Janesville, CA ZIP Codes & Directory
Janesville is located in Lassen County in California. Browse all active 5-digit USPS ZIP codes serving Janesville and surrounding Lassen County delivery districts.
All ZIP Codes in Janesville, CA
1 CodesAbout Janesville Mail Delivery & Postal Administration
ZIP codes in Janesville are administered by the United States Postal Service. Delivery routes are coordinated through regional Sectional Center Facilities (SCFs) servicing Lassen County and surrounding California metropolitan districts.
Frequently Asked Questions About Janesville, CA ZIP Codes
How many ZIP codes serve Janesville, California? ▾
Janesville, California is served by 1 active USPS postal delivery codes: 96114.
What county is Janesville located in? ▾
Janesville is an incorporated city located within Lassen County, California.
What is the population and demographic size of Janesville? ▾
According to official U.S. Census Bureau data, Janesville has an estimated population of 3,101 residents and is situated within the undefined.
How does mail sorting and delivery work in Janesville? ▾
Mail delivery in Janesville is operated by the United States Postal Service (USPS) through regional Sectional Center Facility (SCF) distribution plants servicing Lassen County and surrounding California counties.
How much does it cost to ship a package to Janesville, CA? ▾
Shipping costs to Janesville 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 Janesville? ▾
Standard USPS Ground Advantage typically takes 2-5 business days to reach Janesville, depending on the origin. Priority Mail generally arrives in 1-3 business days. Please check tracking for specific regional routing times.