| Index | Plankinton | South Dakota | National |
| Income per capita | $33,231 | $27,516 | $29,829 |
| Median household income | $62,917 | $52,078 | $55,322 |
| Median income owner occupied | $74,375 | $66,299 | $70,586 |
| Median income renter occupied | $36,750 | $30,800 | $35,192 |
| Median earnings male | $42,222 | $35,140 | $36,919 |
| Median earnings female | $35,781 | $24,451 | $26,250 |
| Unemployment rate | 0.0% | 2.8% | 4.7% |
| Poverty level | 3.0% | 14.0% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 13.2% | 13.2% |
| Manufacturing sector | 23.5% | 23.5% |
| Financial & insurance services | 2.0% | 2.0% |
| Wholesale & retail services | 4.4% | 4.4% |
| Public administration | 2.0% | 2.0% |
| Transportation, warehousing & utilities | 11.8% | 11.8% |
| Education, health & social services | 6.4% | 6.4% |
| Other | 36.8% | 36.8% |
| City | Population | Household Income | National Avg. |
| White Lake, SD | 437 | $57,857 | 4.6% |
| Aurora Center, SD | 46 | $56,161 | 1.5% |
| Stickney, SD | 265 | $52,969 | 4.3% |
| Mount Vernon, SD | 500 | $46,250 | 16.4% |
| Storla, SD | 21 | $0 | 100.0% |
| Plankinton, SD | 709 | $62,917 | 13.7% |
| City | Population | Household Income | National Avg. |
| Two Rivers, AK | 709 | $0 | 100.0% |
| Hartford, IA | 709 | $62,250 | 12.5% |
| Onaga, KS | 709 | $41,583 | 24.8% |
| Conway, MO | 709 | $41,154 | 25.6% |
| Silver Springs, NY | 709 | $37,000 | 33.1% |
| Plankinton, SD | 709 | $62,917 | 13.7% |