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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. 227.
Area codes 410, 443, and 667. 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. The three area codes are overlay codes for one numbering plan area ...
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 ...
There are 23 counties and one independent city in the U.S. state of Maryland. Though formally an independent city rather than a county, the City of Baltimore is considered the equal of a county for most purposes and is functionally a county-equivalent in most respects. Many of the counties in Maryland were named for relatives of the Barons ...
List of Maryland area codes; 0–9. Area codes 301, 240, and 227; Area codes 410, 443, and 667
Map of the United States with Maryland highlighted. Maryland is a state located in the Southern United States. [1] As of the 2020 United States census, Maryland is the 18th-most populous state with 6,177,224 inhabitants and the ninth-smallest by land area, spanning 9,707.24 square miles (25,141.6 km 2) of land. [2]
GPO. Older variable-length official US Government Printing Office abbreviations. AP. Abbreviations from the AP Stylebook [ 1 ](bold red text shows differences between GPO and AP) Codes and abbreviations for U.S. states, federal district, territories, and other regions. Name. Status of region. ISO. ANSI.
457. Louisiana (Shreveport–Bossier City, Monroe, Alexandria, Fisher, Tallulah, and most of northern Louisiana) September 25, 2025[3] will overlay area code 318 by 2026. previously a fictitious area code assigned to identify Naked DSL / Dry Loop and dedicated data lines in Saskatchewan.