San Carlos, CA ZIP Codes & Directory
San Carlos is located in San Mateo County in California. Browse all active 5-digit USPS ZIP codes serving San Carlos and surrounding San Mateo County delivery districts.
All ZIP Codes in San Carlos, CA
1 CodesAbout San Carlos Mail Delivery & Postal Administration
ZIP codes in San Carlos 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 San Carlos, CA ZIP Codes
How many ZIP codes serve San Carlos, California? ▾
San Carlos, California is served by 1 active USPS postal delivery codes: 94070.
What county is San Carlos located in? ▾
San Carlos is an incorporated city located within San Mateo County, California.
What is the population and demographic size of San Carlos? ▾
According to official U.S. Census Bureau data, San Carlos has an estimated population of 31,585 residents and is situated within the undefined.
How does mail sorting and delivery work in San Carlos? ▾
Mail delivery in San Carlos 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 San Carlos, CA? ▾
Shipping costs to San Carlos 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 Carlos? ▾
Standard USPS Ground Advantage typically takes 2-5 business days to reach San Carlos, depending on the origin. Priority Mail generally arrives in 1-3 business days. Please check tracking for specific regional routing times.