Sumter County, South Carolina
Located in South Carolina, Sumter County has a population of 104,725 residents and a median age of 38.0 years, making it the #598 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 16.6%. The median home value is $165,300, and the median household income is $56,693, which is 25% below the national median.
Demographics
Sumter County has a population of 104,725, making it the #598 most populous county in the US. The median age is 38.0 years, which is 2.3% below 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 Sumter County is $56,693, ranking #2,361 out of 3,222 counties — 24.6% below the national median. The poverty rate is 16.6% and unemployment stands at 6.3%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Sumter County is $165,300 (-41.4% vs national). Renters pay a median of $1,057/mo and the homeownership rate is 68.1%.
Median Home Value Trend
Rankings →Household Type
Education
In Sumter County, 23.5% of adults age 25+ hold a bachelor's degree or higher, which is 30.1% below the national average, ranking #1,422 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Sumter County is 72.1 years. 18.8% of adults report poor or fair health and 10.6% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
16.7% of adults in Sumter County smoke , 40.9% are obese , and 18.3% report excessive drinking. The drug overdose death rate is 31.7 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Sumter County is 12.5 per 100,000 and the suicide rate is 13.9 per 100,000. Motor vehicle deaths occur at a rate of 24.8 per 100,000.
Homicide Rate Trend
Families & Children
23.9% of children in Sumter County live in poverty and the infant mortality rate is 8.2 per 1,000 live births. The teen birth rate is 29.7 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Sumter County is 61.2%. The mean commute time is 25.9 min, which is 6.3% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Sumter County voted Democratic with a margin of 4.9%. The vote was 51.9% Dem / 47% Rep. Compared to 2020, the margin shifted 8.2 toward Republicans .
Vote Share Over Time
About Sumter County, South Carolina
Sumter County, South Carolina has a total population of 104,725, making it the 598th most populous county in the United States. The median age in Sumter County is 38.0 years, which is 2.3% below the national median of 38.9 years.
The median household income in Sumter County is $56,693, which ranks #2,361 of 3,222 counties nationwide. This is 24.6% below the national median of $75,149. The poverty rate is 16.6%, higher than the national rate of 12.6%. The unemployment rate stands at 6.3%.
The median home value in Sumter County is $165,300, 41.4% below the national median. Renters in Sumter County pay a median gross rent of $1,057 per month. The homeownership rate is 68.1%, compared to the national rate of 64.4%.
In Sumter County, 23.5% of residents aged 25 and older hold a bachelor's degree or higher, 30.1% below the national average of 33.7%. Health insurance coverage stands at 89.5% of the population. The average commute time for workers is 25.9 min.
Sumter County is a diverse community. The largest racial or ethnic group is Black (non-Hispanic) at 45.8% of the population, followed by White (non-Hispanic) (43.6%) and Hispanic or Latino (4.4%).
All data for Sumter 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.