Humboldt County ZIP Codes (95501 – 95573) – California

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Humboldt County is located in the far northwestern part of California, United States, along the Pacific Coast. The county includes coastal cities, forested communities, river valleys, rural towns, and remote mountain areas. ZIP codes in Humboldt County range from 95501 to 95573 and are assigned by the United States Postal Service (USPS) for accurate mail delivery and location identification.

Key Information About Humboldt County ZIP Codes

ItemDetails
CountyHumboldt County
StateCalifornia
ZIP Code Range95501 – 95573
County SeatEureka
Largest CityEureka
CountryUnited States
ContinentNorth America
Postal AuthorityUnited States Postal Service (USPS)

ZIP Codes of Humboldt County by City & Community

For more details on ZIP codes in Humboldt County, see the tables of cities, towns, communities, and notable neighborhoods below.

Eureka Area (95501 – 95503)

Place / LocationZIP CodeState
Downtown Eureka95501California
Old Town Eureka95501California
Central Eureka95501California
North Eureka95503California
South Eureka95501California
East Eureka95503California
West Eureka95501California
Myrtletown95501California
Cutten95503California
Pine Hill95503California
Eureka Industrial Area95501California
Eureka Waterfront95501California

Arcata Area (95521)

Place / LocationZIP CodeState
Arcata Downtown95521California
Arcata North95521California
Arcata South95521California
Arcata East95521California
Arcata West95521California
Sunny Brae95521California
Valley West95521California
Jacoby Creek95521California
Arcata Bottoms95521California

McKinleyville Area (95519)

Place / LocationZIP CodeState
McKinleyville Central95519California
McKinleyville North95519California
McKinleyville South95519California
McKinleyville East95519California
McKinleyville West95519California
Azalea State Reserve Area95519California

Fortuna Area (95540)

Place / LocationZIP CodeState
Fortuna Downtown95540California
Fortuna North95540California
Fortuna South95540California
Fortuna East95540California
Fortuna West95540California
Rohnerville95540California
Strongs Creek Area95540California

Rio Dell & Scotia Area (95562 – 95565)

Place / LocationZIP CodeState
Rio Dell95562California
Scotia95565California
Rio Dell North95562California
Rio Dell South95562California
Eel River Valley Area95565California

Ferndale Area (95536)

Place / LocationZIP CodeState
Ferndale Central95536California
Ferndale North95536California
Ferndale South95536California
Ferndale East95536California
Ferndale West95536California
Centerville Beach Area95536California

Trinidad Area (95570)

Place / LocationZIP CodeState
Trinidad95570California
Trinidad North95570California
Trinidad South95570California
Trinidad East95570California
Trinidad West95570California
Trinidad Head Area95570California

Garberville & Redway Area (95542 – 95560)

Place / LocationZIP CodeState
Garberville95542California
Redway95560California
Benbow95542California
Benbow Lake Area95542California
Southern Humboldt Area95560California

Willow Creek Area (95573)

Place / LocationZIP CodeState
Willow Creek95573California
Willow Creek North95573California
Willow Creek South95573California
Willow Creek East95573California
Willow Creek West95573California
Trinity River Area95573California

Hoopa & Eastern Humboldt Area (95546)

Place / LocationZIP CodeState
Hoopa95546California
Hoopa Valley95546California
Hoopa North95546California
Hoopa South95546California
Hoopa Tribal Area95546California

Northern & Rural Humboldt County Areas (95548 – 95549 – 95552)

Place / LocationZIP CodeState
Orick95555California
Weott95571California
Honeydew95545California
Petrolia95558California
Alderpoint95511California
Kneeland95549California
Freshwater95503California

About Humboldt County ZIP Codes

Humboldt County ZIP codes cover cities, towns, forests, and rural land.
Some ZIP codes serve busy coastal areas. Others cover remote valleys and mountains.

Larger towns use more than one ZIP code. Smaller communities share nearby codes.
Using the correct ZIP code helps mail arrive on time and supports deliveries and services.