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 2026 population of 100. Mosby is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 100 in 2020.
The median household income in Mosby is $48,750 with a poverty rate of 17.31%. The median age in Mosby is 48.5 years: 43.5 years for males, and 62.5 years for females. For every 100 females there are 100.0 males.