Data / Population / King William County

Population in King William County

Population in King William County was 19,617 in 2025, according to the U.S. Census Bureau. That is up 1.8% from 2024. That is the 82nd highest of 133 counties in 2025.

Compared with Virginia and United States

Rankings

• Countries by population 215 places
• EU countries by population 27 places
• US states by population 51 places
• Counties in Virginia by population 133 places

Definition

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (Padrón). United States: Census Bureau population estimates for 1 July. Other countries and the World: World Bank mid-year estimates, which count all residents regardless of legal status or citizenship.

For Denmark, Statistics Denmark counts the registered resident population on 1 January. Greenland and the Faroe Islands are excluded. The annual series selects the first-quarter reference date from FOLK1A. The World Bank series exists for every country, so use it (through compare) to rank countries on one basis.

How to cite

U.S. Census Bureau. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-08.

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More statistics for King William County

• Asian population share
• Bachelor's degree or higher, population 25 and over
• Live births, July to June
• Black or African American population share
• Crude birth rate, July to June
• Crude death rate, July to June
• Deaths, July to June
• Foreign-born population share
• Real GDP growth
• GDP per capita, US dollars
• Gross domestic product (GDP), US dollars
• Hispanic or Latino population share
• Homeownership rate (US, housing units)
• Median age
• Median gross rent (monthly)
• Median home value
• Median household income
• Population aged 65 and over
• Population density
• Poverty rate (US official measure)
• Unemployment rate
• White (non-Hispanic) population share

All statistics for King William County