Seneca township Flag

Seneca township

County:
Monroe County
County Seat:
No
Area (mi²):
22.46
State:
Ohio

Seneca township is located in Monroe County, Ohio. Seneca township has a 2026 population of 415. Seneca township is currently declining at a rate of -0.72% annually and its population has decreased by -4.16% since the most recent census, which recorded a population of 433 in 2020.

The median age in Seneca township is 29.3 years: 11.8 years for males, and 32.5 years for females. For every 100 females there are 208.5 males.

415
Total Population
18
Density (mi²)
-3 -0.72%
Growth

Seneca township Population

Seneca township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026415-3-0.72%
2025418-3-0.71%
2024421-3-0.71%
2023424-2-0.47%
2022426-6-1.39%
2021432-1-0.23%
2020433-1-0.23%
2019443-3-0.67%
2018446-4-0.89%
2017450-5-1.1%
2016455-5-1.09%
2015460-5-1.08%
2014465-4-0.85%
201346910.21%
2012468-6-1.27%
201147420.42%
2010472-1-0.21%

Median Age

Overall: 29.3 years
Female: 32.5 years
Male: 11.8 years

Seneca township Adults

There are 213 adults, (79 of whom are seniors) in Seneca township.

Sex Ratio

Female: 130 (32.4%)
Male: 271 (67.6%)

Demographics

The racial composition of Seneca township includes 100% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White401100%
Race
Population ↓
Percentage (of total)
White401100%

Seneca township Marital Status

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)