There are 35 zip codes in Humboldt County, California. The most populated is 95503, located in Eureka. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
9550324,072Eureka
9550123,706Eureka
9552121,712Arcata
9551918,781Mckinleyville
9554014,415Fortuna
955623,396Rio Dell
955363,258Ferndale
955422,862Garberville
955462,666Hoopa
955702,523Trinidad
955511,789Loleta
955241,700Bayside
955281,555Carlotta
955731,417Willow Creek
955251,358Blue Lake
955601,337Redway
955891,153Whitethorn
955491,140Kneeland
955471,121Hydesville
955531,037Miranda
95565860Scotia
95556692Orleans
95526638Bridgeville
95537629Fields Landing
95564564Samoa
95545492Honeydew
95555370Orick
95554313Myers Flat
95558246Petrolia
95550213Korbel
95514117Blocksburg
95511102Alderpoint
9556991Redcrest
9557130Weott
95559Phillipsville
showing: 35 rows

Zip Codes in Humboldt County, California by Population (2024)