How many people live in Loudoun County, VA?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 443,400 people living in Loudoun County, VA. That makes Loudoun County the fourth-most populous county in Virginia. It is home to 5% of people living in the state.
443K
population of Loudoun County, VA (2024)
5%
County share of the Virginia population (2024)
About 443,400 people lived in Loudoun County, VA in 2024.
Population estimates, 2000–2024
What are Loudoun County, VA’s age demographics?
About 52,500 Loudoun County residents are aged 65 and older in 2024. That represents 11.9% of its population. For comparison, the age group represents 17.8% of Virginia’s population and 18% in the US overall.
Another 113,300 Loudoun County residents, or 25.6% of the population, were children under 18. For comparison, the age group represents 21.6% of Virginia’s population and 21.6% in the US overall.
A lower share of Loudoun County, VA's population is aged 65 or older than the US as a whole.
Population estimates by age group, (2024)
What are Loudoun County, VA’s racial and ethnic demographics?
Non-Hispanic Asian residents make up 23.5% of the Loudoun County, VA population, higher than the national share of 6.5%. Loudoun County, VA also has a larger share of people identifying as non-Hispanic two or more races (3.8%) than the US overall (2.5%).
In contrast, Loudoun County’s non-Hispanic white population accounts for 50.4%, below the 57.5% nationwide, and the Hispanic population makes up 14.4% of the county, compared with 20% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
Loudoun County, VA has a higher share of a non-Hispanic Asian population than Virginia as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Loudoun County, VA is Leesburg with about 49,800 residents in 2024.
Cities and towns in Loudoun County, VA ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Leesburg | 49,831 |
| 2. | Purcellville | 8,965 |
| 3. | Lovettsville | 2,719 |
| 4. | Middleburg | 696 |
| 5. | Round Hill | 687 |
| 6. | Hamilton | 607 |
| 7. | Hillsboro | 110 |
| 8. | Herndon (pt.) | |
| 9. | Balance of Loudoun County | 379,765 |
Keep exploring
Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
