Olean
- County:
- Miller County
- County Seat:
- No
- Area (mi²):
- 0.173
- State:
- Missouri
Olean is a town located in Miller County, Missouri. Olean has a 2026 population of 121. Olean is currently declining at a rate of 0% annually and its population has increased by 2.54% since the most recent census, which recorded a population of 118 in 2020.
The median age in Olean is 26.9 years: 34.1 years for males, and 26.3 years for females. For every 100 females there are 69.7 males.