
Cass County
- State:
- Missouri
- County Seat:
- Harrisonville
Cass County's estimated 2025 population is 114,482 with a growth rate of 1.22% in the past year according to the most recent United States census data. Cass County is the 11th largest county in Missouri. The 2010 population was 99,756 and has seen a growth of 14.76% since that time.