County · Virginia
Loudoun County, Virginia
Loudoun County, Virginia. Loudoun County had 449,749 residents in 2025 by the Census Bureau's estimate, up 6.8% since 2020, faster than Virginia (+2.9%). It holds 31 places (8 cities, villages and boroughs and 23 census-designated) and 75 census tracts. GEOID 51107.
Loudoun County is one of the 23 counties of the Washington-Arlington-Alexandria, DC-VA-MD-WV metropolitan statistical area (the Census Bureau's July 2023 delineation).
Residents, July 2025 estimate
449,749
Census Bureau estimate (no margin published)
2020 Census count: 420,959 · ACS 2020-2024: 432,998
Median household income
$181,765
±$3,438 (90% margin)
Virginia: $93,170
Median home value
$743,800
±$9,036 (90% margin)
Virginia: $383,700
Median gross rent
$2,386
±$44 (90% margin)
Virginia: $1,579
How many people live in Loudoun County, and is it growing?
The 2020 Census counted 420,959 residents in Loudoun County. The Census Bureau estimates 449,749 for July 1, 2025, up 6.8% since 2020, faster than Virginia (+2.9%). The 2020-2024 American Community Survey puts the population at 432,998 over 516 square miles of land.
| Measure | Loudoun County | Virginia | Change since 2015-2019 |
|---|---|---|---|
| Total population | 432,998 | 8,705,170 | +37,864 |
| Households | 143,032±544 | 3,365,732 | +14,395 |
| Average household size | 3.02±0.01 | 2.52 | −0.04 |
| Housing units | 147,003±96 | 3,684,756 | +13,940 |
Loudoun County's population since 2000
From 169,599 in 2000 to 449,749 in 2025: up 165.2%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov
What cities and towns are in Loudoun County?
Loudoun County holds 31 places: 8 cities, villages and boroughs (incorporated places) and 23 census-designated places. The largest is Leesburg with 49,917 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| Leesburg | 48,250 | $145,205 |
|---|---|---|
| Ashburn | 46,349 | $154,978 |
| South Riding | 33,877 | $196,403 |
| Sterling | 30,337 | $123,303 |
| Brambleton | 23,486 | $238,018 |
| Stone Ridge | 15,039 | $187,563 |
| Broadlands | 14,021 | $241,042 |
| Lansdowne | 12,427 | $168,731 |
| Cascades | 12,366 | $167,171 |
| Sugarland Run | 12,345 | $166,385 |
| Loudoun Valley Estates | 11,436 | $224,704 |
| Lowes Island | 11,023 | $220,833 |
| Countryside | 10,418 | $148,810 |
| Belmont | 10,268 | $242,542 |
| Purcellville | 8,929 | $165,121 |
| Dulles Town Center | 5,909 | $125,941 |
| Moorefield | 4,421 | $205,257 |
| University Center | 3,969 | $120,533 |
| Lovettsville | 2,694 | $141,406 |
| Oak Grove | 2,452 | $174,423 |
| Arcola | 2,412 | $129,116 |
| Goose Creek Village | 2,298 | $198,631 |
| One Loudoun | 2,285 | $241,250 |
| Round Hill | 693 | $127,266 |
| Middleburg | 669 | $104,545 |
| Hamilton | 619 | $141,250 |
| Kincora | 367 | $134,279 |
| WaterfordGEOID 5183440 | 181 | not published |
| HillsboroGEOID 5137288 | 114 | $97,438 |
| Aldie | 70 | not published |
| Herndon | 24,655 | $148,000 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov
Who lives in Loudoun County?
The median resident of Loudoun County is 38.2 years old; 26.6% are under 18 and 10.8% are 65 or older. The largest group is non-Hispanic white residents at 51.0%, then non-Hispanic Asian residents at 21.7%. 27.4% of residents were born outside the United States.
| Measure | Loudoun County | Virginia | Change since 2015-2019 |
|---|---|---|---|
| Median age | 38.2±0.2 | 39.0 | +2.0 |
| Under 18 years | 26.6% | 21.7% | – |
| 65 years and over | 10.8%±0.1 pts | 16.7% | – |
| Hispanic or Latino (any race) | 14.3% | 11.0% | +0.7 pts |
| White alone, not Hispanic | 51.0%±0.1 pts | 58.4% | −5.1 pts |
| Black or African American alone, not Hispanic | 7.5%±0.2 pts | 18.3% | no clear change |
| Asian alone, not Hispanic | 21.7%±0.3 pts | 6.9% | +3.2 pts |
| American Indian and Alaska Native alone, not Hispanic | 0.1%±0.1 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.1 pts | 0.1% | – |
| Two or more races, not Hispanic | 4.6%±0.4 pts | 4.7% | – |
| Some other race alone, not Hispanic | 0.8%±0.2 pts | 0.6% | – |
| Born outside the United States | 27.4%±0.7 pts | 13.1% | +2.9 pts |
| Speak a language other than English at home (age 5+) | 34.9%±0.7 pts | 17.4% | – |
| Civilian veterans (age 18+) | 7.0%±0.4 pts | 9.4% | – |
| With a disability | 7.1%±0.4 pts | 12.5% | – |
| No health insurance coverage | 5.4%±0.4 pts | 6.9% | no clear change |
| High school graduate or higher (age 25+) | 93.9%±0.4 pts | 91.6% | – |
| Bachelor's degree or higher (age 25+) | 64.6%±0.8 pts | 42.2% | +3.3 pts |
| Graduate or professional degree (age 25+) | 28.6%±0.7 pts | 18.5% | – |
| Moved from another state in the past year | 2.5%±0.3 pts | 3.1% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Loudoun County earn?
Half of Loudoun County's 143,032 households earn less than $181,765 a year (±$3,438), against $93,170 in Virginia. In 2015-2019 the median was $175,127 in 2024 dollars, so it rose by $6,638 after inflation. 4.2% of residents live below the poverty line.
| Measure | Loudoun County | Virginia | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $181,765±$3,438 | $93,170 | +$6,638 |
| Mean household income | $214,791±$3,631 | $128,260 | – |
| Per capita income | $71,986±$1,064 | $50,666 | +$3,382 |
| People below the poverty line | 4.2%±0.4 pts | 9.9% | +0.8 pts |
| Children under 18 below the poverty line | 4.4%±0.8 pts | 12.3% | +1.2 pts |
| Households receiving SNAP | 3.2%±0.4 pts | 9.1% | – |
| Households with a broadband subscription | 97.0%±0.4 pts | 91.0% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Loudoun County?
Owners occupy 77.9% of Loudoun County's occupied homes and renters 22.1%. The median owner-occupied home is valued at $743,800 by its owner (±$9,036). The median renter pays $2,386 a month including utilities, and 37.3% of renters pay 35% or more of their income on rent.
| Measure | Loudoun County | Virginia | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $743,800±$9,036 | $383,700 | +$118,484 |
| Median gross rent | $2,386±$44 | $1,579 | +$85 |
| Renters paying 35% or more of income on rent | 37.3%±2.5 pts | 39.4% | no clear change |
| Median monthly owner costs, with a mortgage | $3,270±$32 | $2,127 | – |
| Owner-occupied homes | 77.9%±0.8 pts | 67.3% | no clear change |
| Housing units | 147,003±96 | 3,684,756 | +13,940 |
| Homeowner vacancy rate | 0.2%±0.2 pts | 0.8% | – |
| Rental vacancy rate | 3.9%±1.0 pts | 4.8% | – |
| Single-family detached homes | 51.4%±0.8 pts | 61.3% | – |
| Mobile homes | 0.5%±0.2 pts | 4.3% | – |
| Built 2020 or later | 2.8%±0.3 pts | 1.7% | – |
| Built 1939 or earlier | 2.3%±0.2 pts | 7.0% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Loudoun County building?
Builders took permits for 1,561 new housing units across Loudoun County in 2025 (641 single-family), 3.5 per 1,000 residents.
Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Loudoun County get to work?
57.5% of Loudoun County's workers drive alone and 31.2% work from home. The average trip to work takes 30.1 minutes. The unemployment rate in 2020-2024 averaged 3.3%.
| Measure | Loudoun County | Virginia | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 74.0%±0.6 pts | 65.4% | – |
| Unemployment rate | 3.3%±0.3 pts | 4.3% | no clear change |
| Drove alone to work | 57.5%±1.1 pts | 67.6% | – |
| Carpooled | 7.4%±0.5 pts | 8.0% | – |
| Public transportation | 1.4%±0.2 pts | 2.3% | – |
| Walked | 1.2%±0.2 pts | 2.1% | – |
| Worked from home | 31.2%±0.9 pts | 18.3% | +23.3 pts |
| Mean travel time to work | 30.1 min±0.5 | 27.3 min | −4.4 min |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What are Loudoun County's census tracts?
Loudoun County is divided into 75 census tracts. Among those with a reliable estimate, median household income runs from $79,583 (Tract 6110.10) to $250,000 or more (Tract 6119.02).
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Loudoun County compare with Virginia's other counties?
| Measure | Rank |
|---|---|
| Population | 4th of 133 |
| Growth 2020-2025 | 21st of 133 |
| Residents per square mile | 39th of 133 |
| Median household income | 1st of 133 |
| Median home value | 3rd of 133 |
| Median gross rent | 1st of 133 |
| Poverty rate | 132nd of 133 |
| Bachelor's degree or higher | 5th of 133 |
| Median age | 102nd of 133 |
Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Loudoun County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.