Lincoln County, South Dakota
Located in South Dakota, Lincoln County has a population of 70,638 residents and a median age of 35.9 years, making it the #784 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 5.6%. The median home value is $348,300, and the median household income is $99,166, which is 32% above the national median.
Demographics
Lincoln County has a population of 70,638, making it the #784 most populous county in the US. The median age is 35.9 years, which is 7.7% 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 Lincoln County is $99,166, ranking #178 out of 3,222 counties — 32.0% above the national median. The poverty rate is 5.6% and unemployment stands at 1.7%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Lincoln County is $348,300 (+23.6% vs national). Renters pay a median of $1,260/mo and the homeownership rate is 71.2%.
Median Home Value Trend
Rankings →Household Type
Education
In Lincoln County, 44.4% of adults age 25+ hold a bachelor's degree or higher, which is 31.9% above the national average, ranking #179 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Lincoln County is 83.8 years. 9.8% of adults report poor or fair health and 6.6% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
10.1% of adults in Lincoln County smoke , 32.6% are obese , and 23.2% report excessive drinking. The drug overdose death rate is 7.4 per 100,000.
Adult Smoking Trend
Safety
The suicide rate is 13.4 per 100,000. Motor vehicle deaths occur at a rate of 7.6 per 100,000.
Suicide Rate Trend
Families & Children
3.8% of children in Lincoln County live in poverty and the infant mortality rate is 4.6 per 1,000 live births. The teen birth rate is 7.1 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Lincoln County is 78.9%. The mean commute time is 21.1 min, which is 23.5% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Lincoln County voted Republican with a margin of 26.5%. The vote was 35.7% Dem / 62.2% Rep. Compared to 2020, the margin shifted 2.9 toward Republicans .
Vote Share Over Time
About Lincoln County, South Dakota
Lincoln County, South Dakota has a total population of 70,638, making it the 784th most populous county in the United States. The median age in Lincoln County is 35.9 years, which is 7.7% below the national median of 38.9 years.
The median household income in Lincoln County is $99,166, which ranks #178 of 3,222 counties nationwide. This is 32.0% above the national median of $75,149. The poverty rate is 5.6%, lower than the national rate of 12.6%. The unemployment rate stands at 1.7%.
The median home value in Lincoln County is $348,300, 23.6% above the national median. Renters in Lincoln County pay a median gross rent of $1,260 per month. The homeownership rate is 71.2%, compared to the national rate of 64.4%.
In Lincoln County, 44.4% of residents aged 25 and older hold a bachelor's degree or higher, 31.9% above the national average of 33.7%. Health insurance coverage stands at 95.9% of the population. The average commute time for workers is 21.1 min.
Lincoln County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 89.0% of the population, followed by Hispanic or Latino (3.2%) and Two or More Races (3.0%).
All data for Lincoln County, South Dakota 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.