Polk County
| Population: | 513,989 |
| Households: | 189,091 |
| Median Age: | 38.4 |
| Per Capita Income: | $19,663 |
| Average. Household Income: | $50,497 |
| Median Housing Value: | $60,950 |
| Percent of Population with Income over $35,000: | 53.6% |
| Percent of Households with Net Worth over $50,000: | 63.4% |
| Percent of People that have a High School Diploma or Higher: | 68.0% |
