Seneca is located in Noble County, Ohio. Seneca has a 2025 population of 416. Seneca is currently growing at a rate of 0.24% annually and its population has increased by 1.22% since the most recent census, which recorded a population of 411 in 2020.
The average household income in Seneca is $78,426 with a poverty rate of 2.4%.The median age in Seneca is 58 years: 61.5 years for males, and 41.6 years for females.
Data after 2023 is projected based on recent change
The racial composition of Seneca includes 98.4% White, and smaller percentages for Two or more races and multiracial populations.
White (98.4%)
Two or more races (1.6%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 492 | 98.4% |
| Two or more races | 8 | 1.6% |
Married
Widowed
Divorced
Separated
Never Married
Seneca's average per capita income is $29,899. Household income levels show a median of $58,992. The poverty rate stands at 2.4%.
Name | Median | Mean |
|---|---|---|
| Households | $58,992 | $78,426 |
| Non Families | $20,694 | $18,185 |
| Families | - | $94,409 |
| Married Families | - | - |
Average Income
Median Household Income
Poverty Rate