| Place Name | Olean |
| Place Type | Town |
| ZIP Code(s) | 65064 |
| County | Miller County |
| Area Code(s) | 573 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 180 |
| Population Growth Rate (2010-19) | -10.94% |
| Majority Ethnicity | White 100% |
| US Congressional District(s) | Missouri 3rd |
| State House Districts | 59 |
| State Senate Districts | 6 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 100% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |