Polk County, IA has a population of 474,045 people with a median age of 35.3 and a median household income of $64,067. Between 2015 and 2016 the population of Polk County, IA grew from 467,711 to 474,045, a 1.35% increase and its median household income grew from $60,176 to $64,067, a 6.47% increase.
The population of Polk County, IA is 78.2% White, 8.21% Hispanic, and 6.44% Black. 12.6% of the people in Polk County, IA speak a non-English language, and 94.8% are U.S. citizens.
The largest universities in Polk County, IA are Des Moines Area Community College, with 3,573 graduates, Drake University, with 1,523 graduates, and Grand View University, with 671 graduates.
The median property value in Polk County, IA is $171,800, and the homeownership rate is 67%. Most people in Polk County, IA commute by Drove Alone, and the average commute time is 18.3 minutes. The average car ownership in Polk County, IA is 2 cars per household.
Polk County, IA is the 1st most populated county in Iowa and borders Boone County, IA; Dallas County, IA; Jasper County, IA; Madison County, IA; Marion County, IA; Story County, IA; Warren County, IA& 2 more.