Oakley, CA ZIP Codes & Directory
Oakley is located in Contra Costa County in California. Browse all active 5-digit USPS ZIP codes serving Oakley and surrounding Contra Costa County delivery districts.
All ZIP Codes in Oakley, CA
1 CodesAbout Oakley Mail Delivery & Postal Administration
ZIP codes in Oakley 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 Oakley, CA ZIP Codes
How many ZIP codes serve Oakley, California? ▾
Oakley, California is served by 1 active USPS postal delivery codes: 94561.
What county is Oakley located in? ▾
Oakley is an incorporated city located within Contra Costa County, California.
What is the population and demographic size of Oakley? ▾
According to official U.S. Census Bureau data, Oakley has an estimated population of 44,545 residents and is situated within the undefined.
How does mail sorting and delivery work in Oakley? ▾
Mail delivery in Oakley 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 Oakley, CA? ▾
Shipping costs to Oakley 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 Oakley? ▾
Standard USPS Ground Advantage typically takes 2-5 business days to reach Oakley, depending on the origin. Priority Mail generally arrives in 1-3 business days. Please check tracking for specific regional routing times.