Iowa County Flag

Iowa County

State:
Iowa
County Seat:
Marengo

Iowa County's 2026 population is estimated at 16,497, reflecting a 0.22% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Iowa County is the 45th largest county in Iowa. The 2010 population was 16,335 and has grown 0.99% since 2010.

16,497
Total Population
28
Population Density (mi²)
45
Population Rank (State)
37 0.22%
Annual Population Growth

Iowa County Population

Demographics

Economics and Income Statistics