Washington township is located in Hardin County, Ohio. Washington township has a 2026 population of 705. Washington township is currently declining at a rate of -0.14% annually and its population has decreased by -2.49% since the most recent census, which recorded a population of 723 in 2020.
The median age in Washington township is 43.1 years: 42.1 years for males, and 43.9 years for females. For every 100 females there are 120.9 males.
Data after 2023 is projected based on recent change
Overall: 43.1 years
Female: 43.9 years
Male: 42.1 years
There are 488 adults, (159 of whom are seniors) in Washington township.
Female: 278 (45.3%)
Male: 336 (54.7%)
The racial composition of Washington township includes 97.88% White, and smaller percentages for Black or African American, Two or more races and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 601 | 97.88% |
| Black or African American | 8 | 1.3% |
| Two or more races | 5 | 0.81% |