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Area codes 301, 240, and 227 are telephone area codes in the North American Numbering Plan (NANP) for the western part of the U.S. state of Maryland. The numbering plan area (NPA) comprises Maryland's portion of the Greater Washington, D.C. metro area, portions of southern Maryland, along with rural western Maryland.
240 is an area code located in the state of Maryland, US. The largest city it serves is Germantown. Location, time zone and map of the 240 area code
Area code 240 is assigned for use in Maryland since Jun 01, 1997. This area code originated from the 301 area code previously by means of area code split or overlay. View all phone prefixes used in area code 240 or other area codes in Maryland.
Area code 240 serves the state of Maryland. This area code was assigned on June 21st, 1996. On June 1st, 1997 it went into service. 240 is a General Purpose Code. 240 service area does overlap with 301 area codes. Dialing pattern for local calls within the same NPA (area code) is 10D.
240 Area Code located in Maryland, including 110 cities, 12 counties, 1 time zone, map, Census demographics, and 754 active prefixes.
Area code 240 is located in western Maryland and covers Germantown, Silver Spring, Waldorf, Frederick, and Rockville. It is an overlay for area code 301 and serves the same area.
The 240 Area Code is located in the state of Maryland. Area Code 240 is one of the 269 three-digit telephone area codes in the USA. It covers roughly 7,849,300 unique phone numbers and 1,272,954 individuals near the cities of Mount Rainier, Frederick, and Laurel.
Lookup information on Area Code 240 - get demographic, NPA NXX, and other data by area code
Area code 240 is an area code that covers Western Maryland, specifically the part of Maryland that is included in the Washington DC metro area. Area code 240 overlays the area code of 301. Cities that use 240 area code and a coverage map included as well.
Area code 240 is located in western Maryland and covers Germantown, Silver Spring, Waldorf, Frederick, and Rockville. It is an overlay for area code 301 and serves the same area. State: Maryland. Major City: Germantown.