What is Area codes 301 and 240?
'''Area codes 301 and 240''' are [[area code]]s that are part of [[Maryland]]. Area code 301 is one of the earliest area codes that were made in 1947. It initially covered the entire state until 1991, which is when it was split by 410,<ref>https://www.nationalnanpa.com/pdf/old_pl/IL%2090-12-049.pdf</ref> which covers the eastern part of the state, while 301 now covers the western portion of the state, including College Park, the [[Washington County, Maryland|Washington]], [[Saint Mary's County, Maryland|St. Mary's,]] [[Prince George's County, Maryland|Prince George's]], [[Allegany County, Maryland|Allegany]], [[Charles County, Maryland|Charles]], [[Garrett County, Maryland|Garrett]], and [[Montgomery County, Maryland|Montgomery]] counties. It was overlaid by 240 in 1997,<ref>https://www.nationalnanpa.com/pdf/old_pl/IL%2096-06-009.pdf</ref> and then overlaid by 227 on June 14, 2023.<ref>{{Cite web|title=Area Code 227 - Details, official location, official service date, history and time zone|url=https://www.areacodehelp.com/where/area_code_227.shtml|access-date=2022-10-10|website=www.areacodehelp.com|language=en}}</ref> == References == {{reflist}} [[Category:Maryland]] [[Category:Area codes in the United States|301]] {{us-stub}}