Maupin
- County:
- Wasco County
- County Seat:
- No
- Area (mi²):
- 1.395
- State:
- Oregon
Maupin is a city located in Wasco County, Oregon. Maupin has a 2026 population of 421. Maupin is currently declining at a rate of 0% annually and its population has decreased by -0.24% since the most recent census, which recorded a population of 422 in 2020.