Jo Daviess County, Illinois
Located in Illinois, Jo Daviess County has a population of 21,851 residents and a median age of 51.5 years, making it the #1,781 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 7.8%. The median home value is $209,900, and the median household income is $73,993, which is 2% below the national median.
Demographics
Jo Daviess County has a population of 21,851, making it the #1,781 most populous county in the US. The median age is 51.5 years, which is 32.4% 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 Jo Daviess County is $73,993, ranking #916 out of 3,222 counties — 1.5% below the national median. The poverty rate is 7.8% and unemployment stands at 3.6%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Jo Daviess County is $209,900 (-25.5% vs national). Renters pay a median of $825/mo and the homeownership rate is 80.4%.
Median Home Value Trend
Rankings →Household Type
Education
In Jo Daviess County, 28.9% of adults age 25+ hold a bachelor's degree or higher, which is 14.2% below the national average, ranking #841 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Jo Daviess County is 79.9 years. 14.5% of adults report poor or fair health and 7.2% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
14.2% of adults in Jo Daviess County smoke , 34.2% are obese , and 22.8% report excessive drinking.
Adult Smoking Trend
Safety
The suicide rate is 16.0 per 100,000. Motor vehicle deaths occur at a rate of 14.6 per 100,000.
Suicide Rate Trend
Families & Children
11.1% of children in Jo Daviess County live in poverty . The teen birth rate is 8.4 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Jo Daviess County is 73.0%. The mean commute time is 23.8 min, which is 13.7% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Jo Daviess County voted Republican with a margin of 16.8%. The vote was 40.8% Dem / 57.6% Rep. Compared to 2020, the margin shifted 0.3 toward Republicans .
Vote Share Over Time
About Jo Daviess County, Illinois
Jo Daviess County, Illinois has a total population of 21,851, making it the 1,781st most populous county in the United States. The median age in Jo Daviess County is 51.5 years, which is 32.4% above the national median of 38.9 years.
The median household income in Jo Daviess County is $73,993, which ranks #916 of 3,222 counties nationwide. This is 1.5% below the national median of $75,149. The poverty rate is 7.8%, lower than the national rate of 12.6%. The unemployment rate stands at 3.6%.
The median home value in Jo Daviess County is $209,900, 25.5% below the national median. Renters in Jo Daviess County pay a median gross rent of $825 per month. The homeownership rate is 80.4%, compared to the national rate of 64.4%.
In Jo Daviess County, 28.9% of residents aged 25 and older hold a bachelor's degree or higher, 14.2% below the national average of 33.7%. Health insurance coverage stands at 95.3% of the population. The average commute time for workers is 23.8 min.
Jo Daviess County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 91.9% of the population, followed by Hispanic or Latino (4.2%) and Two or More Races (2.2%).
All data for Jo Daviess County, Illinois 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.