
Decatur township
- County:
- Brown County
- County Seat:
- No
- Area (mi²):
- 34.888
- State:
- Ohio
Decatur township is located in Brown County, Ohio. Decatur township has a 2025 population of 1,281. Decatur township is currently declining at a rate of -0.39% annually and its population has decreased by -2.14% since the most recent census, which recorded a population of 1,309 in 2020.
The average household income in Decatur township is $87,321 with a poverty rate of 15.92%. The median age in Decatur township is 62.2 years: 60.4 years for males, and 63.3 years for females.