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List of Maryland area codes. The blue area is assigned area codes 301, 240, and 227; the red area is area codes 410, 443 and 667. The state of Maryland is served by the following area codes: Area codes. Numbering plan area.
Maryland area codes map gives information about all the area codes of Maryland state along with their counties list.
There are 5 active area codes in the state of Maryland. Each of these area codes are listed below. There are two lists that Wirefly provides for the area codes in Maryland. The first table below shows the most populated cities in Maryland with the area codes listed next to them.
Maryland has 4 area code (s). Clicking on an area code below will show you the Maryland cities in that area code.
An Interactive Map of All Maryland Area Codes - November 2024.
Area codes 410, 443, and 667 are telephone area codes in the North American Numbering Plan (NANP) for the eastern half of the U.S. state of Maryland. The numbering plan area (NPA) includes the Baltimore metropolitan area and the Eastern Shore.
Maryland Telephone Area Codes
