Colleton County, South Carolina
Located in South Carolina, Colleton County has a population of 38,783 residents and a median age of 42.0 years, making it the #1,233 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 19.6%. The median home value is $162,500, and the median household income is $51,114, which is 32% below the national median.
Demographics
Colleton County has a population of 38,783, making it the #1,233 most populous county in the US. The median age is 42.0 years, which is 8.0% above the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Geographic Mobility (Past Year)
Economy
The median household income in Colleton County is $51,114, ranking #2,712 out of 3,222 counties — 32.0% below the national median. The poverty rate is 19.6% and unemployment stands at 9.8%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Colleton County is $162,500 (-42.4% vs national). Renters pay a median of $949/mo and the homeownership rate is 73.3%.
Median Home Value Trend
Rankings →Household Type
Education
In Colleton County, 17.4% of adults age 25+ hold a bachelor's degree or higher, which is 48.3% below the national average, ranking #2,439 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Colleton County is 68.6 years. 22.3% of adults report poor or fair health and 13.5% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
21.3% of adults in Colleton County smoke , 44.8% are obese , and 17.8% report excessive drinking. The drug overdose death rate is 32.3 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Colleton County is 26.8 per 100,000 and the suicide rate is 20.6 per 100,000. Motor vehicle deaths occur at a rate of 47.9 per 100,000.
Homicide Rate Trend
Families & Children
33.6% of children in Colleton County live in poverty and the infant mortality rate is 9.3 per 1,000 live births. The teen birth rate is 36.2 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Colleton County is 67.2%. The mean commute time is 38.9 min, which is 41.1% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Colleton County voted Republican with a margin of 18.1%. The vote was 40.4% Dem / 58.5% Rep. Compared to 2020, the margin shifted 8.6 toward Republicans .
Vote Share Over Time
About Colleton County, South Carolina
Colleton County, South Carolina has a total population of 38,783, making it the 1,233rd most populous county in the United States. The median age in Colleton County is 42.0 years, which is 8.0% above the national median of 38.9 years.
The median household income in Colleton County is $51,114, which ranks #2,712 of 3,222 counties nationwide. This is 32.0% below the national median of $75,149. The poverty rate is 19.6%, higher than the national rate of 12.6%. The unemployment rate stands at 9.8%.
The median home value in Colleton County is $162,500, 42.4% below the national median. Renters in Colleton County pay a median gross rent of $949 per month. The homeownership rate is 73.3%, compared to the national rate of 64.4%.
In Colleton County, 17.4% of residents aged 25 and older hold a bachelor's degree or higher, 48.3% below the national average of 33.7%. Health insurance coverage stands at 85.0% of the population. The average commute time for workers is 38.9 min.
Colleton County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 56.5% of the population, followed by Black (non-Hispanic) (33.6%) and Hispanic or Latino (4.6%).
All data for Colleton County, South Carolina comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.