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Number of Iowa Counties

How many counties are there in Iowa?

99.

Iowa has 99 counties. According to the 2009 County Population Estimates, published by the US Census Bureau, the top 3 populated counties are: Polk (429,439), Linn (209,226) and Scott (166,650); Adams is the least populated county, with only 3,930 residents. The county with the greatest population decrease is Cerro Gordo, with minus 2,838 residents from 2000 to 2009.

This fact is verified on : May 4, 2010.





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