Census place · GEOID 0623042 · Humboldt County
Eureka, CA ZIP codes
5 ZIP/ZCTAs intersecting this Census place in Humboldt County.
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: Census place Eureka (GEOID 0623042). Methodology
Combined population of ZIP/ZCTAs intersecting this place: 71,380 (5 ZIPs).
Combined population of ZIP/ZCTAs intersecting this place. Each intersecting ZIP contributes its full ZCTA population; overlap percents are descriptive only. This is not the Census place ACS headline above. Methodology
Map of Eureka, CA

ZIP/ZCTA overlap with Eureka
Population overlap
Share of each ZIP/ZCTA’s population located within Eureka, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.
ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
ZIP codes intersecting Eureka
| ZIP | City | County | Population | Income |
|---|---|---|---|---|
| 95501 | Eureka | Humboldt County | 22,972 | $55,076 |
| 95503 | Eureka | Humboldt County | 24,442 | $76,708 |
| 95521 | Arcata | Humboldt County | 21,684 | $54,324 |
| 95524 | Bayside | Humboldt County | 1,770 | $82,697 |
| 95537 | Fields Landing | Humboldt County | 512 | $76,116 |
USPS associates these ZIPs with Eureka
These codes list Eureka as a primary or acceptable city. They are not used for the ACS headline.
| ZIP | City | County | Population | Income |
|---|---|---|---|---|
| 95502 | Eureka | Humboldt County | 3,179 | — |
| 95534 | Cutten | Humboldt County | 385 | — |