| Index | Lake St. Louis | Missouri | National |
| Income per capita | $70,701 | $39,715 | $44,883 |
| Median household income | $147,806 | $72,613 | $81,333 |
| Median income owner occupied | $160,662 | $90,986 | $106,172 |
| Median income renter occupied | $98,859 | $45,210 | $52,080 |
| Median earnings male | $86,758 | $52,324 | $54,343 |
| Median earnings female | $61,269 | $36,971 | $38,439 |
| Unemployment rate | 2.8% | 4.4% | 4.9% |
| 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 | 2,697 | $312,556 | 284.3% |
| Weldon Spring Heights, MO | 122 | $221,672 | 172.5% |
| Innsbrook, MO | 869 | $210,335 | 158.6% |
| Wildwood, MO | 36,455 | $202,820 | 149.4% |
| Dardenne Prairie, MO | 13,884 | $200,259 | 146.2% |
| Lake St. Louis, MO | 16,749 | $147,806 | 81.7% |
| City | Population | Household Income | National Avg. |
| Fort Hunt, VA | 16,749 | $281,468 | 246.1% |
| Hernando, MS | 16,752 | $100,121 | 23.1% |
| Uvalde, TX | 16,753 | $62,381 | 23.3% |
| Rio Linda, CA | 16,757 | $105,810 | 30.1% |
| Kaukauna, WI | 16,758 | $97,071 | 19.4% |
| Lake St. Louis, MO | 16,749 | $147,806 | 81.7% |