Saint Helena, CA ZIP Codes & Directory
Saint Helena is located in Napa County in California. Browse all active 5-digit USPS ZIP codes serving Saint Helena and surrounding Napa County delivery districts.
All ZIP Codes in Saint Helena, CA
1 CodesAbout Saint Helena Mail Delivery & Postal Administration
ZIP codes in Saint Helena are administered by the United States Postal Service. Delivery routes are coordinated through regional Sectional Center Facilities (SCFs) servicing Napa County and surrounding California metropolitan districts.
Frequently Asked Questions About Saint Helena, CA ZIP Codes
How many ZIP codes serve Saint Helena, California? ▾
Saint Helena, California is served by 1 active USPS postal delivery codes: 94574.
What county is Saint Helena located in? ▾
Saint Helena is an incorporated city located within Napa County, California.
What is the population and demographic size of Saint Helena? ▾
According to official U.S. Census Bureau data, Saint Helena has an estimated population of 8,317 residents and is situated within the undefined.
How does mail sorting and delivery work in Saint Helena? ▾
Mail delivery in Saint Helena is operated by the United States Postal Service (USPS) through regional Sectional Center Facility (SCF) distribution plants servicing Napa County and surrounding California counties.
How much does it cost to ship a package to Saint Helena, CA? ▾
Shipping costs to Saint Helena 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 Saint Helena? ▾
Standard USPS Ground Advantage typically takes 2-5 business days to reach Saint Helena, depending on the origin. Priority Mail generally arrives in 1-3 business days. Please check tracking for specific regional routing times.