Williston

County:: Barnwell County
County Seat:: No
Area (mi²):: 8.953
State:: South Carolina

Williston is a town located in Barnwell County, South Carolina. Williston has a 2025 population of 2,841. Williston is currently declining at a rate of -0.35% annually and its population has decreased by -1.7% since the most recent census, which recorded a population of 2,890 in 2020.

The average household income in Williston is $53,818 with a poverty rate of 31.09%.The median age in Williston is 45.6 years: 41.4 years for males, and 47.6 years for females.

Demographics

The racial composition of Williston includes 54.06% Black or African American, 45.56% White, and smaller percentages for Two or more races and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
Black or African American	1,559	54.06%
White	1,314	45.56%
Two or more races	11	0.38%

Williston Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Williston's average per capita income is $39,057. Household income levels show a median of $35,968. The poverty rate stands at 31.09%.

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	$114,063	-
Families	$48,182	$65,274
Households	$35,968	$53,818
Non Families	$29,500	$40,717

$39,057

Average Income

$35,968

Median Household Income

31.09%

Poverty Rate