Anne Arundel County
county in Maryland, United States
Key facts
- Country
- United States
- State
- Maryland
- Founded
- April 9, 1650
- Named after
- Anne Arundell
- Seat
- Annapolis
- Largest community
- Glen Burnie
- County executive
- Steuart Pittman
- Total
- 588 sq mi (1,520 km )
- Land
- 415 sq mi (1,070 km )
- Water
- 173 sq mi (450 km ) 29%
- Estimate 2025
- 603,380
- Density
- 1,420/sq mi (547/km )
- Time zone
- UTC−5 ( Eastern )
Article
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, an increase of just under 10% since 2010. Its county seat is Annapolis, which is also the capital of the state. The county is named for Anne Arundell (c. 1615/1616–1649), Lady Baltimore, a member of the Arundell family 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. The county is part of the Central Maryland region of the state. Anne Arundel County is included in the Washington–Baltimore–Arlington combined statistical area.
History