV offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 21520 is up to 7.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 7.0 Mbps
PROCOM Fiber in 21520, MD
PROCOM fiber coverage
About 1.50%, or 30 people, have PROCOM fiber internet available to them in the zip. The company covers the southwest 21520 area. PROCOM is a small internet service provider internet service providers in the US, with internet service available in a very small piece of 21520.
PROCOM fiber download speeds
PROCOM is below average when comparing download speeds to all other internet providers in 21520. Versus other fiber providers in the area, PROCOM fiber is the slowest. There are no different maximum speeds throughout 21520. The fastest plan anyone in 21520 can order from PROCOM goes up to 1,000 Mbps, and all 21520 customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
PROCOM fiber upload speeds
In 21520 download speeds tend to be equal to than upload speeds for PROCOM fiber. Compared to other ISPs, PROCOM is below average where upload speeds are concerned, and the slowest compared to other 21520 fiber providers. PROCOM offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 21520 is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
T-Mobile Home Internet Fixed Wireless in 21520, MD
T-Mobile Home Internet fixed wireless coverage
About 88.37%, or 1,770 people, have T-Mobile Home Internet fixed wireless internet available to them in the zip. The company covers the entire 21520 area. T-Mobile Home Internet is one of the largest internet service providers internet service providers in the US, with internet service available in most of 21520.
T-Mobile Home Internet fixed wireless download speeds
T-Mobile Home Internet is below average when comparing download speeds to all other internet providers in 21520. Versus other fixed wireless providers in the area, T-Mobile Home Internet fixed wireless is below average. There are 2 different maximum speeds throughout 21520. The fastest plan anyone in 21520 can order from T-Mobile Home Internet goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the zip-wide average maximum speed for 21520 customers is up to 56 Mbps.
Show all download speeds
- 41.0% up to 100.0 Mbps
- 59.0% up to 25.0 Mbps
T-Mobile Home Internet fixed wireless upload speeds
In 21520 download speeds tend to be faster than than upload speeds for T-Mobile Home Internet fixed wireless. Compared to other ISPs, T-Mobile Home Internet is below average where upload speeds are concerned, and average compared to other 21520 fixed wireless providers. T-Mobile Home Internet 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 21520 is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, T-Mobile Home Internet customers can get speeds up to 10.0 Mbps.
Show all upload speeds
- 41.0% up to 20.0 Mbps
- 59.0% up to 3.0 Mbps
Neubeam Fixed Wireless in 21520, MD
Neubeam fixed wireless coverage
About 82.28%, or 1,648 people, have Neubeam fixed wireless internet available to them in the zip. The company covers the entire 21520 area. Neubeam is a large internet service provider internet service providers in the US, with internet service available in much of 21520.
Neubeam fixed wireless download speeds
Neubeam is below average when comparing download speeds to all other internet providers in 21520. Versus other fixed wireless providers in the area, Neubeam fixed wireless is average. There are 2 different maximum speeds throughout 21520. The fastest plan anyone in 21520 can order from Neubeam goes up to 300 Mbps, the slowest package only goes up to 25 Mbps, and the zip-wide average maximum speed for 21520 customers is up to 77 Mbps.
Show all download speeds
- 18.9% up to 300.0 Mbps
- 81.1% up to 25.0 Mbps
Neubeam fixed wireless upload speeds
In 21520 download speeds tend to be faster than than upload speeds for Neubeam fixed wireless. Compared to other ISPs, Neubeam is below average where upload speeds are concerned, and above average compared to other 21520 fixed wireless providers. Neubeam 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 21520 is up to 40 Mbps. Some customers have slower plan choices, which only go up to 10 Mbps. On average, Neubeam customers can get speeds up to 16 Mbps.
Show all upload speeds
- 18.9% up to 40.0 Mbps
- 81.1% up to 10.0 Mbps
US Cellular Fixed Wireless in 21520, MD
US Cellular fixed wireless coverage
About 75.99%, or 1,522 people, have US Cellular fixed wireless internet available to them in the zip. The company covers the entire 21520 area. US Cellular is one of the largest internet service providers internet service providers in the US, with internet service available in much of 21520.
US Cellular fixed wireless download speeds
US Cellular is the slowest when comparing download speeds to all other internet providers in 21520. Versus other fixed wireless providers in the area, US Cellular fixed wireless is the slowest. There are 2 different maximum speeds throughout 21520. The fastest plan anyone in 21520 can order from US Cellular goes up to 25 Mbps, the slowest package only goes up to 10 Mbps, and the zip-wide average maximum speed for 21520 customers is up to 20 Mbps.
Show all download speeds
- 63.7% up to 25.0 Mbps
- 36.3% up to 10.0 Mbps
US Cellular fixed wireless upload speeds
In 21520 download speeds tend to be faster than than upload speeds for US Cellular fixed wireless. Compared to other ISPs, US Cellular is the slowest where upload speeds are concerned, and the slowest compared to other 21520 fixed wireless providers. US Cellular 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 21520 is up to 3.0 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, US Cellular customers can get speeds up to 2.3 Mbps.
Show all upload speeds
- 63.7% up to 3.0 Mbps
- 36.3% up to 1.0 Mbps
EarthLink Fixed Wireless in 21520, MD
EarthLink fixed wireless coverage
About 47.18%, or 945 people, have EarthLink fixed wireless internet available to them in the zip. The company covers the southeast, west, northeast, east, southwest, central, and north 21520 area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in some of 21520.
EarthLink fixed wireless download speeds
EarthLink is below average when comparing download speeds to all other internet providers in 21520. Versus other fixed wireless providers in the area, EarthLink fixed wireless is below average. There are 2 different maximum speeds throughout 21520. The fastest plan anyone in 21520 can order from EarthLink goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the zip-wide average maximum speed for 21520 customers is up to 31 Mbps.
Show all download speeds
- 7.8% up to 100.0 Mbps
- 92.2% up to 25.0 Mbps
EarthLink fixed wireless upload speeds
In 21520 download speeds tend to be faster than than upload speeds for EarthLink fixed wireless. Compared to other ISPs, EarthLink is below average where upload speeds are concerned, and below average compared to other 21520 fixed wireless providers. EarthLink 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 21520 is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, EarthLink customers can get speeds up to 4.3 Mbps.
Show all upload speeds
- 7.8% up to 20.0 Mbps
- 92.2% up to 3.0 Mbps
AT&T Fixed Wireless in 21520, MD
AT&T fixed wireless coverage
About 47.18%, or 945 people, have AT&T fixed wireless internet available to them in the zip. The company covers the southeast, west, northeast, east, southwest, central, and north 21520 area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in some of 21520.
AT&T fixed wireless download speeds
AT&T is below average when comparing download speeds to all other internet providers in 21520. Versus other fixed wireless providers in the area, AT&T fixed wireless is below average. There are 2 different maximum speeds throughout 21520. The fastest plan anyone in 21520 can order from AT&T goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the zip-wide average maximum speed for 21520 customers is up to 31 Mbps.
Show all download speeds
- 7.8% up to 100.0 Mbps
- 92.2% up to 25.0 Mbps
AT&T fixed wireless upload speeds
In 21520 download speeds tend to be faster than than upload speeds for AT&T fixed wireless. Compared to other ISPs, AT&T is below average where upload speeds are concerned, and below average compared to other 21520 fixed wireless providers. AT&T 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 21520 is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, AT&T customers can get speeds up to 4.3 Mbps.
Show all upload speeds
- 7.8% up to 20.0 Mbps
- 92.2% up to 3.0 Mbps
Verizon Fixed Wireless in 21520, MD
Verizon fixed wireless coverage
About 1.30%, or 26 people, have Verizon fixed wireless internet available to them in the zip. The company covers the northwest 21520 area. Verizon is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of 21520.
Verizon fixed wireless download speeds
Verizon is below average when comparing download speeds to all other internet providers in 21520. Versus other fixed wireless providers in the area, Verizon fixed wireless is the fastest. There are no different maximum speeds throughout 21520. The fastest plan anyone in 21520 can order from Verizon goes up to 300 Mbps, and all 21520 customers can get this speed.
Show all download speeds
- 100.0% up to 300.0 Mbps
Verizon fixed wireless upload speeds
In 21520 download speeds tend to be faster than than upload speeds for Verizon fixed wireless. Compared to other ISPs, Verizon is below average where upload speeds are concerned, and the fastest compared to other 21520 fixed wireless providers. Verizon offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 21520 is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
21520 Internet by Area
This information is most helpful to those looking for homes or considering moving to 21520 or any of the areas nearby.
How does internet in 21520 compare to the rest of Maryland?
Internet speeds in 21520 are much faster versus the average speeds in Maryland: 2,041 Mbps in Maryland versus 3,400 Mbps in the zip. The state has similar internet availability compared to the zip. Average internet coverage in Maryland is 98.96% versus 99.45% in 21520.
What zip codes have widespread internet?
Internet coverage varies by zip code and neighborhood. Some examples in or around 21520 are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does internet service 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
- 21541, MD: more internet coverage, faster speeds
- 21522, MD: more internet coverage, slower speeds
- 21531, MD: more internet coverage, faster speeds
- 15411, PA: less internet coverage, faster speeds
- 21536, MD: less internet coverage, slower speeds
- 15540, PA: less internet coverage, slower speeds
- 15562, PA: more internet coverage, slower speeds
- 15459, PA: more internet coverage, slower speeds
- 26525, WV: more internet coverage, faster speeds
- 15558, PA: less internet coverage, slower speeds
Zip Codes with Similar Populations
- 97836, OR: less internet coverage, slower speeds
- 71016, LA: less internet coverage, slower speeds
- 72013, AR: more internet coverage, slower speeds
- 56672, MN: more internet coverage, slower speeds
- 17505, PA: more internet coverage, faster speeds
- 80447, CO: less internet coverage, slower speeds
- 16256, PA: less internet coverage, faster speeds
- 15639, PA: more internet coverage, slower speeds
- 15480, PA: more internet coverage, slower speeds
- 13459, NY: more internet coverage, slower speeds