In 21157 there are 4 residential Fiber providers covering 52.13% of the zip. The average home can get speeds up to 1,951 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 Fiber internet providers in 21157, MD.
To see availability maps for all providers including fiber, cable, DSL, and more in 21157, MD please click below.
Fiber Internet Service Providers in 21157
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 21157 are not shown.
21157 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 21157 is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 52.13% of 21157. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is Antietam Broadband. Call one of the companies with service in 21157 above to see who has service at your home.
How fast is fiber internet in 21157?
The map below shows maximum fiber internet speeds by area in 21157.
Fiber Internet Speed Key
The average 21157 home can get up to 1,951 Mbps on their fiber internet plan. The fastest fiber download speed in the zip is 5,000 Mbps, which 7.35% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 22.47% 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 21157.
Fiber internet speeds tend to be faster in the north parts of 21157, and slower in the northwest areas of the zip.
Is fiber the fastest internet I can get in 21157?
The fastest internet for you may vary based on where in 21157 you live. In general, cable competes most often with fiber in the zip.
- Fiber is the fastest internet type for 27.73% of 21157 homes.
- Cable is fastest for 71.10% 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 21157 homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in 21157, along with details on where in 21157 and at what speeds.
ting Fiber in 21157, MD
ting fiber coverage
About 27.53%, or 10,674 people, have ting fiber internet available to them in the zip. The company covers the central, northwest, west, north, northeast, south, east, and southeast 21157 area. ting is a large internet service provider internet service providers in the US, with internet service available in a small portion of 21157.
ting fiber download speeds
ting is below average when comparing download speeds to all other internet providers in 21157. Versus other fiber providers in the area, ting fiber is the slowest. There are no different maximum speeds throughout 21157. The fastest plan anyone in 21157 can order from ting goes up to 1,000 Mbps, and all 21157 customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
ting fiber upload speeds
In 21157 download speeds tend to be equal to than upload speeds for ting fiber. Compared to other ISPs, ting is above average where upload speeds are concerned, and below average compared to other 21157 fiber providers. ting offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 21157 is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
XFINITY from Comcast Fiber in 21157, MD
XFINITY fiber coverage
About 13.69%, or 5,306 people, have XFINITY fiber internet available to them in the zip. The company covers the southeast, southwest, northeast, and south 21157 area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of 21157.
XFINITY from Comcast fiber download speeds
XFINITY is above average when comparing download speeds to all other internet providers in 21157. Versus other fiber providers in the area, XFINITY fiber is below average. There are 2 different maximum speeds throughout 21157. The fastest plan anyone in 21157 can order from XFINITY goes up to 2,000 Mbps, the slowest package only goes up to 1,200 Mbps, and the zip-wide average maximum speed for 21157 customers is up to 1,818 Mbps.
Show all download speeds
- 77.3% up to 2,000.0 Mbps
- 22.7% up to 1,200.0 Mbps
XFINITY from Comcast fiber upload speeds
In 21157 download speeds tend to be faster than than upload speeds for XFINITY fiber. Compared to other ISPs, XFINITY is below average where upload speeds are concerned, and the slowest compared to other 21157 fiber providers. XFINITY offers 3 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 21157 is up to 1,000 Mbps. Some customers have slower plan choices, which only go up to 35 Mbps. On average, XFINITY customers can get speeds up to 212 Mbps.
Show all upload speeds
- 1.5% up to 1,000.0 Mbps
- 75.8% up to 250.0 Mbps
- 22.7% up to 35.0 Mbps
Quantum Internet Service Fiber in 21157, MD
Quantum Internet Service fiber coverage
About 9.49%, or 3,678 people, have Quantum Internet Service fiber internet available to them in the zip. The company covers the central, northeast, west, southwest, northwest, and east 21157 area. Quantum Internet Service is a large internet service provider internet service providers in the US, with internet service available in a very small piece of 21157.
Quantum Internet Service fiber download speeds
Quantum Internet Service is above average when comparing download speeds to all other internet providers in 21157. Versus other fiber providers in the area, Quantum Internet Service fiber is below average. There are no different maximum speeds throughout 21157. The fastest plan anyone in 21157 can order from Quantum Internet Service goes up to 2,000 Mbps, and all 21157 customers can get this speed.
Show all download speeds
- 100.0% up to 2,000.0 Mbps
Quantum Internet Service fiber upload speeds
In 21157 download speeds tend to be equal to than upload speeds for Quantum Internet Service fiber. Compared to other ISPs, Quantum Internet Service is above average where upload speeds are concerned, and below average compared to other 21157 fiber providers. Quantum Internet Service offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 21157 is up to 2,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 2,000.0 Mbps
Antietam Broadband Fiber in 21157, MD
Antietam Broadband fiber coverage
About 7.35%, or 2,851 people, have Antietam Broadband fiber internet available to them in the zip. The company covers the northeast and north 21157 area. Antietam Broadband is a large internet service provider internet service providers in the US, with internet service available in a very small piece of 21157.
Antietam Broadband fiber download speeds
Antietam Broadband is the fastest when comparing download speeds to all other internet providers in 21157. Versus other fiber providers in the area, Antietam Broadband fiber is the fastest. There are no different maximum speeds throughout 21157. The fastest plan anyone in 21157 can order from Antietam Broadband goes up to 5,000 Mbps, and all 21157 customers can get this speed.
Show all download speeds
- 100.0% up to 5,000.0 Mbps
Antietam Broadband fiber upload speeds
In 21157 download speeds tend to be equal to than upload speeds for Antietam Broadband fiber. Compared to other ISPs, Antietam Broadband is the fastest where upload speeds are concerned, and the fastest compared to other 21157 fiber providers. Antietam Broadband offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 21157 is up to 5,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 5,000.0 Mbps
21157 Fiber by Area
This information is most helpful to those looking for homes or considering moving to 21157 or any of the areas nearby.
How does fiber internet in 21157 compare to the rest of Maryland?
Fiber internet speeds in 21157 are much faster versus the average speeds in Maryland: 0.00 Mbps in Maryland versus 1,951 Mbps in the zip. The state has similar fiber availability compared to the zip. Average fiber coverage in Maryland is 0.00% versus 52.13% in 21157.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around 21157 are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does fiber 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
- 21158, MD: more fiber coverage, slower speeds
- 21048, MD: less fiber coverage, slower speeds
- 21776, MD: less fiber coverage, faster speeds
- 21074, MD: more fiber coverage, faster speeds
- 21155, MD: more fiber coverage, slower speeds
- 21102, MD: more fiber coverage, faster speeds
- 21791, MD: less fiber coverage, faster speeds
- 21071, MD: more fiber coverage, slower speeds
- 21136, MD: more fiber coverage, slower speeds
- 21787, MD: more fiber coverage, faster speeds
Zip Codes with Similar Populations
- 78412, TX: more fiber coverage, faster speeds
- 75042, TX: more fiber coverage, faster speeds
- 75069, TX: more fiber coverage, faster speeds
- 28451, NC: more fiber coverage, faster speeds
- 28411, NC: more fiber coverage, faster speeds
- 28403, NC: more fiber coverage, faster speeds
- 75220, TX: more fiber coverage, faster speeds
- 77382, TX: more fiber coverage, faster speeds
- 77520, TX: less fiber coverage, faster speeds
- 27704, NC: more fiber coverage, faster speeds