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Loudoun County, Virginia

Loudoun County
Loudoun County Courthouse and a World War II monument (right) in Leesburg, February 2021
Loudoun County Courthouse and a World War II monument (right) in Leesburg, February 2021
Flag of Loudoun County
Official seal of Loudoun County
Motto: 
"I Byde My Time"[1]
Map of Virginia highlighting Loudoun County
Location within the U.S. state of Virginia
Map of the United States highlighting Virginia
Virginia's location within the U.S.
Coordinates: 39°05′N 77°38′W / 39.09°N 77.64°W / 39.09; -77.64
Country United States
State Virginia
Founded1757
Named forJohn Campbell, 4th Earl of Loudoun[2]
SeatLeesburg
Largest townLeesburg
Area
 • Total
521.33 sq mi (1,350.2 km2)
 • Land515.74 sq mi (1,335.8 km2)
 • Water5.6 sq mi (15 km2)  1.1%
Population
 (2020)
 • Total
420,959 Increase
 • Density810/sq mi (310/km2)
Time zoneUTC−5 (Eastern)
 • Summer (DST)UTC−4 (EDT)
Congressional district10th
Websiteloudoun.gov

Loudoun County (/ˈldən/) is in the northern part of the Commonwealth of Virginia in the United States. In 2020, the census returned a population of 420,959,[3] making it Virginia's third-most populous county. The county seat is Leesburg.[4] Loudoun County is part of the Washington–Arlington–Alexandria, DC–VA–MD–WV Metropolitan Statistical Area.

As of 2023, Loudoun County had a median household income of $156,821,[5] the highest of any county in the nation.[6]

  1. ^ Rosalind S. Helderman, Proud Past, Bright Future Rub Elbows in Today's Loudoun, Washington Post (April 21, 2005), page LZ03.
  2. ^ "About Loudoun - History". Loudoun County. Retrieved January 3, 2013.
  3. ^ "Population and Housing Unit Estimates". Retrieved March 26, 2020.
  4. ^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
  5. ^ "USDA ERS - Download the Data". www.ers.usda.gov. Retrieved July 28, 2024.
  6. ^ "U.S. Census Bureau QuickFacts: Loudoun County, Virginia". www.census.gov.

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