Fairfax city, Virginia
Official LSAD Designation: Fairfax city • Census GEOID: 5126496
• Fairfax city
Demographics & Population Profile
Population and demographics for Fairfax city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 26,772 | — | 2025 | Census |
| Median Age | 36.6 yrs | ±0.9 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 9,155 | ±117 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).