Statistics for Johnson County
Latest official figures for Johnson County, each linked to its source.
Demography
| Population | 636,906 persons | 2025 |
| Median age | 38.6 years | 2024 |
| Live births, July to June | 6,887 count | 2025 |
| Deaths, July to June | 4,708 count | 2025 |
| Crude birth rate, July to June | 10.87 per 1,000 inhabitants | 2025 |
| Crude death rate, July to June | 7.43 per 1,000 inhabitants | 2025 |
Labor market
| Unemployment rate | 4.1 % | 2026-08 |
Income and living conditions
| Poverty rate (US official measure) | 6 % | 2024 |
| Median household income | 109,208 USD | 2024 |
Economy
| Gross domestic product (GDP), US dollars | 67,012.2 USD million | 2024 |
| Real GDP growth | 0 % | 2024 |