| Index | Walnut | Iowa | National |
| Income per capita | $41,015 | $42,672 | $44,883 |
| Median household income | $70,368 | $81,387 | $81,333 |
| Median income owner occupied | $86,553 | $98,724 | $106,172 |
| Median income renter occupied | $29,292 | $45,890 | $52,080 |
| Median earnings male | $46,223 | $54,047 | $54,343 |
| Median earnings female | $28,763 | $36,462 | $38,439 |
| Unemployment rate | 1.4% | 3.2% | 4.9% |
| Poverty level | 10.6% | 12.3% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 13.6% | 13.6% |
| Manufacturing sector | 9.7% | 9.7% |
| Financial & insurance services | 2.4% | 2.4% |
| Wholesale & retail services | 28.2% | 28.2% |
| Public administration | 1.0% | 1.0% |
| Transportation, warehousing & utilities | 24.3% | 24.3% |
| Education, health & social services | 2.4% | 2.4% |
| Other | 18.0% | 18.0% |
| City | Population | Household Income | National Avg. |
| Oakland, IA | 1,704 | $86,626 | 6.5% |
| Elk Horn, IA | 567 | $84,246 | 3.6% |
| Avoca, IA | 1,413 | $79,470 | 2.3% |
| Hancock, IA | 271 | $77,610 | 4.6% |
| Harlan, IA | 4,917 | $75,860 | 6.7% |
| Walnut, IA | 761 | $70,368 | 13.5% |
| City | Population | Household Income | National Avg. |
| Ivalee, AL | 761 | $49,961 | 38.6% |
| Watkins, CO | 761 | $186,269 | 129.0% |
| Waverly, FL | 761 | $70,157 | 13.7% |
| Lanesville, IN | 761 | $123,585 | 51.9% |
| New Haven, KY | 761 | $77,827 | 4.3% |
| Walnut, IA | 761 | $70,368 | 13.5% |