| Index | St. John | Missouri | National |
| Income per capita | $42,891 | $39,715 | $44,883 |
| Median household income | $80,760 | $72,613 | $81,333 |
| Median income owner occupied | $93,241 | $90,986 | $106,172 |
| Median income renter occupied | $72,072 | $45,210 | $52,080 |
| Median earnings male | $45,716 | $52,324 | $54,343 |
| Median earnings female | $41,110 | $36,971 | $38,439 |
| Unemployment rate | 4.0% | 4.4% | 4.9% |
| Poverty level | 11.5% | 15.3% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 11.5% | 11.5% |
| Manufacturing sector | 8.4% | 8.4% |
| Financial & insurance services | 2.4% | 2.4% |
| Wholesale & retail services | 17.1% | 17.1% |
| Public administration | 0.5% | 0.5% |
| Transportation, warehousing & utilities | 17.7% | 17.7% |
| Education, health & social services | 7.2% | 7.2% |
| Other | 31.0% | 31.0% |
| City | Population | Household Income | National Avg. |
| Westwood, MO | 321 | $368,561 | 353.2% |
| Ladue, MO | 8,903 | $368,480 | 353.1% |
| Huntleigh, MO | 463 | $365,824 | 349.8% |
| Country Life Acres, MO | 54 | $365,640 | 349.6% |
| Clarkson Valley, MO | 2,697 | $312,556 | 284.3% |
| St. John, MO | 6,577 | $80,760 | 0.7% |
| City | Population | Household Income | National Avg. |
| Village of Oak Creek (Big Park), AZ | 6,577 | $101,449 | 24.7% |
| Champion Heights, OH | 6,577 | $90,284 | 11.0% |
| Laurel Bay, SC | 6,577 | $74,567 | 8.3% |
| Bridge City, LA | 6,575 | $55,440 | 31.8% |
| Douglas, WY | 6,574 | $104,516 | 28.5% |
| St. John, MO | 6,577 | $80,760 | 0.7% |