| Index | Polk City | Iowa | National |
| Income per capita | $66,491 | $42,672 | $44,883 |
| Median household income | $189,188 | $81,387 | $81,333 |
| Median income owner occupied | $209,015 | $98,724 | $106,172 |
| Median income renter occupied | $0 | $45,890 | $52,080 |
| Median earnings male | $97,810 | $54,047 | $54,343 |
| Median earnings female | $82,854 | $36,462 | $38,439 |
| Unemployment rate | 3.2% | 3.2% | 4.9% |
| Poverty level | 3.7% | 12.3% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 3.9% | 3.9% |
| Manufacturing sector | 11.5% | 11.5% |
| Financial & insurance services | 17.7% | 17.7% |
| Wholesale & retail services | 24.7% | 24.7% |
| Public administration | 3.2% | 3.2% |
| Transportation, warehousing & utilities | 5.3% | 5.3% |
| Education, health & social services | 8.5% | 8.5% |
| Other | 25.3% | 25.3% |
| City | Population | Household Income | National Avg. |
| Alleman, IA | 447 | $167,707 | 106.2% |
| Huxley, IA | 4,000 | $163,490 | 101.0% |
| Clive, IA | 17,633 | $158,563 | 95.0% |
| Kelley, IA | 377 | $153,700 | 89.0% |
| Granger, IA | 1,931 | $144,569 | 77.7% |
| Polk City, IA | 4,940 | $189,188 | 132.6% |
| City | Population | Household Income | National Avg. |
| West Milton, OH | 4,940 | $69,706 | 14.3% |
| Bluefield, VA | 4,940 | $69,286 | 14.8% |
| Ahoskie, NC | 4,941 | $52,934 | 34.9% |
| Royersford, PA | 4,937 | $85,415 | 5.0% |
| West Pittston, PA | 4,943 | $75,088 | 7.7% |
| Polk City, IA | 4,940 | $189,188 | 132.6% |