| Index | Harrold | South Dakota | National |
| Income per capita | $30,627 | $27,516 | $29,829 |
| Median household income | $62,500 | $52,078 | $55,322 |
| Median income owner occupied | $65,313 | $66,299 | $70,586 |
| Median income renter occupied | $60,625 | $30,800 | $35,192 |
| Median earnings male | $51,667 | $35,140 | $36,919 |
| Median earnings female | $37,750 | $24,451 | $26,250 |
| Unemployment rate | 0.0% | 2.8% | 4.7% |
| Poverty level | 3.6% | 14.0% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 15.8% | 15.8% |
| Manufacturing sector | 39.5% | 39.5% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 0.0% | 0.0% |
| Public administration | 5.3% | 5.3% |
| Transportation, warehousing & utilities | 13.2% | 13.2% |
| Education, health & social services | 2.6% | 2.6% |
| Other | 23.7% | 23.7% |
| City | Population | Household Income | National Avg. |
| Highmore, SD | 832 | $57,321 | 3.6% |
| Blunt, SD | 383 | $53,478 | 3.3% |
| Harrold, SD | 110 | $62,500 | 13.0% |
| City | Population | Household Income | National Avg. |
| Naukati Bay, AK | 110 | $0 | 100.0% |
| Lower Santan Village, AZ | 110 | $0 | 100.0% |
| Talking Rock, GA | 110 | $0 | 100.0% |
| Masonville, IA | 110 | $48,750 | 11.9% |
| Media, IL | 110 | $63,864 | 15.4% |
| Harrold, SD | 110 | $62,500 | 13.0% |