Onondaga County, New York
Located in New York, Onondaga County has a population of 471,129 residents and a median age of 39.6 years, making it the #153 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 13.8%. The median home value is $200,200, and the median household income is $76,945, which is 2% above the national median.
Demographics
Onondaga County has a population of 471,129, making it the #153 most populous county in the US. The median age is 39.6 years, which is 1.8% 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 Onondaga County is $76,945, ranking #729 out of 3,222 counties — 2.4% above the national median. The poverty rate is 13.8% and unemployment stands at 5.2%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Onondaga County is $200,200 (-29.0% vs national). Renters pay a median of $1,108/mo and the homeownership rate is 65.9%.
Median Home Value Trend
Rankings →Household Type
Education
In Onondaga County, 39.2% of adults age 25+ hold a bachelor's degree or higher, which is 16.4% above the national average, ranking #305 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Onondaga County is 77.7 years. 15.9% of adults report poor or fair health and 4.4% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
15.5% of adults in Onondaga County smoke , 35.1% are obese , and 22.7% report excessive drinking. The drug overdose death rate is 37.7 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Onondaga County is 6.3 per 100,000 and the suicide rate is 11.0 per 100,000. Motor vehicle deaths occur at a rate of 7.2 per 100,000.
Homicide Rate Trend
Families & Children
19.2% of children in Onondaga County live in poverty and the infant mortality rate is 5.8 per 1,000 live births. The teen birth rate is 12.4 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Onondaga County is 67.3%. The mean commute time is 22.3 min, which is 19.3% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Onondaga County voted Democratic with a margin of 17.2%. The vote was 58.6% Dem / 41.4% Rep. Compared to 2020, the margin shifted 3.4 toward Republicans .
Vote Share Over Time
About Onondaga County, New York
Onondaga County, New York has a total population of 471,129, making it the 153rd most populous county in the United States. The median age in Onondaga County is 39.6 years, which is 1.8% above the national median of 38.9 years.
The median household income in Onondaga County is $76,945, which ranks #729 of 3,222 counties nationwide. This is 2.4% above the national median of $75,149. The poverty rate is 13.8%, higher than the national rate of 12.6%. The unemployment rate stands at 5.2%.
The median home value in Onondaga County is $200,200, 29.0% below the national median. Renters in Onondaga County pay a median gross rent of $1,108 per month. The homeownership rate is 65.9%, compared to the national rate of 64.4%.
In Onondaga County, 39.2% of residents aged 25 and older hold a bachelor's degree or higher, 16.4% above the national average of 33.7%. Health insurance coverage stands at 96.7% of the population. The average commute time for workers is 22.3 min.
Onondaga County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 73.8% of the population, followed by Black (non-Hispanic) (10.2%) and Hispanic or Latino (5.9%).
All data for Onondaga County, New York 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.