| Index | Marietta | Minnesota | National |
| Income per capita | $17,941 | $33,225 | $29,829 |
| Median household income | $23,846 | $63,217 | $55,322 |
| Median income owner occupied | $22,917 | $77,618 | $70,586 |
| Median income renter occupied | $33,250 | $34,348 | $35,192 |
| Median earnings male | $0 | $40,933 | $36,919 |
| Median earnings female | $0 | $29,114 | $26,250 |
| Unemployment rate | 0.0% | 3.4% | 4.7% |
| Poverty level | 34.1% | 10.8% | 15.1% |
| Labour Type | Male | Female |
| Construction industry | 32.3% | 32.3% |
| Manufacturing sector | 0.0% | 0.0% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 32.3% | 32.3% |
| Public administration | 0.0% | 0.0% |
| Transportation, warehousing & utilities | 12.9% | 12.9% |
| Education, health & social services | 0.0% | 0.0% |
| Other | 22.6% | 22.6% |
| City | Population | Household Income | National Avg. |
| Nassau, MN | 67 | $73,333 | 32.6% |
| La Bolt, SD | 99 | $59,167 | 7.0% |
| Milbank, SD | 3,137 | $58,476 | 5.7% |
| Altamont, SD | 30 | $51,250 | 7.4% |
| Bellingham, MN | 266 | $50,313 | 9.1% |
| Marietta, MN | 167 | $23,846 | 56.9% |
| City | Population | Household Income | National Avg. |
| Hartly, DE | 167 | $125,949 | 127.7% |
| Lidderdale, IA | 167 | $60,313 | 9.0% |
| Sims, IL | 167 | $45,893 | 17.0% |
| Salvisa, KY | 167 | $58,636 | 6.0% |
| Burkittsville, MD | 167 | $71,071 | 28.5% |
| Marietta, MN | 167 | $23,846 | 56.9% |
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