Delaware County, Ohio
Located in Ohio, Delaware County has a population of 226,834 residents and a median age of 40.1 years, making it the #315 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 4.7%. The median home value is $445,500, and the median household income is $133,540, which is 78% above the national median.
Demographics
Delaware County has a population of 226,834, making it the #315 most populous county in the US. The median age is 40.1 years, which is 3.1% 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 Delaware County is $133,540, ranking #23 out of 3,222 counties — 77.7% above the national median. The poverty rate is 4.7% and unemployment stands at 3.0%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Delaware County is $445,500 (+58.0% vs national). Renters pay a median of $1,492/mo and the homeownership rate is 78.5%.
Median Home Value Trend
Rankings →Household Type
Education
In Delaware County, 59.4% of adults age 25+ hold a bachelor's degree or higher, which is 76.4% above the national average, ranking #28 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Delaware County is 81.1 years. 11.9% of adults report poor or fair health and 4.0% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
12.3% of adults in Delaware County smoke , 32.2% are obese , and 20.7% report excessive drinking. The drug overdose death rate is 15.9 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Delaware County is 0.9 per 100,000 and the suicide rate is 11.3 per 100,000. Motor vehicle deaths occur at a rate of 5.6 per 100,000.
Homicide Rate Trend
Families & Children
5.5% of children in Delaware County live in poverty and the infant mortality rate is 3.5 per 1,000 live births. The teen birth rate is 3.5 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Delaware County is 87.6%. The mean commute time is 27.9 min, which is 1.0% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Delaware County voted Republican with a margin of 6.6%. The vote was 46.2% Dem / 52.8% Rep. Compared to 2020, the margin shifted +0.2 toward Democrats .
Vote Share Over Time
About Delaware County, Ohio
Delaware County, Ohio has a total population of 226,834, making it the 315th most populous county in the United States. The median age in Delaware County is 40.1 years, which is 3.1% above the national median of 38.9 years.
The median household income in Delaware County is $133,540, which ranks #23 of 3,222 counties nationwide. This is 77.7% above the national median of $75,149. The poverty rate is 4.7%, lower than the national rate of 12.6%. The unemployment rate stands at 3.0%.
The median home value in Delaware County is $445,500, 58.0% above the national median. Renters in Delaware County pay a median gross rent of $1,492 per month. The homeownership rate is 78.5%, compared to the national rate of 64.4%.
In Delaware County, 59.4% of residents aged 25 and older hold a bachelor's degree or higher, 76.4% above the national average of 33.7%. Health insurance coverage stands at 95.3% of the population. The average commute time for workers is 27.9 min.
Delaware County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 79.2% of the population, followed by Asian (non-Hispanic) (8.6%) and Black (non-Hispanic) (4.3%).
All data for Delaware County, Ohio 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.