Statistics for Jefferson County
Latest official figures for Jefferson County, each linked to its source.
Demography
| Population | 665,742 persons | 2025 |
| Median age | 37.7 years | 2024 |
| Live births, July to June | 7,978 count | 2025 |
| Deaths, July to June | 7,655 count | 2025 |
| Crude birth rate, July to June | 11.98 per 1,000 inhabitants | 2025 |
| Crude death rate, July to June | 11.49 per 1,000 inhabitants | 2025 |
Labor market
| Unemployment rate | 3.8 % | 2026-08 |
Income and living conditions
| Poverty rate (US official measure) | 14.2 % | 2024 |
| Median household income | 66,388 USD | 2024 |
Economy
| Gross domestic product (GDP), US dollars | 65,539.2 USD million | 2024 |
| Real GDP growth | 1.4 % | 2024 |