Eureka city, California
Official LSAD Designation: Eureka city • Census GEOID: 0623042
• Humboldt County
Demographics & Population Profile
Population and demographics for Eureka city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 25,304 | — | 2025 | Census |
| Median Age | 39.1 yrs | ±1.8 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 10,392 | ±498 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).