San Quentin, CA ZIP Codes & Directory
San Quentin is located in Marin County in California. Browse all active 5-digit USPS ZIP codes serving San Quentin and surrounding Marin County delivery districts.
All ZIP Codes in San Quentin, CA
1 CodesAbout San Quentin Mail Delivery & Postal Administration
ZIP codes in San Quentin are administered by the United States Postal Service. Delivery routes are coordinated through regional Sectional Center Facilities (SCFs) servicing Marin County and surrounding California metropolitan districts.
Frequently Asked Questions About San Quentin, CA ZIP Codes
How many ZIP codes serve San Quentin, California? ▾
San Quentin, California is served by 1 active USPS postal delivery codes: 94974.
What county is San Quentin located in? ▾
San Quentin is an incorporated city located within Marin County, California.
What is the population and demographic size of San Quentin? ▾
According to official U.S. Census Bureau data, San Quentin has an estimated population of 0 residents and is situated within the undefined.
How does mail sorting and delivery work in San Quentin? ▾
Mail delivery in San Quentin is operated by the United States Postal Service (USPS) through regional Sectional Center Facility (SCF) distribution plants servicing Marin County and surrounding California counties.
How much does it cost to ship a package to San Quentin, CA? ▾
Shipping costs to San Quentin 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 San Quentin? ▾
Standard USPS Ground Advantage typically takes 2-5 business days to reach San Quentin, depending on the origin. Priority Mail generally arrives in 1-3 business days. Please check tracking for specific regional routing times.