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Where am ILOCATED

Loudoun County, Virginia

Loudoun County, Virginia, has 449,749 residents (July 2025 estimate). Its county seat is Leesburg. It uses Eastern Time and covers 516 sq mi (1,336 km²) of land.

Virginia BeachArlington
Loudoun County in Virginia
Montgomery CountyClarke CountyJefferson CountyLeesburgAshburnSouth RidingHerndon
Loudoun County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
449,749
Land area
516 sq mi (1,336 km²)
County seat or government
Leesburg
Time zone
Eastern TimeUTC-05:00 in January; UTC-04:00 in July
Median household income
$181,765 ± $3,438
Median home value
$743,800 ± $9,036
Median rent, with utilities
$2,386 ± $44
Homes lived in by their owners
77.9% ± 0.8 points
County type
County
Metro or micro area
Washington-Arlington-Alexandria, DC-VA-MD-WV metro areaCentral county
Water area
5.59 sq mi (14.5 km²)
State
Virginia
County code (FIPS)
51107
Coordinates (central point)
39.081200, -77.638898
Open this point in the location finder

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Loudoun County

Time zoneLocal time and UTC offsetNext clock change
Eastern TimeAmerica/New_YorkUTC-05:00 in January; UTC-04:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 2014767,692 people
  2. 2014864,021 people
  3. 2017651,471 people
  4. 2016443,436 people
  5. 2012042,896 people
  6. 2010537,639 people
  7. 2015236,674 people
  8. 2017534,733 people
  9. 2016534,088 people
  10. 2013219,817 people
  11. 2206617,185 people
  12. 2016614,949 people
All 21
  1. 201418,359 people
  2. 201807,531 people
  3. 201584,979 people
  4. 201353,585 people
  5. 201172,790 people
  6. 201971,825 people
  7. 20184635 people
  8. 20129538 people
  9. 20130271 people

21 ZIP Code areas overlap Loudoun County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Magisterial districts in Loudoun County, largest first

  1. Blue Ridge District93,941 people
  2. Dulles District66,173 people
  3. Broad Run District54,131 people
  4. Leesburg District44,440 people
  5. Catoctin District44,431 people
  6. Sterling District43,749 people
  7. Ashburn District43,258 people
  8. Algonkian District42,875 people

People counts are American Community Survey 2020–2024 5-year estimates. All magisterial districts in Virginia, by county

School districts in Loudoun County, largest first

  1. Loudoun County Public Schools432,998 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Leesburg, Virginia (town)49,171 people
  2. Ashburn, Virginia (CDP)46,026 people
  3. South Riding, Virginia (CDP)34,352 people
  4. Sterling, Virginia (CDP)32,411 people
  5. Herndon, Virginia (town)24,672 people
  6. Brambleton, Virginia (CDP)24,537 people
  7. Stone Ridge, Virginia (CDP)16,603 people
  8. Broadlands, Virginia (CDP)14,353 people
  9. Sugarland Run, Virginia (CDP)12,629 people
  10. Cascades, Virginia (CDP)12,357 people
  11. Lansdowne, Virginia (CDP)12,328 people
  12. Lowes Island, Virginia (CDP)11,018 people
All 31
  1. Loudoun Valley Estates, Virginia (CDP)10,271 people
  2. Belmont, Virginia (CDP)9,729 people
  3. Countryside, Virginia (CDP)9,661 people
  4. Purcellville, Virginia (town)8,973 people
  5. Moorefield, Virginia (CDP)6,123 people
  6. Dulles Town Center, Virginia (CDP)5,464 people
  7. University Center, Virginia (CDP)3,923 people
  8. Arcola, Virginia (CDP)3,509 people
  9. One Loudoun, Virginia (CDP)3,309 people
  10. Lovettsville, Virginia (town)2,719 people
  11. Goose Creek Village, Virginia (CDP)2,461 people
  12. Oak Grove, Virginia (CDP)2,408 people
  13. Kincora, Virginia (CDP)1,008 people
  14. Middleburg, Virginia (town)774 people
  15. Round Hill, Virginia (town)678 people
  16. Hamilton, Virginia (town)589 people
  17. Waterford, Virginia (CDP)220 people
  18. Aldie, Virginia (CDP)163 people

See all 31 cities, towns and communities in Loudoun County, largest first

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Clarke County, Virginia19 mi west
  2. Jefferson County, West Virginia20 mi northwest
  3. Montgomery County, Maryland24 mi east
  4. Fauquier County, Virginia25 mi southwest
  5. Fairfax County, Virginia26 mi southeast
  6. Prince William County, Virginia28 mi south
  7. Frederick County, Maryland30 mi northeast
  8. Washington County, Maryland37 mi north

Before using this answer on a form

Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.

Find the county where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.