In 2021, Polk County, IA had a population of 489k people with a median age of 35.9 and a median household income of $73,015. Between 2020 and 2021 the population of Polk County, IA grew from 485,418 to 488,871, a 0.711% increase and its median household income grew from $69,747 to $73,015, a 4.69% increase.
The 5 largest ethnic groups in Polk County, IA are White (Non-Hispanic) (76.2%), Black or African American (Non-Hispanic) (7.02%), White (Hispanic) (5.15%), Asian (Non-Hispanic) (4.88%), and Two+ (Non-Hispanic) (2.89%).
None of the households in Polk County, IA reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
94.9% of the residents in Polk County, IA are U.S. citizens.
In 2021, the median property value in Polk County, IA was $201,300, and the homeownership rate was 66.9%.
Most people in Polk County, IA drove alone to work, and the average commute time was 19.6 minutes. The average car ownership in Polk County, IA was 2 cars per household.