Loudoun County, Virginia Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 4th-largest in Virginia
The population of Loudoun County, Virginia is 427,082 as of the 2023 American Community Survey, making it the 4th-largest county in Virginia. The median household income is $178,707, the median home value is $701,000, and the median age is 37.8.
The population of Loudoun County has grown 40.5% since 2010 (315,486 → 443,380), a +2.46% annualized rate.
427,082
Population
+2.46%
Annual growth
828
People / sq mi
$178,707
Median Income
$701,000
Median Home Value
Loudoun County covers 516 sq mi of land at 828.1 people per square mile.
About Loudoun County, VA
Among US counties, Loudoun County stands out first on household income: a median of $178,707, above the US median of $78,538. Loudoun County is a county in Virginia with a population of 427,082. That makes it one of the ten largest counties in Virginia in the country, at #4 by population.
Income is a real outlier — the median household pulls in $178,707, putting Loudoun County near the top of US counties. Poverty is among the lowest of comparable US counties, at 2.9% — below the national 12.4%. Real estate commands a premium here — a median home value of $701,000, with typical rent around $2,317.
The population is unusually well-credentialed for US counties — 64.0% of adults have a four-year degree, above the national 35.0%. Working from home is common here: 27.5% of workers do so, above the national 14.0%, and the average commute runs about 31 minutes each way.
Taken together, the income and housing figures place Loudoun County firmly in the higher-cost, higher-earning tier of US counties — a profile that tends to track dense job markets and competitive housing.
Loudoun County Population History (2010-2024)
The county of Loudoun County had a population of 315,486 in 2010 and 443,380 in 2024, a 40.5% growth over 14 years. The peak was 443,380 in 2024. Average annual growth rate: 2.47%.
443,380
Population (2024)
315,486
Population (2010)
443,380
Peak (2024)
2.47%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 315,486 |
| 2011 | 326,357 |
| 2012 | 337,902 |
| 2013 | 350,001 |
| 2014 | 362,330 |
| 2015 | 374,176 |
| 2016 | 385,750 |
| 2017 | 397,192 |
| 2018 | 405,964 |
| 2019 | 414,872 |
| 2020 | 422,723 |
| 2021 | 428,827 |
| 2022 | 432,897 |
| 2023 | 437,164 |
| 2024 | 443,380 |
Race & Ethnicity
| White | 55.4% |
| Black or African American | 7.7% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.2% |
| Two or More Races | 0.0% |
Age & Sex
37.8
Median Age
50.0%
Female
50.0%
Male
10.4%
Age 65+
Age Distribution
Children (under 15): 22.2% · Seniors (65+): 10.4%
Income & Poverty
| Median household income | $178,707+$87,733 vs state |
| Mean household income | $209,947 |
| Per-capita income | $70,133 |
| Poverty rate | 2.9%-3.9% vs state |
| Unemployment rate | 2.4% |
| Employment-to-population | 71.3% |
Top Industries by Employment
The largest employment sector in Loudoun County is finance & real estate, accounting for 29.6% of workers.
How residents commute
1.7%
Drive alone
1.2%
Carpool
60.6%
Public transit
27.5%
Work from home
31.1 min
Avg commute
Housing
$701,000+$340,300 vs state
Median home value
$2,317
Median rent
77.9%
Homeownership rate
144,804
Total housing units
97.3%
Occupied
2.7%
Vacant
22.1%
Renter-occupied
Social & access
94.9%
With health insurance
98.9%
With broadband internet
37.3%
Foreign-born
7.3%
Veterans (18+)
6.8%
With a disability
65.9%
Speak language other than English at home
Education
94.1%
High School+
64.0%
Bachelor's+
Largest cities in Virginia
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Part of Virginia
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County rankings
Common questions about Loudoun County, VA
Frequently Asked Questions
Loudoun County, Virginia has a population of 427,082 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 4th-largest county in Virginia. Population density is 828 people per square mile.
The population of Loudoun County has grown 40.5% since 2010 (315,486 → 443,380), a +2.46% annualized rate.
The median household income in Loudoun County, Virginia is $178,707, with mean (average) household income of $209,947 and per-capita income of $70,133. 2.9% of residents live below the federal poverty level.
In Loudoun County, the largest racial and ethnic groups are White (55.4%), Black or African American (7.7%), Hispanic or Latino (1.2%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Loudoun County, Virginia is 37.8 years. Residents are 50.0% female and 50.0% male.
The median home value in Loudoun County is $701,000 and median monthly rent is $2,317. 77.9% of occupied housing units are owner-occupied. The county has 144,804 total housing units, 2.7% of which are vacant.
The largest employment sector in Loudoun County, Virginia is finance, insurance, and real estate, employing 29.6% of workers. The unemployment rate is 2.4%.
Virginia Beach is among the largest cities associated with Loudoun County, Virginia, with a population of 457,066.
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Full rankings of Virginia counties
Statewide data for Virginia
Population, race, income, age, and trends across Virginia
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.