Petrolia, CA ZIP Codes & Directory
Petrolia is located in Humboldt County in California. Browse all active 5-digit USPS ZIP codes serving Petrolia and surrounding Humboldt County delivery districts.
All ZIP Codes in Petrolia, CA
1 CodesAbout Petrolia Mail Delivery & Postal Administration
ZIP codes in Petrolia 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 Petrolia, CA ZIP Codes
How many ZIP codes serve Petrolia, California? ▾
Petrolia, California is served by 1 active USPS postal delivery codes: 95558.
What county is Petrolia located in? ▾
Petrolia is an incorporated city located within Humboldt County, California.
What is the population and demographic size of Petrolia? ▾
According to official U.S. Census Bureau data, Petrolia has an estimated population of 548 residents and is situated within the undefined.
How does mail sorting and delivery work in Petrolia? ▾
Mail delivery in Petrolia 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 Petrolia, CA? ▾
Shipping costs to Petrolia 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 Petrolia? ▾
Standard USPS Ground Advantage typically takes 2-5 business days to reach Petrolia, depending on the origin. Priority Mail generally arrives in 1-3 business days. Please check tracking for specific regional routing times.