ZIP Code 91310 – Castaic, California | ZipsCode.us
Home / California ZIP Codes / ZIP Code 91310
ZIP Code 91310
Castaic, California · Los Angeles
ZIP code 91310 belongs to the city of Castaic in California (Los Angeles). See all California ZIP Codes.
ZIP code 91310 belongs to Castaic, California, in Los Angeles. If you are mailing a letter or package to this area, use Castaic, CA 91310 in the address. On this page you will find the city and county for 91310, nearby ZIP codes in the same county, and free tools to look up any address in this ZIP code.
What City Is ZIP Code 91310?
The city for ZIP code 91310 is Castaic, California. When you write an address in this area, the correct format is: Name, Street Address, Castaic, CA 91310.
ZIP Code 91310 County and State
ZIP code 91310 is located in Los Angeles, California. For a complete list of cities and ZIP codes across the state, see the California ZIP Codes page.
Nearby ZIP Codes in Los Angeles
These ZIP codes are in the same county as 91310:
ZIP Code 91310 on the Map
The map below shows the approximate center of ZIP code 91310, near Castaic, California. You can zoom in and drag the map to explore the area.
Map center is approximate (ZIP area center, around 34.4889, -118.6229). Map data © OpenStreetMap.
Find an Address in ZIP Code 91310
Need the full ZIP+4 code for a specific street address in Castaic? Use the free ZIP+4 Lookup tool, or find any ZIP code from a street address with the ZIP Code by Address tool.
Frequently Asked Questions
What city is ZIP code 91310?
ZIP code 91310 is for Castaic, California.
What county is ZIP code 91310 in?
ZIP code 91310 is in Los Angeles, California.
What state is ZIP code 91310 in?
ZIP code 91310 is in California (CA).
How do I find the ZIP+4 for an address in 91310?
Use the free ZIP+4 Lookup tool with the full street address to get the complete 9-digit ZIP code.
What are the nearby ZIP codes to 91310?
Nearby ZIP codes include 90001 (Los Angeles), 90002 (Los Angeles), 90003 (Los Angeles), 90004 (Los Angeles), 90005 (Los Angeles).
Related ZIP Code Tools
Find the ZIP code for any U.S. street address.
See which city and county any ZIP code belongs to.
Get the full 9-digit ZIP code for precise delivery.
Track packages sent to or from any U.S. address.
Search any U.S. ZIP code, city or address — free.