Statistics for Fairfax County
Latest official figures for Fairfax County, each linked to its source.
Demography
| Population | 1,167,873 persons | 2025 |
| Median age | 39.1 years | 2024 |
| Live births, July to June | 12,104 count | 2025 |
| Deaths, July to June | 5,870 count | 2025 |
| Crude birth rate, July to June | 10.4 per 1,000 inhabitants | 2025 |
| Crude death rate, July to June | 5.04 per 1,000 inhabitants | 2025 |
Labor market
| Unemployment rate | 3.3 % | 2026-08 |
Income and living conditions
| Poverty rate (US official measure) | 6 % | 2024 |
| Median household income | 153,637 USD | 2024 |