| Index | Letcher | South Dakota | National |
| Income per capita | $25,807 | $27,516 | $29,829 |
| Median household income | $56,016 | $52,078 | $55,322 |
| Median income owner occupied | $56,786 | $66,299 | $70,586 |
| Median income renter occupied | $42,813 | $30,800 | $35,192 |
| Median earnings male | $43,500 | $35,140 | $36,919 |
| Median earnings female | $27,031 | $24,451 | $26,250 |
| Unemployment rate | 4.1% | 2.8% | 4.7% |
| Poverty level | 9.9% | 14.0% | 15.1% |
| Labour Type | Male | Female |
| Construction industry | 5.4% | 5.4% |
| Manufacturing sector | 39.3% | 39.3% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 3.6% | 3.6% |
| Public administration | 3.6% | 3.6% |
| Transportation, warehousing & utilities | 8.9% | 8.9% |
| Education, health & social services | 0.0% | 0.0% |
| Other | 39.3% | 39.3% |
| City | Population | Household Income | National Avg. |
| Mount Vernon, SD | 500 | $46,250 | 16.4% |
| Woonsocket, SD | 748 | $45,446 | 17.9% |
| Mitchell, SD | 15,599 | $45,318 | 18.1% |
| Artesian, SD | 181 | $43,750 | 20.9% |
| Storla, SD | 21 | $0 | 100.0% |
| Letcher, SD | 191 | $56,016 | 1.3% |
| City | Population | Household Income | National Avg. |
| Coffee Springs, AL | 191 | $40,556 | 26.7% |
| Vredenburgh, AL | 191 | $10,139 | 81.7% |
| Hackberry, AZ | 191 | $0 | 100.0% |
| Dixon, IA | 191 | $62,083 | 12.2% |
| Hanlontown, IA | 191 | $62,321 | 12.7% |
| Letcher, SD | 191 | $56,016 | 1.3% |
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