Loudoun County, Virginia

Loudoun County
County
Loudoun County Courthouse and a World War II monument (right) in Leesburg, February 2021
Flag Seal
Motto:  "I Byde My Time"[1]
Location within the U.S. state of 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
Founded	1757
Named for	John Campbell, 4th Earl of Loudoun[2]
Seat	Leesburg
Largest town	Leesburg
Area
• Total	521.33 sq mi (1,350.2 km2)
• Land	515.74 sq mi (1,335.8 km2)
• Water	5.6 sq mi (15 km2)  1.1%
Population  (2020)
• Total	420,959
• Density	810/sq mi (310/km2)
Time zone	UTC−5 (Eastern)
• Summer (DST)	UTC−4 (EDT)
Congressional district	10th
Website	www.loudoun.gov

Loudoun County (/ˈlaʊdən/ LOWD-ən) is a county in the U.S. state of Virginia. It is part of the Washington Metropolitan Area. The 2020 U.S. Census said 420,959 people live there.^[3] Its county seat is Leesburg.^[4][5]

The number of people grew 84 percent from 2000 to 2010, and 34 percent from 2010 to 2020.

As of 2022, Loudoun County has the highest median household income of any county in the United States ($170,463). This is higher than nearby Falls Church, Virginia ($164,536).^[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. ↑ "QuickFacts: Accomack County, Virginia". United States Census Bureau. Retrieved January 25, 2024.
4. ↑ National Association of Counties. "NACo County Explorer". Retrieved January 25, 2024.
5. ↑ Loudoun Times-Mirror, "Leesburg says county should stay", September 12, 2007, Page A1
6. ↑ Johnson, Steven (December 20, 2023). "The 15 Richest Counties in the U.S." U.S. News. Retrieved August 9, 2024.