Williamson County Flag

Williamson County

State:
Tennessee
County Seat:
Franklin

Williamson County's estimated 2025 population is 271,904 with a growth rate of 1.39% in the past year according to the most recent United States census data. Williamson County is the 6th largest county in Tennessee. The 2010 population was 184,082 and has seen a growth of 47.71% since that time.

271,904
Total Population
466
Population Density (mi²)
6
Population Rank (State)
3.7K 1.39%
Annual Population Growth

Williamson County Population

Williamson County Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Williamson County includes 82.79% White, 5.22% Asian, 3.8% Black or African American, and smaller percentages for other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Asian

Black or African American

Other race

Native American

Native Hawaiian or Pacific Islander

Race
Population
Percentage (of total)
White210,78182.79%
Two or more races17,0256.69%
Asian13,2925.22%
Black or African American9,6763.8%
Other race3,3381.31%
Native American4280.17%
Native Hawaiian or Pacific Islander690.03%

Williamson County Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Williamson County's average per capita income is $75,237. Household income levels show a median of $131,202. The poverty rate stands at 4.51%.

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$168,733-
Families$153,397$202,566
Households$131,202$177,673
Non Families$64,058$86,547

$75,237

Average Income

$131,202

Median Household Income

4.51%

Poverty Rate