
Allen township
- County:
- Darke County
- County Seat:
- No
- Area (mi²):
- 28.765
- State:
- Ohio
Allen township is located in Darke County, Ohio. Allen township has a 2025 population of 995. Allen township is currently declining at a rate of -0.2% annually and its population has decreased by -0.9% since the most recent census, which recorded a population of 1,004 in 2020.
The average household income in Allen township is $81,334 with a poverty rate of 12.8%. The median age in Allen township is 45.1 years: 44 years for males, and 45.5 years for females.