ZIP codes in Humboldt County
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- 95501 EurekaHumboldt County
- 95503 EurekaHumboldt County
- 95511 AlderpointHumboldt County
- 95514 BlocksburgHumboldt County
- 95519 ArcataHumboldt County
- 95521 ArcataHumboldt County
- 95524 BaysideHumboldt County
- 95525 Blue LakeHumboldt County
- 95526 BridgevilleHumboldt County
- 95528 CarlottaHumboldt County
- 95536 FerndaleHumboldt County
- 95537 Fields LandingHumboldt County
- 95540 FortunaHumboldt County
- 95542 GarbervilleHumboldt County
- 95545 HoneydewHumboldt County
- 95546 HoopaHumboldt County
- 95547 HydesvilleHumboldt County
- 95549 ArcataHumboldt County
- 95550 Blue LakeHumboldt County
- 95551 LoletaHumboldt County
- 95553 MirandaHumboldt County
- 95554 Myers FlatHumboldt County
- 95555 OrickHumboldt County
- 95556 OrleansHumboldt County
- 95558 PetroliaHumboldt County
- 95559 PhillipsvilleHumboldt County
- 95560 RedwayHumboldt County
- 95562 Rio DellHumboldt County
- 95564 ArcataHumboldt County
- 95565 Rio DellHumboldt County
- 95569 RedcrestHumboldt County
- 95570 TrinidadHumboldt County
- 95571 WeottHumboldt County
- 95573 Willow CreekHumboldt County
- 95589 WhitethornHumboldt County