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, Native American, Asian, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

Black or African American

White

Two or more races

Native American

Asian

Native Hawaiian or Pacific Islander

Other 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%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

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