| Index | Letcher | South Dakota | National |
| Income per capita | $38,506 | $41,166 | $44,883 |
| Median household income | $82,883 | $77,914 | $81,333 |
| Median income owner occupied | $83,014 | $100,475 | $106,172 |
| Median income renter occupied | $62,723 | $45,187 | $52,080 |
| Median earnings male | $62,849 | $52,540 | $54,343 |
| Median earnings female | $39,202 | $36,073 | $38,439 |
| Unemployment rate | 4.3% | 2.9% | 4.9% |
| 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 | 514 | $68,919 | 15.3% |
| Woonsocket, SD | 778 | $68,218 | 16.1% |
| Mitchell, SD | 16,163 | $66,736 | 17.9% |
| Artesian, SD | 189 | $64,738 | 20.4% |
| Forestburg, SD | 81 | $0 | 100.0% |
| Letcher, SD | 195 | $82,883 | 1.9% |
| City | Population | Household Income | National Avg. |
| Halibut Cove, AK | 195 | $116,164 | 42.8% |
| Lutak, AK | 195 | $0 | 100.0% |
| Huetter, ID | 195 | $48,699 | 40.1% |
| Plattville, IL | 195 | $129,752 | 59.5% |
| Corunna, IN | 195 | $82,753 | 1.7% |
| Letcher, SD | 195 | $82,883 | 1.9% |