Altadena, CA ZIP Codes & Directory
Altadena is located in Los Angeles County in California. Browse all active 5-digit USPS ZIP codes serving Altadena and surrounding Los Angeles County delivery districts.
All ZIP Codes in Altadena, CA
1 CodesAbout Altadena Mail Delivery & Postal Administration
ZIP codes in Altadena are administered by the United States Postal Service. Delivery routes are coordinated through regional Sectional Center Facilities (SCFs) servicing Los Angeles County and surrounding California metropolitan districts.
Frequently Asked Questions About Altadena, CA ZIP Codes
How many ZIP codes serve Altadena, California? ▾
Altadena, California is served by 1 active USPS postal delivery codes: 91001.
What county is Altadena located in? ▾
Altadena is an incorporated city located within Los Angeles County, California.
What is the population and demographic size of Altadena? ▾
According to official U.S. Census Bureau data, Altadena has an estimated population of 36,578 residents and is situated within the undefined.
How does mail sorting and delivery work in Altadena? ▾
Mail delivery in Altadena is operated by the United States Postal Service (USPS) through regional Sectional Center Facility (SCF) distribution plants servicing Los Angeles County and surrounding California counties.
How much does it cost to ship a package to Altadena, CA? ▾
Shipping costs to Altadena 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 Altadena? ▾
Standard USPS Ground Advantage typically takes 2-5 business days to reach Altadena, depending on the origin. Priority Mail generally arrives in 1-3 business days. Please check tracking for specific regional routing times.