Seneca County, New York
Located in New York, Seneca County has a population of 32,920 residents and a median age of 43.0 years, making it the #1,400 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 13.5%. The median home value is $155,400, and the median household income is $68,089, which is 9% below the national median.
Demographics
Seneca County has a population of 32,920, making it the #1,400 most populous county in the US. The median age is 43.0 years, which is 10.5% 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 Seneca County is $68,089, ranking #1,335 out of 3,222 counties — 9.4% below the national median. The poverty rate is 13.5% and unemployment stands at 4.5%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Seneca County is $155,400 (-44.9% vs national). Renters pay a median of $957/mo and the homeownership rate is 71.0%.
Median Home Value Trend
Rankings →Household Type
Education
In Seneca County, 25.2% of adults age 25+ hold a bachelor's degree or higher, which is 25.1% below the national average, ranking #1,196 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Seneca County is 77.6 years. 16.0% of adults report poor or fair health and 6.0% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
16.3% of adults in Seneca County smoke , 37.4% are obese , and 22.2% report excessive drinking. The drug overdose death rate is 18.9 per 100,000.
Adult Smoking Trend
Safety
The suicide rate is 12.4 per 100,000. Motor vehicle deaths occur at a rate of 8.4 per 100,000.
Suicide Rate Trend
Families & Children
21.0% of children in Seneca County live in poverty . The teen birth rate is 14.1 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Seneca County is 58.0%. The mean commute time is 23.5 min, which is 14.9% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Seneca County voted Republican with a margin of 11.8%. The vote was 44.1% Dem / 55.9% Rep. Compared to 2020, the margin shifted 2.7 toward Republicans .
Vote Share Over Time
About Seneca County, New York
Seneca County, New York has a total population of 32,920, making it the 1,400th most populous county in the United States. The median age in Seneca County is 43.0 years, which is 10.5% above the national median of 38.9 years.
The median household income in Seneca County is $68,089, which ranks #1,335 of 3,222 counties nationwide. This is 9.4% below the national median of $75,149. The poverty rate is 13.5%, higher than the national rate of 12.6%. The unemployment rate stands at 4.5%.
The median home value in Seneca County is $155,400, 44.9% below the national median. Renters in Seneca County pay a median gross rent of $957 per month. The homeownership rate is 71.0%, compared to the national rate of 64.4%.
In Seneca County, 25.2% of residents aged 25 and older hold a bachelor's degree or higher, 25.1% below the national average of 33.7%. Health insurance coverage stands at 91.0% of the population. The average commute time for workers is 23.5 min.
Seneca County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 87.3% of the population, followed by Hispanic or Latino (4.4%) and Two or More Races (3.5%).
All data for Seneca 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.