| Index | Humboldt | South Dakota | National |
| Income per capita | $36,016 | $41,166 | $44,883 |
| Median household income | $106,261 | $77,914 | $81,333 |
| Median income owner occupied | $121,077 | $100,475 | $106,172 |
| Median income renter occupied | $0 | $45,187 | $52,080 |
| Median earnings male | $71,095 | $52,540 | $54,343 |
| Median earnings female | $43,574 | $36,073 | $38,439 |
| Unemployment rate | 2.0% | 2.9% | 4.9% |
| Poverty level | 1.7% | 14.0% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 19.0% | 19.0% |
| Manufacturing sector | 20.9% | 20.9% |
| Financial & insurance services | 1.2% | 1.2% |
| Wholesale & retail services | 19.0% | 19.0% |
| Public administration | 3.1% | 3.1% |
| Transportation, warehousing & utilities | 10.4% | 10.4% |
| Education, health & social services | 9.2% | 9.2% |
| Other | 17.2% | 17.2% |
| City | Population | Household Income | National Avg. |
| Crooks, SD | 1,458 | $151,266 | 86.0% |
| Tea, SD | 5,910 | $133,286 | 63.9% |
| Hartford, SD | 3,408 | $120,549 | 48.2% |
| Colton, SD | 770 | $105,982 | 30.3% |
| Montrose, SD | 568 | $84,412 | 3.8% |
| Humboldt, SD | 699 | $106,261 | 30.6% |
| City | Population | Household Income | National Avg. |
| Bergman, AR | 699 | $80,926 | 0.5% |
| Stanwood, IA | 699 | $83,793 | 3.0% |
| Union, IL | 699 | $143,766 | 76.8% |
| Sandyfield, NC | 699 | $42,340 | 47.9% |
| LaMoure, ND | 699 | $96,418 | 18.5% |
| Humboldt, SD | 699 | $106,261 | 30.6% |