Demographic Characteristics 

American Community Survey (Annual Data)

The U.S. Census Bureau's American Community Survey (ACS) provides annual demographic data including educational attainment, foreign born population, language spoken at home, household income, and housing characteristics.

When using the American Community Survey's data, it is best to use percentages rather than report actual numbers because the ACS is a survey of a small subset of the county's population. More ACS data can be found by going to the Census Bureau's American FactFinder.

Loudoun County Analyses

Census Bureau Demographic Profiles, ACS One-Year Estimates

Census Bureau Demographic Profiles, ACS Five-Year Estimates

  • Available for County sub-geographies
  • Use for increased statistical reliability

Loudoun County

Election Districts


2010 Decennial Census

The U.S. Census Bureau's Decennial Census is conducted every ten years and surveys 100% of the county's population.

Loudoun County Analysis

Census Bureau Demographic Profiles

Other Demographics

Reference Maps