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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. The state of Maryland is served by the following area codes:
Toggle Area codes by country, state, province, and regions subsection. ... overlaid on 301; 2023: overlaid by 227; 241: not in use; available for geographic ...
Pages in category "Area codes in Maryland" The following 3 pages are in this category, out of 3 total. ... Area codes 301, 240, and 227; Area codes 410, 443, and 667 ...
To find out the 25 poorest and richest area codes, GOBankingRates used the 2015 Census Community Survey, the most recent data available, to rank cities across the nation in order of mean household ...
Other area codes for this state are blue, this area code is red. Date: ... Area codes 301, 240, and 227; Metadata. This file contains additional information, probably ...
An area code overlay is a numbering plan area (NPA) in the North American Numbering Plan ... 227, 240: 301: Washington, D.C. suburbs and panhandle of Maryland: 249: 705:
Area codes in Washington (state) (7 P) Area codes in West Virginia (1 P) Area codes in Wisconsin (7 P) Area codes in Wyoming (1 P) This page was last edited on 24 ...