Clayton, CA ZIP Codes & Directory
Clayton is located in Contra Costa County in California. Browse all active 5-digit USPS ZIP codes serving Clayton and surrounding Contra Costa County delivery districts.
All ZIP Codes in Clayton, CA
1 CodesAbout Clayton Mail Delivery & Postal Administration
ZIP codes in Clayton are administered by the United States Postal Service. Delivery routes are coordinated through regional Sectional Center Facilities (SCFs) servicing Contra Costa County and surrounding California metropolitan districts.
Frequently Asked Questions About Clayton, CA ZIP Codes
How many ZIP codes serve Clayton, California? ▾
Clayton, California is served by 1 active USPS postal delivery codes: 94517.
What county is Clayton located in? ▾
Clayton is an incorporated city located within Contra Costa County, California.
What is the population and demographic size of Clayton? ▾
According to official U.S. Census Bureau data, Clayton has an estimated population of 12,525 residents and is situated within the undefined.
How does mail sorting and delivery work in Clayton? ▾
Mail delivery in Clayton is operated by the United States Postal Service (USPS) through regional Sectional Center Facility (SCF) distribution plants servicing Contra Costa County and surrounding California counties.
How much does it cost to ship a package to Clayton, CA? ▾
Shipping costs to Clayton 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 Clayton? ▾
Standard USPS Ground Advantage typically takes 2-5 business days to reach Clayton, depending on the origin. Priority Mail generally arrives in 1-3 business days. Please check tracking for specific regional routing times.