Oliver is located in Adams County, Ohio. Oliver has a 2025 population of 1,342 . Oliver is currently growing at a rate of 0.3% annually but its population has decreased by -0.15% since the most recent census, which recorded a population of 1,344 in 2020.
The median age in Oliver is 35.5 years: 35.6 years for males, and 27.9 years for females. For every 100 females there are 99.1 males.
Data after 2023 is projected based on recent change
The racial composition of Oliver includes 92.97% White, 4.07% other race, and smaller percentages for Black or African American and multiracial populations.
White (92.97%)
Other race (4.07%)
Black or African American (2.97%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 846 | 92.97% |
| Other race | 37 | 4.07% |
| Black or African American | 27 | 2.97% |
Married
Widowed
Divorced
Separated
Never Married