| Index | Delmar | Iowa | National |
| Income per capita | $42,769 | $42,672 | $44,883 |
| Median household income | $98,610 | $81,387 | $81,333 |
| Median income owner occupied | $107,607 | $98,724 | $106,172 |
| Median income renter occupied | $41,097 | $45,890 | $52,080 |
| Median earnings male | $60,255 | $54,047 | $54,343 |
| Median earnings female | $44,581 | $36,462 | $38,439 |
| Unemployment rate | 1.1% | 3.2% | 4.9% |
| 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 | 304 | $117,141 | 44.0% |
| Preston, IA | 1,045 | $106,156 | 30.5% |
| Grand Mound, IA | 573 | $100,991 | 24.2% |
| Springbrook, IA | 133 | $98,156 | 20.7% |
| Calamus, IA | 378 | $89,809 | 10.4% |
| Delmar, IA | 511 | $98,610 | 21.2% |
| City | Population | Household Income | National Avg. |
| Cohasset, CA | 511 | $98,939 | 21.6% |
| Miranda, CA | 511 | $104,673 | 28.7% |
| Aguilar, CO | 511 | $36,275 | 55.4% |
| Garcon Point, FL | 511 | $204,696 | 151.7% |
| Guilford, ME | 511 | $58,404 | 28.2% |
| Delmar, IA | 511 | $98,610 | 21.2% |