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Anne Arundel County Maryland ☎ +1 410-222-2222 Last Updated: 09/29/2026 |
| Anne Arundel 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. | |