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Area code 301 was the first area code for all of Maryland, from 1947, when the area code system was created, until 1991, when everything from Baltimore eastward split off as area code 410. In 1997, area code 240 was added as an overlay area code for the 301 territory. On June 14, 2023, a third overlay code, 227, was added to provide more ...
The blue area is assigned area codes 301, 240, and 227; the red area is area codes 410, 443 and 667 ... western Maryland, including its suburbs of Washington, D.C ...
Seattle, Shoreline, Lake Forest Park, Mercer Island, Bainbridge Island, Vashon Island. Original statewide area code until 1957, when area code 509 was created for Eastern Washington. Further splits in 1995 to create area code 360 for most of Western Washington, and 1997 to form area codes 253 and 425. 564 will be added to the 206 area in 2025. 509.
Area codes in the United States This page was last edited on 13 June 2023, at 05:48 (UTC) . Text is available under the Creative Commons Attribution-ShareAlike License 4.0 ; additional terms may apply.
Area codes with two identical trailing digits are easily recognizable codes ... Washington (Seattle area) 1947: ... Overlaid on 240/301; 228: Mississippi ...
301, 240, and 227 – portions of Maryland in the Washington metropolitan area, southern Maryland, and western Maryland 540 and 826 - Northern Virginia suburbs of City of Fredericksburg, (Western) Loudon County, Spotsylvania County and Stafford County along with nearby Fauquier County
Area codes 301, 240, and 227 From a page move : This is a redirect from a page that has been moved (renamed). This page was kept as a redirect to avoid breaking links, both internal and external, that may have been made to the old page name.
By the fall of 1990, it was apparent that Maryland needed another area code. In November 1990, a plan for a second area code, 410, was announced, that would be assigned to the Baltimore metropolitan area and the Eastern Shore, while western and southern Maryland, including the Washington suburbs, would retain area code 301. [2]