King William County Flag

King William County

State:
Virginia
County Seat:
King William

King William County's estimated 2025 population is 20,032 with a growth rate of 2.57% in the past year according to the most recent United States census data. King William County is the 81st largest county in Virginia. The 2010 population was 15,999 and has seen a growth of 25.21% since that time.

20,032
Total Population
73
Population Density (mi²)
81
Population Rank (State)
501 2.57%
Annual Population Growth

King William County Population

King William County Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of King William County includes 78.6% White, 15.29% Black or African American, and smaller percentages for Native American, Asian, other race, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Black or African American

Two or more races

Native American

Asian

Other race

Native Hawaiian or Pacific Islander

Race
Population
Percentage (of total)
White14,33078.6%
Black or African American2,78815.29%
Two or more races8074.43%
Native American1430.78%
Asian1200.66%
Other race340.19%
Native Hawaiian or Pacific Islander100.05%

King William County Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

King William County's average per capita income is $53,855. Household income levels show a median of $85,212. The poverty rate stands at 7.9%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$115,553-
Families$99,444$111,637
Households$85,212$97,561
Non Families$40,445$50,969

$53,855

Average Income

$85,212

Median Household Income

7.9%

Poverty Rate