| Index | King Arthur Park | Montana | National |
| Income per capita | $45,111 | $39,875 | $44,883 |
| Median household income | $129,105 | $71,326 | $81,333 |
| Median income owner occupied | $157,585 | $88,680 | $106,172 |
| Median income renter occupied | $0 | $45,249 | $52,080 |
| Median earnings male | $60,372 | $47,130 | $54,343 |
| Median earnings female | $61,141 | $32,153 | $38,439 |
| Unemployment rate | 0.0% | 3.8% | 4.9% |
| 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 | 203 | $157,867 | 94.1% |
| Four Corners, MT | 4,989 | $114,170 | 40.4% |
| Amsterdam, MT | 173 | $106,618 | 31.1% |
| Churchill, MT | 1,009 | $102,694 | 26.3% |
| Belgrade, MT | 9,499 | $93,865 | 15.4% |
| King Arthur Park, MT | 2,008 | $129,105 | 58.7% |
| City | Population | Household Income | National Avg. |
| Gordon, GA | 2,008 | $53,478 | 34.2% |
| Malad City, ID | 2,008 | $78,574 | 3.4% |
| Clifton Springs, NY | 2,008 | $73,228 | 10.0% |
| Terrasse-Vaudreuil, QC | 2,008 | n/a | |
| Porterdale, GA | 2,009 | $33,546 | 58.8% |
| King Arthur Park, MT | 2,008 | $129,105 | 58.7% |