Sunnyvale city, California
Official LSAD Designation: Sunnyvale city • Census GEOID: 0677000
• Santa Clara County
Demographics & Population Profile
Population and demographics for Sunnyvale city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 156,577 | — | 2025 | Census |
| Median Age | 35.2 yrs | ±0.6 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 60,293 | ±1,051 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).