Blenheim Flag

Blenheim

County:
Marlboro County
County Seat:
No
Area (mi²):
0.653

Blenheim is a town located in Marlboro County, South Carolina. Blenheim has a 2025 population of 105 . Blenheim is currently declining at a rate of -1.87% annually and its population has decreased by -7.08% since the most recent census, which recorded a population of 113 in 2020.

The average household income in Blenheim is $64,627 with a poverty rate of 11.63%. The median age in Blenheim is 35.2 years: 30.6 years for males, and 35.8 years for females. For every 100 females there are 84.0 males.

105
Total Population
161
Density (mi²)
-2 -1.87%
Growth

Blenheim Population

Blenheim Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Blenheim includes 76.09% White, 13.04% Native American, 8.7% Black or African American, and smaller percentages for Two or more races and multiracial populations.

Population by Race

White (76.09%)

Native American (13.04%)

Black or African American (8.7%)

Two or more races (2.17%)

Race
Population
Percentage (of total)
White3576.09%
Native American613.04%
Black or African American48.7%
Two or more races12.17%

Blenheim Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Blenheim's average per capita income is $35,000. Household income levels show a median of $66,667. The poverty rate stands at 11.63%.

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
Families$93,438$89,293
Households$66,667$64,627
Married Families--
Non Families-$21,463

$35,000

Average Income

$66,667

Median Household Income

11.63%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)