Cass County Flag

Cass County

State:
Iowa
County Seat:
Atlantic

Cass County's estimated 2026 population is 12,915 with a growth rate of -0.35% in the past year according to the most recent United States census data. Cass County is the 58th largest county in Iowa. The 2010 population was 13,927 and has seen a growth of -7.27% since that time.

12,915
Total Population
23
Population Density (mi²)
58
Population Rank (State)
-45 -0.35%
Annual Population Growth

Cass County Population

Demographics

Economics and Income Statistics