Atherton, CA ZIP Codes & Directory
Atherton is located in San Mateo County in California. Browse all active 5-digit USPS ZIP codes serving Atherton and surrounding San Mateo County delivery districts.
All ZIP Codes in Atherton, CA
1 CodesAbout Atherton Mail Delivery & Postal Administration
ZIP codes in Atherton are administered by the United States Postal Service. Delivery routes are coordinated through regional Sectional Center Facilities (SCFs) servicing San Mateo County and surrounding California metropolitan districts.
Frequently Asked Questions About Atherton, CA ZIP Codes
How many ZIP codes serve Atherton, California? ▾
Atherton, California is served by 1 active USPS postal delivery codes: 94027.
What county is Atherton located in? ▾
Atherton is an incorporated city located within San Mateo County, California.
What is the population and demographic size of Atherton? ▾
According to official U.S. Census Bureau data, Atherton has an estimated population of 7,270 residents and is situated within the undefined.
How does mail sorting and delivery work in Atherton? ▾
Mail delivery in Atherton is operated by the United States Postal Service (USPS) through regional Sectional Center Facility (SCF) distribution plants servicing San Mateo County and surrounding California counties.
How much does it cost to ship a package to Atherton, CA? ▾
Shipping costs to Atherton 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 Atherton? ▾
Standard USPS Ground Advantage typically takes 2-5 business days to reach Atherton, depending on the origin. Priority Mail generally arrives in 1-3 business days. Please check tracking for specific regional routing times.