Clay County Flag

Clay County

State:
Missouri
County Seat:
Liberty

Clay County's estimated 2026 population is 267,390 with a growth rate of 0.89% in the past year according to the most recent United States census data. Clay County is the 6th largest county in Missouri. The 2010 population was 222,649 and has seen a growth of 20.09% since that time.

267,390
Total Population
672
Population Density (mi²)
6
Population Rank (State)
2.4K 0.89%
Annual Population Growth

Clay County Population

Demographics

Economics and Income Statistics