Statistics for St. Clair County
Latest official figures for St. Clair County, each linked to its source.
Demography
| Population | 250,708 persons | 2025 |
| Median age | 39.9 years | 2024 |
| Live births, July to June | 2,187 count | 2025 |
| Deaths, July to June | 2,688 count | 2025 |
| Crude birth rate, July to June | 8.71 per 1,000 inhabitants | 2025 |
| Crude death rate, July to June | 10.71 per 1,000 inhabitants | 2025 |
Labor market
| Unemployment rate | 3.9 % | 2026-08 |
Income and living conditions
| Poverty rate (US official measure) | 12.7 % | 2024 |
| Median household income | 73,854 USD | 2024 |
Economy
| Gross domestic product (GDP), US dollars | 16,131.4 USD million | 2024 |
| Real GDP growth | 1.1 % | 2024 |