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
Loudoun County is a county in Virginia with a population of 427,082. It ranks #4 among counties in Virginia by population. The median age is 37.8, in line with the national median. The population is 50.0% male and 50.0% female.
The median household income in Loudoun County is $178,707, above the US median of $74,580. 2.9% of residents live below the federal poverty level. Home values sit at a median of $701,000, with monthly rent averaging $2,317. The homeownership rate of 77.9% is higher than the national rate of 64.8%.
Educational attainment in Loudoun County reflects 64.0% of adults 25 and older holding a bachelor's degree or higher, above the national average of 34.3%. Roughly 27.5% of workers primarily work from home, noticeably above the national work-from-home rate of 14.2%. The average commute is 31.1 minutes each way.
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+
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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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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.