| Index | Lake Preston | South Dakota | National |
| Income per capita | $33,599 | $27,516 | $29,829 |
| Median household income | $51,397 | $52,078 | $55,322 |
| Median income owner occupied | $65,125 | $66,299 | $70,586 |
| Median income renter occupied | $26,250 | $30,800 | $35,192 |
| Median earnings male | $35,000 | $35,140 | $36,919 |
| Median earnings female | $36,518 | $24,451 | $26,250 |
| Unemployment rate | 0.0% | 2.8% | 4.7% |
| Poverty level | 14.3% | 14.0% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 24.5% | 24.5% |
| Manufacturing sector | 23.8% | 23.8% |
| Financial & insurance services | 3.3% | 3.3% |
| Wholesale & retail services | 7.3% | 7.3% |
| Public administration | 2.0% | 2.0% |
| Transportation, warehousing & utilities | 7.3% | 7.3% |
| Education, health & social services | 5.3% | 5.3% |
| Other | 26.5% | 26.5% |
| City | Population | Household Income | National Avg. |
| Lake Poinsett, SD | 480 | $84,583 | 52.9% |
| De Smet, SD | 1,041 | $64,479 | 16.6% |
| Arlington, SD | 1,007 | $55,125 | 0.4% |
| Badger, SD | 94 | $52,000 | 6.0% |
| Oldham, SD | 131 | $45,000 | 18.7% |
| Lake Preston, SD | 448 | $51,397 | 7.1% |
| City | Population | Household Income | National Avg. |
| Grubbs, AR | 448 | $50,625 | 8.5% |
| Prattsville, AR | 448 | $39,313 | 28.9% |
| Andrew, IA | 448 | $52,857 | 4.5% |
| Badger, IA | 448 | $64,028 | 15.7% |
| Marquette, IA | 448 | $39,000 | 29.5% |
| Lake Preston, SD | 448 | $51,397 | 7.1% |