| Index | Martelle | Iowa | National |
| Income per capita | $30,790 | $28,872 | $29,829 |
| Median household income | $75,000 | $54,570 | $55,322 |
| Median income owner occupied | $82,500 | $66,527 | $70,586 |
| Median income renter occupied | $40,000 | $30,828 | $35,192 |
| Median earnings male | $49,792 | $37,409 | $36,919 |
| Median earnings female | $40,234 | $25,115 | $26,250 |
| Unemployment rate | 1.5% | 3.1% | 4.7% |
| Poverty level | 5.8% | 12.3% | 15.1% |
| Labour Type | Male | Female |
| Construction industry | 25.3% | 25.3% |
| Manufacturing sector | 14.1% | 14.1% |
| Financial & insurance services | 12.1% | 12.1% |
| Wholesale & retail services | 6.1% | 6.1% |
| Public administration | 2.0% | 2.0% |
| Transportation, warehousing & utilities | 5.1% | 5.1% |
| Education, health & social services | 5.1% | 5.1% |
| Other | 28.3% | 28.3% |
| City | Population | Household Income | National Avg. |
| Ely, IA | 2,224 | $94,773 | 71.3% |
| Bertram, IA | 269 | $91,250 | 64.9% |
| Solon, IA | 2,690 | $83,897 | 51.7% |
| Lisbon, IA | 2,138 | $77,475 | 40.0% |
| Marion, IA | 39,910 | $72,500 | 31.1% |
| Martelle, IA | 309 | $75,000 | 35.6% |
| City | Population | Household Income | National Avg. |
| Dillon Beach, CA | 309 | $171,477 | 210.0% |
| Esto, FL | 309 | $38,750 | 30.0% |
| Bancroft, ID | 309 | $57,917 | 4.7% |
| Hollister, ID | 309 | $41,250 | 25.4% |
| Newport, IN | 309 | $47,500 | 14.1% |
| Martelle, IA | 309 | $75,000 | 35.6% |
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