
Osborn
- County:
- DeKalb County
- County Seat:
- No
- Area (mi²):
- 0.57
- State:
- Missouri
Osborn is a city located in DeKalb County, Missouri. Osborn has a 2025 population of 376. Osborn is currently growing at a rate of 0.27% annually and its population has increased by 0.8% since the most recent census, which recorded a population of 373 in 2020.
The average household income in Osborn is $62,492 with a poverty rate of 11.38%. The median age in Osborn is 50.8 years: 45.9 years for males, and 52.2 years for females.