Simi Valley city, California
Official LSAD Designation: Simi Valley city • Census GEOID: 0672016
• Ventura County
Demographics & Population Profile
Population and demographics for Simi Valley city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 124,861 | — | 2025 | Census |
| Median Age | 41.9 yrs | ±0.7 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 44,457 | ±798 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).