Total Population in Loudoun County, VA
ACS 2024 5-Year Estimates
432,998
Rank #167/3,222 · #4 in VA
95th
Loudoun 432,998
VA 8,705,170 -95.0%
US 330M
Total Population Trend
Rankings →Percentile Rank Over Time
Year-over-Year Population Change
National Distribution
How Loudoun County's total population of 432,998 compares to all 3,222 U.S. counties. Values range from 33 to 9,808,667.
Distribution of Total Population Across All Counties
Ranking Context
Counties ranked closest to Loudoun County for total population.
Nearby Rankings
Full ranking →| #164 | Santa Barbara County, CA | 443,701 |
| #165 | Monterey County, CA | 437,613 |
| #166 | Berks County, PA | 433,015 |
| #167 | Loudoun County, VA | 432,998 |
| #168 | Jefferson Parish, LA | 430,920 |
| #169 | Manatee County, FL | 429,792 |
| #170 | Lucas County, OH | 428,018 |
About Total Population
Loudoun County, Virginia has a total population of 432,998, ranking #167 of 3,222 counties nationwide — 99.9% below the national value of 330M. Within Virginia, it ranks #4 of 133. This places it in the 95th percentile nationally.
Total population count from the American Community Survey. Source: U.S. Census Bureau, American Community Survey 2024 5-Year Estimates. All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.