Eureka, California

3 ZIP codes · Pacific time

ZIP codes (largest first)

95503 · 25,05495501 · 22,89095502 (PO box)
Population26,010
StateCalifornia
CountyHumboldt County
Time zonePacific
Land area9.57 sq mi

Area codes in this area

369707

These are the area codes that most often serve Eureka (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

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Population: U.S. Census Bureau, ACS 5-year estimates, 2024.