DeKalb County, Missouri
Located in Missouri, DeKalb County has a population of 10,876 residents and a median age of 42.2 years, making it the #2,425 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 8.7%. The median home value is $169,200, and the median household income is $69,826, which is 7% below the national median.
Demographics
DeKalb County has a population of 10,876, making it the #2,425 most populous county in the US. The median age is 42.2 years, which is 8.5% 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 DeKalb County is $69,826, ranking #1,207 out of 3,222 counties — 7.1% below the national median. The poverty rate is 8.7% and unemployment stands at 2.3%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in DeKalb County is $169,200 (-40.0% vs national). Renters pay a median of $817/mo and the homeownership rate is 71.1%.
Median Home Value Trend
Rankings →Household Type
Education
In DeKalb County, 16.4% of adults age 25+ hold a bachelor's degree or higher, which is 51.5% below the national average, ranking #2,606 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in DeKalb County is 75.7 years. 19.1% of adults report poor or fair health and 10.3% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
19.7% of adults in DeKalb County smoke , 42.3% are obese , and 21.5% report excessive drinking.
Adult Smoking Trend
Safety
The suicide rate is 24.4 per 100,000. Motor vehicle deaths occur at a rate of 20.3 per 100,000.
Suicide Rate Trend
Families & Children
12.4% of children in DeKalb County live in poverty . The teen birth rate is 18.4 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in DeKalb County is 49.5%. The mean commute time is 31.8 min, which is 15.4% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, DeKalb County voted Republican with a margin of 62.6%. The vote was 18.1% Dem / 80.7% Rep. Compared to 2020, the margin shifted 2.8 toward Republicans .
Vote Share Over Time
About DeKalb County, Missouri
DeKalb County, Missouri has a total population of 10,876, making it the 2,425th most populous county in the United States. The median age in DeKalb County is 42.2 years, which is 8.5% above the national median of 38.9 years.
The median household income in DeKalb County is $69,826, which ranks #1,207 of 3,222 counties nationwide. This is 7.1% below the national median of $75,149. The poverty rate is 8.7%, lower than the national rate of 12.6%. The unemployment rate stands at 2.3%.
The median home value in DeKalb County is $169,200, 40.0% below the national median. Renters in DeKalb County pay a median gross rent of $817 per month. The homeownership rate is 71.1%, compared to the national rate of 64.4%.
In DeKalb County, 16.4% of residents aged 25 and older hold a bachelor's degree or higher, 51.5% below the national average of 33.7%. Health insurance coverage stands at 93.3% of the population. The average commute time for workers is 31.8 min.
DeKalb County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 87.0% of the population, followed by Black (non-Hispanic) (6.5%) and Two or More Races (3.1%).
All data for DeKalb County, Missouri 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.