IA History & Facts
County Information - Iowa
By Cynthia Kirkeby
May 16, 2006, 13:37 PST

County Information for Iowa


There are 99 counties in the state of Iowa.

The largest Iowa county by size is Kossuth County, which is 973 square miles.

The largest Iowa county by population is Polk County, which has a population of 374,601.

Source: National Association of Counties


Here are Iowa QuickFacts from the U.S. Census Bureau.