Arlington County is a county in the Commonwealth of Virginia, located directly across the Potomac River from Washington, D.C. As of 2019, the county's population was about 230,050. The county is situated in Northern Virginia and is home to the Pentagon and Arlington National Cemetery, as well as many important landmarks, institutions and businesses.

Arlington County is governed by a five-member Board of Supervisors, elected at-large to staggered four-year terms. The County Manager is the chief administrative officer of the county, appointed by the Board of Supervisors. The County Manager is responsible for the day-to-day operations of the county government.

The county is served by the Arlington County Police Department, the Arlington County Fire Department, and the Arlington County Sheriff's Office. The county is also served by the Arlington Public Schools system, which includes 24 elementary schools, seven middle schools, and five high schools.

The county is home to several major employers, including the Pentagon, the Department of Defense, the Department of Homeland Security, and the Department of State. The county is also home to several universities, including George Mason University, Marymount University, and the University of Virginia.

The county is served by two major airports, Washington Dulles International Airport and Ronald Reagan Washington National Airport. The county is also served by several major highways, including Interstate 66, Interstate 395, and the George Washington Memorial Parkway.

For the most up-to-date and in-depth information, please check the public records links below.