| Index | St. Charles | Iowa | National |
| Income per capita | $48,134 | $42,672 | $44,883 |
| Median household income | $115,203 | $81,387 | $81,333 |
| Median income owner occupied | $125,610 | $98,724 | $106,172 |
| Median income renter occupied | $85,101 | $45,890 | $52,080 |
| Median earnings male | $70,740 | $54,047 | $54,343 |
| Median earnings female | $52,540 | $36,462 | $38,439 |
| Unemployment rate | 0.5% | 3.2% | 4.9% |
| Poverty level | 6.2% | 12.3% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 27.5% | 27.5% |
| Manufacturing sector | 14.9% | 14.9% |
| Financial & insurance services | 5.4% | 5.4% |
| Wholesale & retail services | 19.4% | 19.4% |
| Public administration | 2.7% | 2.7% |
| Transportation, warehousing & utilities | 13.5% | 13.5% |
| Education, health & social services | 5.9% | 5.9% |
| Other | 8.6% | 8.6% |
| City | Population | Household Income | National Avg. |
| Bevington, IA | 28 | $181,154 | 122.7% |
| Cumming, IA | 550 | $149,625 | 84.0% |
| Norwalk, IA | 11,804 | $122,496 | 50.6% |
| St. Marys, IA | 188 | $103,661 | 27.5% |
| New Virginia, IA | 467 | $101,655 | 25.0% |
| St. Charles, IA | 813 | $115,203 | 41.6% |
| City | Population | Household Income | National Avg. |
| Meadow Vale, KY | 813 | $129,163 | 58.8% |
| Paraje, NM | 813 | $36,074 | 55.6% |
| Belle Terre, NY | 813 | $304,762 | 274.7% |
| Mount Vernon, OR | 813 | $81,824 | 0.6% |
| Mountainaire, AZ | 812 | $118,583 | 45.8% |
| St. Charles, IA | 813 | $115,203 | 41.6% |