
Mosby
- County:
- Clay County
- County Seat:
- No
- Area (mi²):
- 1.855
- State:
- Missouri
Mosby is a city located in Clay County, Missouri. Mosby has a 2025 population of 98. Mosby is currently declining at a rate of 0% annually and its population has decreased by -2% since the most recent census, which recorded a population of 100 in 2020.
The average household income in Mosby is $74,883 with a poverty rate of 12.5%. The median age in Mosby is 54.7 years: 51.3 years for males, and 60.3 years for females.