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  2. List of counties in Maryland - Wikipedia

    en.wikipedia.org/wiki/List_of_counties_in_Maryland

    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 ...

  3. List of Maryland area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_Maryland_area_codes

    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.

  4. Area codes 410, 443, and 667 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_410,_443,_and_667

    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 ...

  5. Area codes 301, 240, and 227 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_301,_240,_and_227

    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 ...

  6. National Harbor, Maryland - Wikipedia

    en.wikipedia.org/wiki/National_Harbor,_Maryland

    2426650/2583665. Website. Official website. National Harbor is a census-designated place (CDP) in Prince George's County, Maryland, United States, located along the Potomac River near the Woodrow Wilson Bridge and just south of Washington, D.C. It originated as a 300-acre (1.2 km 2) multi-use waterfront development.

  7. College Park, Maryland - Wikipedia

    en.wikipedia.org/wiki/College_Park,_Maryland

    ZIP Codes: 20740–20742. ... 2390578: Website: www.collegeparkmd.gov: College Park is a city in Prince George's County, Maryland ... Early maps called the local ...

  8. Chestertown, Maryland - Wikipedia

    en.wikipedia.org/wiki/Chestertown,_Maryland

    FIPS code. 24-16225. GNIS feature ID. 0589954. Website. Chestertown, Maryland. Chestertown is a town in Kent County, Maryland, United States. The population was 5,532 as of the 2020 census. It is the county seat of Kent County.

  9. Hampstead, Maryland - Wikipedia

    en.wikipedia.org/wiki/Hampstead,_Maryland

    FIPS code. 24-36500. GNIS feature ID. 0590408. Website. www.hampsteadmd.gov. Hampstead is a town in Carroll County in the U.S. state of Maryland. The population was 6,323 at the 2010 census.