Seneca County's estimated 2026 population is 33,118 with a growth rate of 0.71% in the past year according to the most recent United States census data. Seneca County is the 57th largest county in New York. The 2010 population was 35,271 and has seen a growth of -6.1% since that time.
Data after 2023 is projected based on recent change
The racial composition of Seneca County includes 89.42% White, 3.8% Black or African American, and smaller percentages for other race, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
White (89.42%)
Two or more races (4.54%)
Black or African American (3.8%)
Other race (1.48%)
Asian (0.69%)
Native American (0.07%)
Native Hawaiian or Pacific Islander (0.01%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 29,619 | 89.42% |
| Two or more races | 1,504 | 4.54% |
| Black or African American | 1,260 | 3.8% |
| Other race | 489 | 1.48% |
| Asian | 227 | 0.69% |
| Native American | 22 | 0.07% |
| Native Hawaiian or Pacific Islander | 4 | 0.01% |
Married
Widowed
Divorced
Separated
Never Married
Seneca County's average per capita income is $46,286. Household income levels show a median of $66,007. The poverty rate stands at 13.32%.
Name | Median | Mean |
|---|---|---|
| Married Families | $99,775 | $129,262 |
| Families | $86,917 | $112,983 |
| Households | $66,007 | $86,730 |
| Non Families | $39,559 | $48,163 |
Average Income
Median Household Income
Poverty Rate