Atascadero city, California
Official LSAD Designation: Atascadero city • Census GEOID: 0603064
• San Luis Obispo County
Demographics & Population Profile
Population and demographics for Atascadero city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 29,464 | — | 2025 | Census |
| Median Age | 40.4 yrs | ±1.7 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 11,579 | ±397 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).