| Index | Delmar | Iowa | National |
| Income per capita | $28,943 | $28,872 | $29,829 |
| Median household income | $66,705 | $54,570 | $55,322 |
| Median income owner occupied | $71,250 | $66,527 | $70,586 |
| Median income renter occupied | $27,813 | $30,828 | $35,192 |
| Median earnings male | $41,667 | $37,409 | $36,919 |
| Median earnings female | $30,913 | $25,115 | $26,250 |
| Unemployment rate | 1.0% | 3.1% | 4.7% |
| Poverty level | 5.9% | 12.3% | 15.1% |
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| Labour Type | Male | Female |
| Construction industry | 17.1% | 17.1% |
| Manufacturing sector | 26.8% | 26.8% |
| Financial & insurance services | 3.3% | 3.3% |
| Wholesale & retail services | 22.0% | 22.0% |
| Public administration | 3.3% | 3.3% |
| Transportation, warehousing & utilities | 7.3% | 7.3% |
| Education, health & social services | 8.9% | 8.9% |
| Other | 11.4% | 11.4% |
| City | Population | Household Income | National Avg. |
| Goose Lake, IA | 298 | $78,529 | 41.9% |
| Preston, IA | 1,013 | $70,556 | 27.5% |
| Springbrook, IA | 127 | $66,875 | 20.9% |
| Grand Mound, IA | 552 | $66,750 | 20.7% |
| Calamus, IA | 366 | $60,156 | 8.7% |
| Delmar, IA | 491 | $66,705 | 20.6% |
| City | Population | Household Income | National Avg. |
| Wheatfields, AZ | 491 | $0 | 100.0% |
| Walsh, CO | 491 | $30,568 | 44.7% |
| Roopville, GA | 491 | $84,196 | 52.2% |
| Caspian, MI | 491 | $32,813 | 40.7% |
| Shuqualak, MS | 491 | $21,094 | 61.9% |
| Delmar, IA | 491 | $66,705 | 20.6% |
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