Statistics for St. Charles County
Latest official figures for St. Charles County, each linked to its source.
Demography
| Population | 426,499 persons | 2025 |
| Median age | 39.8 years | 2024 |
| Live births, July to June | 3,927 count | 2025 |
| Deaths, July to June | 3,535 count | 2025 |
| Crude birth rate, July to June | 9.25 per 1,000 inhabitants | 2025 |
| Crude death rate, July to June | 8.33 per 1,000 inhabitants | 2025 |
Labor market
| Unemployment rate | 3.3 % | 2026-08 |
Income and living conditions
| Poverty rate (US official measure) | 6.3 % | 2024 |
| Median household income | 104,692 USD | 2024 |
Economy
| Gross domestic product (GDP), US dollars | 26,419 USD million | 2024 |
| Real GDP growth | 3.1 % | 2024 |