Half Moon Bay city, California
Official LSAD Designation: Half Moon Bay city • Census GEOID: 0631708
• San Mateo County
Demographics & Population Profile
Population and demographics for Half Moon Bay city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 11,287 | — | 2025 | Census |
| Median Age | 47.4 yrs | ±4 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 4,068 | ±313 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).