Anne Arundel County, Maryland

Anne Arundel County (listen; /əˈrʌndəl/), also notated as AA or A.A. County, is located in the U.S. state of Maryland. As of the 2020 United States census, its population was 588,261,[1] an increase of just under 10% since 2010. Its county seat is Annapolis,[2] which is also the capital of the state. The county is named for Lady Anne Arundell (c. 1615/1616–1649), a member of the ancient family of Arundells in Cornwall, England, and the wife of Cecilius Calvert, 2nd Baron Baltimore (1605–1675), founder and first lord proprietor of the colony Province of Maryland.

Anne Arundel County
The Anne Arundel County Courthouse facing Church Circle in Annapolis
Location within the U.S. state of Maryland
Maryland's location within the U.S.
Coordinates: 39°00′N 76°36′W
Country United States
State Maryland
FoundedApril 9, 1650
Named forAnne Arundell
SeatAnnapolis
Largest communityGlen Burnie
Government
  County ExecutiveSteuart Pittman
Area
  Total588 sq mi (1,520 km2)
  Land415 sq mi (1,070 km2)
  Water173 sq mi (450 km2)  29%
Population
 (2020)
  Total588,261
  Density1,000/sq mi (390/km2)
Time zoneUTC−5 (Eastern)
  Summer (DST)UTC−4 (EDT)
Congressional districts2nd, 3rd, 4th, 5th
Websitewww.aacounty.org
County boundary

Anne Arundel County is included in the Baltimore–Columbia–Towson metropolitan statistical area, which is also included in the Washington–Baltimore–Arlington combined statistical area.


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