In 21638 there are 9 residential internet providers covering 100.00% of the zip. The average home can get speeds up to 9,831 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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9 Internet Service Providers in 21638
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 21638 are not shown.
21638 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 21638
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 100.00% of 21638. 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 Talkie Communications. Now you can call companies in 21638 with more confidence that they might be available.
How fast are internet speeds in 21638?
The map below shows maximum internet speeds by area in 21638.
Internet Speed Key
The average 21638 home can get up to 9,831 Mbps on their internet plan. For most people, the fastest download speed in the zip is 10,000 Mbps, which 98.12% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 1.88% 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 21638.
Internet speeds tend to be faster in the southeast parts of 21638, and slower in the south areas of the zip.
What type of internet should I choose in 21638?
The fastest internet for you may vary based on where in 21638 you live. If speed is your main concern, fiber will be the fastest internet in the zip.
- Fiber is the fastest internet type for 99.92% of 21638 homes.
- Cable is fastest for less than 1% 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 21638 homes.
Internet Market Health in 21638
Internet Competition Key
The map shows how competitive the 21638 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 21638 based on what connections the average home has availabile:
- Average number of internet service providers to a home: 6.1 (healthy)
- Average types of service (fiber, cable, DSL, etc): 2.9 (healthy)
- Average providers with broadband (25 Mbps+) speeds: 6.1 (healthy)
Overall, competition is healthy.
21638 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, 21638 homes have between 1 and 3 options. The type(s) of service available are fiber, cable, and fixed wireless, 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 similar. 21638 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, 21638 is doing better than most.
TV & Internet Providers in Depth
Below you'll find which TV and internet providers offer service in 21638, along with details on where in 21638 and at what speeds.
Atlantic Broadband Cable in 21638, MD
Atlantic Broadband cable coverage
About 99.80%, or 5,048 people, have Atlantic Broadband cable internet available to them in the zip. The company covers the entire 21638 area. Atlantic Broadband is a large internet service provider internet service providers in the US, with internet service available in most of 21638.
Atlantic Broadband cable download speeds
Atlantic Broadband is below average when comparing download speeds to all other internet providers in 21638. Versus other cable providers in the area, Atlantic Broadband cable is the fastest. There are no different maximum speeds throughout 21638. The fastest plan anyone in 21638 can order from Atlantic Broadband goes up to 1,000 Mbps, and all 21638 customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Atlantic Broadband cable upload speeds
In 21638 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 21638 cable providers. Atlantic Broadband offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 21638 is up to 50 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 50.0 Mbps
Talkie Communications Fiber in 21638, MD
Talkie Communications fiber coverage
About 98.12%, or 4,963 people, have Talkie Communications fiber internet available to them in the zip. The company covers the southeast, east, central, north, northwest, west, and northeast 21638 area. Talkie Communications is a large internet service provider internet service providers in the US, with internet service available in most of 21638.
Talkie Communications fiber download speeds
Talkie Communications is the fastest when comparing download speeds to all other internet providers in 21638. Versus other fiber providers in the area, Talkie Communications fiber is the fastest. There are no different maximum speeds throughout 21638. The fastest plan anyone in 21638 can order from Talkie Communications goes up to 10,000 Mbps, and all 21638 customers can get this speed.
Show all download speeds
- 100.0% up to 10,000.0 Mbps
Talkie Communications fiber upload speeds
In 21638 download speeds tend to be equal to than upload speeds for Talkie Communications fiber. Compared to other ISPs, Talkie Communications is the fastest where upload speeds are concerned, and the fastest compared to other 21638 fiber providers. Talkie Communications offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 21638 is up to 10,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 10,000.0 Mbps
XFINITY from Comcast Fiber in 21638, MD
XFINITY fiber coverage
About 85.75%, or 4,337 people, have XFINITY fiber internet available to them in the zip. The company covers the southeast, east, north, central, northwest, west, south, and northeast 21638 area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in most of 21638.
XFINITY from Comcast fiber download speeds
XFINITY is below average when comparing download speeds to all other internet providers in 21638. Versus other fiber providers in the area, XFINITY fiber is one of the slowest. There are no different maximum speeds throughout 21638. The fastest plan anyone in 21638 can order from XFINITY goes up to 1,000 Mbps, and all 21638 customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
XFINITY from Comcast fiber upload speeds
In 21638 download speeds tend to be equal to than upload speeds for XFINITY fiber. Compared to other ISPs, XFINITY is below average where upload speeds are concerned, and below average compared to other 21638 fiber providers. XFINITY offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 21638 is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
Atlantic Broadband Fiber in 21638, MD
Atlantic Broadband fiber coverage
About 34.32%, or 1,736 people, have Atlantic Broadband fiber internet available to them in the zip. The company covers the southeast, north, northwest, and central 21638 area. Atlantic Broadband is a large internet service provider internet service providers in the US, with internet service available in a small portion of 21638.
Atlantic Broadband fiber download speeds
Atlantic Broadband is below average when comparing download speeds to all other internet providers in 21638. Versus other fiber providers in the area, Atlantic Broadband fiber is one of the slowest. There are no different maximum speeds throughout 21638. The fastest plan anyone in 21638 can order from Atlantic Broadband goes up to 1,000 Mbps, and all 21638 customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Atlantic Broadband fiber upload speeds
In 21638 download speeds tend to be faster than than upload speeds for Atlantic Broadband fiber. Compared to other ISPs, Atlantic Broadband is below average where upload speeds are concerned, and the slowest compared to other 21638 fiber 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 21638 is up to 1,000 Mbps. Some customers have slower plan choices, which only go up to 600 Mbps. On average, Atlantic Broadband customers can get speeds up to 818 Mbps.
Show all upload speeds
- 54.5% up to 1,000.0 Mbps
- 45.5% up to 600.0 Mbps
T-Mobile Home Internet Fixed Wireless in 21638, MD
T-Mobile Home Internet fixed wireless coverage
About 90.09%, or 4,557 people, have T-Mobile Home Internet fixed wireless internet available to them in the zip. The company covers the southeast, east, central, north, northwest, west, south, and southwest 21638 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 21638.
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 21638. Versus other fixed wireless providers in the area, T-Mobile Home Internet fixed wireless is below average. There are 2 different maximum speeds throughout 21638. The fastest plan anyone in 21638 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 21638 customers is up to 34 Mbps.
Show all download speeds
- 11.8% up to 100.0 Mbps
- 88.2% up to 25.0 Mbps
T-Mobile Home Internet fixed wireless upload speeds
In 21638 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 below average compared to other 21638 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 21638 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 5.0 Mbps.
Show all upload speeds
- 11.8% up to 20.0 Mbps
- 88.2% up to 3.0 Mbps
Verizon Fixed Wireless in 21638, MD
Verizon fixed wireless coverage
About 77.60%, or 3,925 people, have Verizon fixed wireless internet available to them in the zip. The company covers the southeast, east, central, and north 21638 area. Verizon is one of the largest internet service providers internet service providers in the US, with internet service available in much of 21638.
Verizon fixed wireless download speeds
Verizon is below average when comparing download speeds to all other internet providers in 21638. Versus other fixed wireless providers in the area, Verizon fixed wireless is the fastest. There are no different maximum speeds throughout 21638. The fastest plan anyone in 21638 can order from Verizon goes up to 300 Mbps, and all 21638 customers can get this speed.
Show all download speeds
- 100.0% up to 300.0 Mbps
Verizon fixed wireless upload speeds
In 21638 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 21638 fixed wireless providers. Verizon offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 21638 is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
EarthLink Fixed Wireless in 21638, MD
EarthLink fixed wireless coverage
About 60.44%, or 3,057 people, have EarthLink fixed wireless internet available to them in the zip. The company covers the east, southeast, north, northwest, central, and northeast 21638 area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of 21638.
EarthLink fixed wireless download speeds
EarthLink is one of the slowest when comparing download speeds to all other internet providers in 21638. Versus other fixed wireless providers in the area, EarthLink fixed wireless is one of the slowest. There are 2 different maximum speeds throughout 21638. The fastest plan anyone in 21638 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 21638 customers is up to 33 Mbps.
Show all download speeds
- 11.0% up to 100.0 Mbps
- 89.0% up to 25.0 Mbps
EarthLink fixed wireless upload speeds
In 21638 download speeds tend to be faster than than upload speeds for EarthLink fixed wireless. Compared to other ISPs, EarthLink is one of the slowest where upload speeds are concerned, and one of the slowest compared to other 21638 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 21638 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 4.9 Mbps.
Show all upload speeds
- 11.0% up to 20.0 Mbps
- 89.0% up to 3.0 Mbps
AT&T Fixed Wireless in 21638, MD
AT&T fixed wireless coverage
About 60.44%, or 3,057 people, have AT&T fixed wireless internet available to them in the zip. The company covers the east, southeast, north, northwest, central, and northeast 21638 area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of 21638.
AT&T fixed wireless download speeds
AT&T is one of the slowest when comparing download speeds to all other internet providers in 21638. Versus other fixed wireless providers in the area, AT&T fixed wireless is one of the slowest. There are 2 different maximum speeds throughout 21638. The fastest plan anyone in 21638 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 21638 customers is up to 33 Mbps.
Show all download speeds
- 11.0% up to 100.0 Mbps
- 89.0% up to 25.0 Mbps
AT&T fixed wireless upload speeds
In 21638 download speeds tend to be faster than than upload speeds for AT&T fixed wireless. Compared to other ISPs, AT&T is one of the slowest where upload speeds are concerned, and one of the slowest compared to other 21638 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 21638 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 4.9 Mbps.
Show all upload speeds
- 11.0% up to 20.0 Mbps
- 89.0% up to 3.0 Mbps
21638 Internet by Area
This information is most helpful to those looking for homes or considering moving to 21638 or any of the areas nearby.
How does internet in 21638 compare to the rest of Maryland?
Internet speeds in 21638 are much faster versus the average speeds in Maryland: 2,041 Mbps in Maryland versus 9,831 Mbps in the zip. The state has similar internet availability compared to the zip. Average internet coverage in Maryland is 98.96% versus 100.00% in 21638.
What zip codes have widespread internet?
Internet coverage varies by zip code and neighborhood. Some examples in or around 21638 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
- 21658, MD: less internet coverage, slower speeds
- 21619, MD: equal internet coverage, slower speeds
- 21666, MD: less internet coverage, slower speeds
- 21679, MD: equal internet coverage, slower speeds
- 21624, MD: less internet coverage, slower speeds
- 21647, MD: equal internet coverage, slower speeds
- 21617, MD: less internet coverage, slower speeds
- 21625, MD: less internet coverage, slower speeds
- 21657, MD: equal internet coverage, slower speeds
- 21641, MD: equal internet coverage, slower speeds
Zip Codes with Similar Populations
- 81137, CO: less internet coverage, slower speeds
- 25506, WV: less internet coverage, slower speeds
- 75831, TX: less internet coverage, slower speeds
- 24801, WV: less internet coverage, slower speeds
- 76059, TX: less internet coverage, slower speeds
- 24563, VA: less internet coverage, slower speeds
- 77050, TX: equal internet coverage, slower speeds
- 78025, TX: less internet coverage, slower speeds
- 78263, TX: less internet coverage, slower speeds
- 22947, VA: less internet coverage, slower speeds