| Index | Fairfax | South Dakota | National |
| Income per capita | $27,228 | $27,516 | $29,829 |
| Median household income | $31,500 | $52,078 | $55,322 |
| Median income owner occupied | $0 | $66,299 | $70,586 |
| Median income renter occupied | $0 | $30,800 | $35,192 |
| Median earnings male | $0 | $35,140 | $36,919 |
| Median earnings female | $15,417 | $24,451 | $26,250 |
| Unemployment rate | 0.0% | 2.8% | 4.7% |
| Poverty level | 19.6% | 14.0% | 15.1% |
| Labour Type | Male | Female |
| Construction industry | 8.9% | 8.9% |
| Manufacturing sector | 0.0% | 0.0% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 44.4% | 44.4% |
| Public administration | 6.7% | 6.7% |
| Transportation, warehousing & utilities | 4.4% | 4.4% |
| Education, health & social services | 0.0% | 0.0% |
| Other | 35.6% | 35.6% |
| City | Population | Household Income | National Avg. |
| Butte, NE | 348 | $46,875 | 15.3% |
| Spencer, NE | 345 | $40,132 | 27.5% |
| Bonesteel, SD | 386 | $37,708 | 31.8% |
| Naper, NE | 83 | $25,000 | 54.8% |
| St. Charles, SD | 8 | $0 | 100.0% |
| Fairfax, SD | 138 | $31,500 | 43.1% |
| City | Population | Household Income | National Avg. |
| Reader, AR | 138 | $15,822 | 71.4% |
| Winchester, AR | 138 | $30,893 | 44.2% |
| Jackson Lake, CO | 138 | $47,292 | 14.5% |
| Trail Side, CO | 138 | $0 | 100.0% |
| Jersey, GA | 138 | $0 | 100.0% |
| Fairfax, SD | 138 | $31,500 | 43.1% |
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