Demographic Data

Geographic area	Population	Housing units
2000 Census
Johnson County	111,006	45,831
Linn County	191,701	80,551
Polk County	374,601	156,447
1990 Census
Johnson County	96,119
Linn County	168,767
Polk County	327,140
Percent of Increase
Johnson County	13.42
Linn County	11.97
Polk County	12.67
US Census Quick Facts
Percent of change Johnson County	15.5
Percent of change Linn County	13.6
Percent of change Polk County	14.5

For additional demographic data about the Iowa City Metropolitian Statistical Area click here.