Arlington County is a county in the Commonwealth of Virginia.
Arlington County Fire Department Response Compilation 3 by hldtrm
It is coterminous with the U.S. Census Bureau-census-designated place of Arlington, which is the second-largest principal city of the Washington metropolitan area.
A census-designated place is a concentration of population defined by the United States Census Bureau for statistical purposes only.
Principal cities of metros are the main core cities in each metropolitan area.
As a result, the county is often referred to in the region simply as "Arlington" or "Arlington, Virginia".
In 2015, the county's population was estimated at 229,164, which would make it the fourth-largest city in the Commonwealth if it were incorporated as such.
The land that became Arlington was originally donated by Virginia to the United States government to form part of the new federal capital district of Columbia.
A capital territory or capital district is normally a specially designated administrative division where a country's seat of government is located.
On February 27, 1801, a year after moving from the temporary National Capital at Philadelphia to the City of Washington, the United States Congress organized the area as a subdivision of the District named Alexandria County.
The United States Congress is the bicameral legislature of the federal government of the United States consisting of two chambers: the Senate and the House of Representatives.
Philadelphia is the largest city in the Commonwealth of Pennsylvania and the fifth-most populous in the United States, with an estimated population in 2014 of 1,560,297.
In 1846, Congress returned the land southwest of the Potomac River donated by Virginia due to issues involving Congressional representation and the abolition of slavery.
The Potomac River is located along the mid-Atlantic coast of the United States and flows into the Chesapeake Bay.
The General Assembly of Virginia changed the county's name to Arlington in 1920 to avoid confusion with the adjacent City of Alexandria.
The Virginia General Assembly is the legislative body of the Commonwealth of Virginia, and the oldest continuous law-making body in the New World, established on July 30, 1619.
The county is situated in Northern Virginia on the south bank of the Potomac River directly across from Washington, D.C. Arlington is also bordered by Fairfax County and City of Falls Church to the northwest, west and southwest, and the City of Alexandria to the southeast.
Northern Virginia – commonly referred to as NOVA – comprises several counties and independent cities in the Commonwealth of Virginia, in a widespread region generally radiating southerly and westward from Washington, D.C. With 2.8 million residents, it is the most populous region of Virginia and the Washington metropolitan area.
Washington, D.C., formally the District of Columbia and commonly referred to as "Washington", "the District", or simply "D.C.", is the capital of the United States.
With a land area of 26 square miles, Arlington is the geographically smallest self-governing county in the United States, and due to state law regarding population density, has no incorporated towns within its borders.
An incorporated town is a town that is a municipal corporation.
As of the 2010 census, the population was 207,627.
Due to the county's proximity to downtown Washington, D.C., Arlington is headquarters to many departments and agencies of the federal government of the United States, including the Department of Defense at the Pentagon, Drug Enforcement Administration, Transportation Security Administration, and Defense Advanced Research Projects Agency.
The Pentagon is the headquarters of the United States Department of Defense, located in Arlington County, Virginia, across the Potomac River from Washington, D.C. As a symbol of the U.S. military, The Pentagon is often used metonymically to refer to the U.S. Department of Defense.
The government of the United States of America is the federal government of the republic of fifty states that constitute the United States, as well as one capital district, and several other territories.
The Drug Enforcement Administration is a United States federal law enforcement agency under the U.S. Department of Justice, tasked with combating drug smuggling and use within the United States.
It is also home to Ronald Reagan Washington National Airport.
Ronald Reagan Washington National Airport is an international airport 3 miles south of downtown Washington, D.C. in Arlington County, Virginia, United States.
Ronald Wilson Reagan was an American politician and actor who served as the 40th President of the United States from 1981 to 1989.
The many federal agencies, government contractors, and service industries contribute to Arlington's stable economy.
Arlington is also the location of national memorials and museums, including Arlington National Cemetery, the Pentagon Memorial, the Marine Corps War Memorial, and the United States Air Force Memorial.
Arlington National Cemetery is a United States military cemetery in Arlington County, Virginia, across the Potomac River from Washington, D.C., in whose 624 acres the dead of the nation's conflicts have been buried, beginning with the American Civil War, as well as reinterred dead from earlier wars.
The Pentagon Memorial, located just southwest of The Pentagon in Arlington County, Virginia, is a permanent outdoor memorial to the 184 people who died as victims in the building and on American Airlines Flight 77 during the September 11 attacks.
It is the highest-income county in the United States by median family income, though it has the highest concentration of singles in the region.
According to a 2016 study by Bankrate.com, Arlington is the best place to retire, with nearby Alexandria coming in at second place.
Criteria of the study included cost of living, rates of violent and property crimes, walkability, health care quality, state and local tax rates, weather, local culture and well-being for senior citizens.