| Index | Lake St. Louis | Missouri | National |
| Income per capita | $46,974 | $27,044 | $29,829 |
| Median household income | $100,122 | $49,593 | $55,322 |
| Median income owner occupied | $110,016 | $62,242 | $70,586 |
| Median income renter occupied | $65,966 | $30,016 | $35,192 |
| Median earnings male | $58,692 | $34,901 | $36,919 |
| Median earnings female | $40,932 | $24,771 | $26,250 |
| Unemployment rate | 2.6% | 4.1% | 4.7% |
| Poverty level | 3.9% | 15.3% | 15.1% |
| Labour Type | Male | Female |
| Construction industry | 9.6% | 9.6% |
| Manufacturing sector | 15.0% | 15.0% |
| Financial & insurance services | 9.0% | 9.0% |
| Wholesale & retail services | 26.6% | 26.6% |
| Public administration | 4.3% | 4.3% |
| Transportation, warehousing & utilities | 5.5% | 5.5% |
| Education, health & social services | 7.3% | 7.3% |
| Other | 22.0% | 22.0% |
| City | Population | Household Income | National Avg. |
| Clarkson Valley, MO | 2,619 | $208,000 | 276.0% |
| Weldon Spring Heights, MO | 120 | $147,083 | 165.9% |
| Innsbrook, MO | 843 | $143,500 | 159.4% |
| Wildwood, MO | 35,476 | $135,177 | 144.3% |
| Dardenne Prairie, MO | 13,385 | $134,267 | 142.7% |
| Lake St. Louis, MO | 16,357 | $100,122 | 81.0% |
| City | Population | Household Income | National Avg. |
| Heber, UT | 16,362 | $80,417 | 45.4% |
| Adelphi, MD | 16,364 | $68,516 | 23.8% |
| Red Wing, MN | 16,366 | $57,056 | 3.1% |
| Cañon City, CO | 16,369 | $49,963 | 9.7% |
| Dyersburg, TN | 16,371 | $41,724 | 24.6% |
| Lake St. Louis, MO | 16,357 | $100,122 | 81.0% |
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