Seneca County's estimated 2026 population is 33,095 with a growth rate of 0.64% 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 -6.17% since that time.
Data after 2023 is projected based on recent change
Overall: 43 years
Female: 45 years
Male: 41.3 years
There are 26,238 adults, (7,104 of whom are seniors) in Seneca County.
Female: 15,918 (48.4%)
Male: 17,002 (51.6%)
The racial composition of Seneca County includes 88.41% White, 3.75% Black or African American, and smaller percentages for other race, Asian, Native American and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 29,103 | 88.41% |
| Two or more races | 1,824 | 5.54% |
| Black or African American | 1,234 | 3.75% |
| Other race | 522 | 1.59% |
| Asian | 201 | 0.61% |
| Native American | 36 | 0.11% |
Seneca County's average per capita income is $48,280. Household income levels show a median of $68,089. The poverty rate stands at 13.47%.
Name | Median | Mean |
|---|---|---|
| Married Families | $103,007 | - |
| Families | $91,794 | $118,167 |
| Households | $68,089 | $89,874 |
| Non Families | $41,100 | $50,504 |
Average Income
Median Household Income
Poverty Rate
