| Index | Le Mars | Iowa | National |
| Income per capita | $50,387 | $42,672 | $44,883 |
| Median household income | $101,661 | $81,387 | $81,333 |
| Median income owner occupied | $123,135 | $98,724 | $106,172 |
| Median income renter occupied | $72,770 | $45,890 | $52,080 |
| Median earnings male | $71,312 | $54,047 | $54,343 |
| Median earnings female | $48,490 | $36,462 | $38,439 |
| Unemployment rate | 1.8% | 3.2% | 4.9% |
| Poverty level | 7.7% | 12.3% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 7.3% | 7.3% |
| Manufacturing sector | 31.1% | 31.1% |
| Financial & insurance services | 2.2% | 2.2% |
| Wholesale & retail services | 20.7% | 20.7% |
| Public administration | 2.5% | 2.5% |
| Transportation, warehousing & utilities | 13.1% | 13.1% |
| Education, health & social services | 7.3% | 7.3% |
| Other | 15.9% | 15.9% |
| City | Population | Household Income | National Avg. |
| Oyens, IA | 102 | $142,195 | 74.8% |
| Hinton, IA | 837 | $126,687 | 55.8% |
| Alton, IA | 1,583 | $123,686 | 52.1% |
| Struble, IA | 99 | $112,059 | 37.8% |
| Maurice, IA | 307 | $110,128 | 35.4% |
| Le Mars, IA | 10,368 | $101,661 | 25.0% |
| City | Population | Household Income | National Avg. |
| Plymouth, IN | 10,366 | $59,392 | 27.0% |
| Ventnor City, NJ | 10,370 | $81,871 | 0.7% |
| Fountain Inn, SC | 10,371 | $98,377 | 21.0% |
| Rideau Lakes, ON | 10,371 | n/a | |
| Chalco, NE | 10,372 | $112,191 | 37.9% |
| Le Mars, IA | 10,368 | $101,661 | 25.0% |