Whitethorn, CA ZIP Codes & Directory
Whitethorn is located in Humboldt County in California. Browse all active 5-digit USPS ZIP codes serving Whitethorn and surrounding Humboldt County delivery districts.
All ZIP Codes in Whitethorn, CA
1 CodesAbout Whitethorn Mail Delivery & Postal Administration
ZIP codes in Whitethorn are administered by the United States Postal Service. Delivery routes are coordinated through regional Sectional Center Facilities (SCFs) servicing Humboldt County and surrounding California metropolitan districts.
Frequently Asked Questions About Whitethorn, CA ZIP Codes
How many ZIP codes serve Whitethorn, California? ▾
Whitethorn, California is served by 1 active USPS postal delivery codes: 95589.
What county is Whitethorn located in? ▾
Whitethorn is an incorporated city located within Humboldt County, California.
What is the population and demographic size of Whitethorn? ▾
According to official U.S. Census Bureau data, Whitethorn has an estimated population of 1,648 residents and is situated within the undefined.
How does mail sorting and delivery work in Whitethorn? ▾
Mail delivery in Whitethorn is operated by the United States Postal Service (USPS) through regional Sectional Center Facility (SCF) distribution plants servicing Humboldt County and surrounding California counties.
How much does it cost to ship a package to Whitethorn, CA? ▾
Shipping costs to Whitethorn depend on the package weight, dimensions, shipping carrier (USPS, UPS, FedEx), and the distance from the origin ZIP code. To calculate exact postage rates, use our shipping cost estimator tool.
What is the standard delivery time for mail to Whitethorn? ▾
Standard USPS Ground Advantage typically takes 2-5 business days to reach Whitethorn, depending on the origin. Priority Mail generally arrives in 1-3 business days. Please check tracking for specific regional routing times.