Loudoun County | |
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Motto: "I Byde My Time"[1] | |
Coordinates: 39°05′N 77°38′W / 39.09°N 77.64°W | |
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 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]
Principal cities (and city-like entities) |
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Counties (and county equivalents) |
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See Also |
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The District of Columbia itself, and Virginia's incorporated cities, are county equivalents. Virginia's incorporated cities are listed under their surrounding county. The incorporated cities bordering more than one county (Alexandria, Falls Church and Fredericksburg) are listed under the county they were part of before incorporation as a city. Some unincorporated areas and census-designated places like Silver Spring and Bethesda in Maryland, Reston in Virginia, as well as the County of Arlington in Virginia are also treated as city-like entities (or principal cities) even though they have not been legally incorporated as such. |
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