History of Anne Arundel County, Maryland in Timeline

By Popular Timelines Editorial Team · Updated: June 13, 2025

Anne Arundel County, Maryland, with a population of 588,261 as of 2020, is part of the Central Maryland region and the Washington–Baltimore–Arlington combined statistical area. Its county seat is Annapolis, which also serves as Maryland's state capital. The county's name honors Anne Arundell, Lady Baltimore, wife of Cecilius Calvert, the 2nd Baron Baltimore and founder of the Maryland colony.

January 1919: Annexation to Baltimore

In January 1919, during the third major annexation, the communities and areas of Brooklyn and Curtis Bay neighborhoods (and adjacent Fairfield, Wagner's Point [also known as East Brooklyn], Arundel Cove [off of Curtis Creek], and Hawkins Point), lying south of the Patapsco River were annexed from Anne Arundel County to Baltimore.

1964: Lyndon Johnson win in the presidential election

In the 1964 presidential election, Lyndon Johnson won the landslide election.

1965: Charter Government Established

In 1965, Anne Arundel County established a charter government.

2000: Census of 2000

As of the census of 2000, 489,656 people, 178,670 households, and 129,178 families were residing in Anne Arundel County.

2000: Median Household Income in 2000

In 2000, the median income for a household in Anne Arundel County was $61,768, and the median income for a family was $69,019.

2007: Estimated Median Income in 2007

As of a 2007 estimate, the median household income in Anne Arundel County was $79,294, and the median family income was $91,071.

2007: Maryland House of Correction Closure

In 2007, the Maryland House of Correction, operated by the Maryland Department of Public Safety and Correctional Services, which was located in Anne Arundel County, was closed.

2008: Voted Republican in 2008

In 2008, Anne Arundel County voted Republican.

2010: 2010 United States Census Data

As of the 2010 United States census, Anne Arundel County had a population of 537,656 people residing in 199,378 households, with 139,262 families.

2010: 2010 Census Results

In 2010, the United States Census data indicated a population count for Anne Arundel County.

2012: Voted Republican in 2012

In 2012, Anne Arundel County voted Republican.

November 2014: Principal Employers in the County

In November 2014, the Maryland Department of Business and Economic Development reported on the principal employers in Anne Arundel County, excluding U.S. post offices and state and local governments, but including public institutions of higher education.

2016: Voted Democratic in 2016

In 2016, Anne Arundel County voted Democratic.

2016: Anne Arundel County voted for Hillary Clinton

In the 2016 presidential election, Anne Arundel County voted for Hillary Clinton over Donald Trump by 6,016 votes, marking the first time the county supported a Democrat for president since 1964.