| Index | Mount Vernon | South Dakota | National |
| Income per capita | $28,032 | $27,516 | $29,829 |
| Median household income | $46,250 | $52,078 | $55,322 |
| Median income owner occupied | $61,250 | $66,299 | $70,586 |
| Median income renter occupied | $21,554 | $30,800 | $35,192 |
| Median earnings male | $28,542 | $35,140 | $36,919 |
| Median earnings female | $28,611 | $24,451 | $26,250 |
| Unemployment rate | 1.8% | 2.8% | 4.7% |
| Poverty level | 2.8% | 14.0% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 12.2% | 12.2% |
| Manufacturing sector | 13.7% | 13.7% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 6.3% | 6.3% |
| Public administration | 3.4% | 3.4% |
| Transportation, warehousing & utilities | 4.4% | 4.4% |
| Education, health & social services | 3.4% | 3.4% |
| Other | 55.1% | 55.1% |
| City | Population | Household Income | National Avg. |
| Plankinton, SD | 709 | $62,917 | 13.7% |
| Ethan, SD | 328 | $56,667 | 2.4% |
| Letcher, SD | 191 | $56,016 | 1.3% |
| Stickney, SD | 265 | $52,969 | 4.3% |
| Mitchell, SD | 15,599 | $45,318 | 18.1% |
| Mount Vernon, SD | 500 | $46,250 | 16.4% |
| City | Population | Household Income | National Avg. |
| De Beque, CO | 500 | $64,375 | 16.4% |
| Garcon Point, FL | 500 | $134,883 | 143.8% |
| Fairgrove, MI | 500 | $38,611 | 30.2% |
| Vernon, MI | 500 | $59,286 | 7.2% |
| Enterprise, MS | 500 | $57,500 | 3.9% |
| Mount Vernon, SD | 500 | $46,250 | 16.4% |