In 2019, Polk County, IA had a population of 490k people with a median age of 36 and a median household income of $66,918. Between 2018 and 2019 the population of Polk County, IA grew from 487,204 to 490,161, a 0.607% increase and its median household income declined from $68,291 to $66,918, a −2.01% decrease.
The 5 largest ethnic groups in Polk County, IA are White (Non-Hispanic) (77%), Black or African American (Non-Hispanic) (7.62%), White (Hispanic) (7.01%), Asian (Non-Hispanic) (4.85%), and Two+ (Non-Hispanic) (1.62%). 0% of the households in Polk County, IA speak a non-English language at home as their primary language.
94.8% of the residents in Polk County, IA are U.S. citizens.
The largest universities in Polk County, IA are Des Moines Area Community College (3,695 degrees awarded in 2020), Drake University (1,467 degrees), and Grand View University (590 degrees).
In 2019, the median property value in Polk County, IA was $198,400, and the homeownership rate was 66.3%. Most people in Polk County, IA drove alone to work, and the average commute time was 18.8 minutes. The average car ownership in Polk County, IA was 2 cars per household.
Polk County, IA borders Boone County, IA, Dallas County, IA, Jasper County, IA, Madison County, IA, Marion County, IA, Story County, IA, and Warren County, IA.