Cass County Flag

Cass County

State:
Missouri
County Seat:
Harrisonville

Cass County's estimated 2026 population is 117,774 with a growth rate of 1.65% in the past year according to the most recent United States census data. Cass County is the 10th largest county in Missouri. The 2010 population was 99,756 and has seen a growth of 18.06% since that time.

117,774
Total Population
169
Population Density (mi²)
10
Population Rank (State)
1.9K 1.65%
Annual Population Growth

Cass County Population

Demographics

Economics and Income Statistics