Eureka city, California
Official LSAD Designation: Eureka city • Census GEOID: 0623042
• Humboldt County
Eureka city is an incorporated city in Humboldt County, California. According to official records from the Census (2025), Eureka city had an estimated population of 25,304 residents. Official Census Bureau geographic records classify this community under LSAD designation Eureka city (GEOID 0623042).
Local Government Administration U.S. Census Bureau GMAF
City Of Eureka
Municipal
Official Title:
City Clerk
Address:
531 K ST, EUREKA CA 95501-1165
County Of Humboldt
County
Official Title:
Senior Administrative Analyst Traine
Address:
825 5TH ST, RM 111, EUREKA CA 95501-1169
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 25,304 | 2025 |
| Median Household Income | $57,662 | 2020-2024 |
| Median Home Value | $404,500 | 2020-2024 |
| Land Area | 9.57 sq mi | Gazetteer (2026) |
| Civic & Public Services | Hospitals, Libraries, Colleges | CMS / IMLS / IPEDS |
| Schools & Districts | NCES Directory Listings | Provided by k12guides.com |
| Nearby Airports | Landing Facilities | Provided by airport-data.com |
| Climate & Weather | NOAA 30-Year Normals | 1991–2020 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).