| Index | Walnut | Iowa | National |
| Income per capita | $27,866 | $28,872 | $29,829 |
| Median household income | $47,443 | $54,570 | $55,322 |
| Median income owner occupied | $58,500 | $66,527 | $70,586 |
| Median income renter occupied | $19,688 | $30,828 | $35,192 |
| Median earnings male | $31,438 | $37,409 | $36,919 |
| Median earnings female | $19,708 | $25,115 | $26,250 |
| Unemployment rate | 1.3% | 3.1% | 4.7% |
| 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 | 1,665 | $57,454 | 3.9% |
| Elk Horn, IA | 548 | $56,719 | 2.5% |
| Avoca, IA | 1,368 | $53,688 | 3.0% |
| Hancock, IA | 263 | $51,667 | 6.6% |
| Kimballton, IA | 275 | $51,250 | 7.4% |
| Walnut, IA | 746 | $47,443 | 14.2% |
| City | Population | Household Income | National Avg. |
| Watkins, CO | 746 | $126,563 | 128.8% |
| Corydon, KY | 746 | $55,341 | 0.0% |
| Hancock, MN | 746 | $67,969 | 22.9% |
| Holcomb, MO | 746 | $44,583 | 19.4% |
| Wood Heights, MO | 746 | $82,679 | 49.5% |
| Walnut, IA | 746 | $47,443 | 14.2% |