| Index | King Arthur Park | Montana | National |
| Income per capita | $30,088 | $27,309 | $29,829 |
| Median household income | $86,953 | $48,380 | $55,322 |
| Median income owner occupied | $105,107 | $60,564 | $70,586 |
| Median income renter occupied | $0 | $30,651 | $35,192 |
| Median earnings male | $40,795 | $31,798 | $36,919 |
| Median earnings female | $40,957 | $21,711 | $26,250 |
| Unemployment rate | 0.0% | 3.6% | 4.7% |
| Poverty level | 2.6% | 14.9% | 15.1% |
| Labour Type | Male | Female |
| Construction industry | 27.1% | 27.1% |
| Manufacturing sector | 8.3% | 8.3% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 18.3% | 18.3% |
| Public administration | 4.6% | 4.6% |
| Transportation, warehousing & utilities | 0.0% | 0.0% |
| Education, health & social services | 19.2% | 19.2% |
| Other | 22.5% | 22.5% |
| City | Population | Household Income | National Avg. |
| Springhill, MT | 198 | $104,750 | 89.3% |
| Four Corners, MT | 4,859 | $77,907 | 40.8% |
| Amsterdam, MT | 169 | $71,875 | 29.9% |
| Churchill, MT | 989 | $69,728 | 26.0% |
| Belgrade, MT | 9,184 | $62,335 | 12.7% |
| King Arthur Park, MT | 1,933 | $86,953 | 57.2% |
| City | Population | Household Income | National Avg. |
| Kingsley, MI | 1,933 | $44,694 | 19.2% |
| Milo, ME | 1,932 | $36,736 | 33.6% |
| Morenci, MI | 1,932 | $41,862 | 24.3% |
| Kenvil, NJ | 1,934 | $67,770 | 22.5% |
| Clayton, NY | 1,932 | $50,966 | 7.9% |
| King Arthur Park, MT | 1,933 | $86,953 | 57.2% |
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