Polk County

Polk county is located close to the center of Iowa. Polk county has 573.79 square miles of land area and 17.74 square miles of water area. As of 2010, the total Polk county population is 430,640, which has grown 14.96% since 2000. The population growth rate is much higher than the state average rate of 4.10% and is much higher than the national average rate of 9.71%. Polk county median household income is $56,094 in 2006-2010 and has grown by 21.64% since 2000. The income growth rate is about the same as the state average rate of 21.52% and is higher than the national average rate of 19.17%. Polk county median house value is $149,700 in 2006-2010 and has grown by 45.20% since 2000. The house value growth rate is lower than the state average rate of 49.58% and is lower than the national average rate of 50.42%. As a reference, the national Consumer Price Index (CPI) inflation rate for the same period is 26.63%. On average, the public school district that covers Polk county is much better than the state average in quality. The Polk county area code is 515.

Population 430,640 (2010), rank #1 Population Growth 14.96% since 2000, rank #3 Population Density: 728.01/sq mi, rank #1 Median Household Income: $56,094 at 2006-2010—21.64% increase since 2000, rank #6 Median House Price: $149,700 at 2006-2010—45.20% increase since 2000, rank #6 Time Zone: Central GMT -6:00 with Daylight Saving in the Summer Land Area: 573.79 sq mi, rank #40 Water Area: 17.74 sq mi (3.00%), rank #5 State: Iowa Area: Des Moines-West Des Moines, IA School District: Area Code: 515

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Polk County Map, Border, and Nearby Locations

Polk County Cities / Towns

Polk County Zip Codes

Polk County Census Tracts