Loudoun County's 2026 population is estimated at 455,812, reflecting a 1.38% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Loudoun County is the 4th largest county in Virginia. The 2010 population was 315,486 and has grown 44.48% since 2010.
Data after 2023 is projected based on recent change
Overall: 38.2 years
Female: 38.4 years
Male: 38 years
There are 317,827 adults, (46,894 of whom are seniors) in Loudoun County.
Female: 216,221 (49.9%)
Male: 216,777 (50.1%)
The racial composition of Loudoun County includes 52.73% White, 21.83% Asian, 7.72% Black or African American, 4.8% other race, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 228,302 | 52.73% |
| Asian | 94,508 | 21.83% |
| Two or more races | 54,499 | 12.59% |
| Black or African American | 33,411 | 7.72% |
| Other race | 20,804 | 4.8% |
| Native American | 1,253 | 0.29% |
| Native Hawaiian or Pacific Islander | 221 | 0.05% |
Loudoun County 's average per capita income is $97,873. Household income levels show a median of $181,765. The poverty rate stands at 4.23%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $221,884 | $253,740 |
| Families | $203,933 | $234,771 |
| Households | $181,765 | $214,791 |
| Non Families | $104,262 | $131,907 |
Average Income
Median Household Income
Poverty Rate
