Castaic ZIP Code Finder by Area and Number California

The Castaic zip code is 91384 in California helps people find the correct mailing location for homes, businesses, and services in Castaic.

Welcome to our complete guide for Castaic, California ZIP Codes. Whether you're moving to Castaic, sending mail, searching for an address, or looking for local postal information, this page provides everything you need to know about the ZIP Codes serving Castaic, California.

Every Castaic ZIP Code is assigned by the United States Postal Service (USPS) to support efficient mail delivery and address identification. In addition to postal services, Castaic ZIP Codes are widely used for online shopping, navigation, banking, insurance, healthcare, business operations, and government services.

City	Castaic
Zip Code	91384
State	California
County	Los Angeles
Population	27,278
Latitude	34.51604
Longitude	-118.67289
Time Zone	America/Los_Angeles

The Castaic California zip code is used by USPS for mail delivery, shipping, and address identification across Castaic and nearby California cities.

Castaic California is a growing city in California, and many people search for the Castaic zip code, Castaic postal code, Castaic CA zip code, and Castaic California mailing code when sending mail or locating addresses. The zip code in Castaic is important for deliveries, online orders, location searches, and business listings in Castaic.

If you are searching for the Castaic zip code list, Castaic CA postal code, Castaic California city zip code, or Castaic mailing zip code, this page helps you quickly find the correct Castaic zip code. Many residents, travelers, and businesses use the Castaic zip code lookup to confirm the correct Castaic mailing address.

The Castaic zip code area covers neighborhoods, residential communities, and business locations in Castaic CA. Whether you are looking for the Castaic city zip code, Castaic California postal code, Castaic CA mailing code, or Castaic location zip code, the Castaic zip code California helps identify the correct postal region in California.

People also search for zip codes near Castaic, Castaic postal codes, Castaic CA zip code lookup, Castaic address zip code, and Castaic California USPS zip code to find nearby locations in California.

ZIP Codes in Castaic

The following ZIP Codes serve Castaic, California.

ZIP Code	County	Population	Time Zone
91384	Los Angeles	27,278	America/Los_Angeles

Whether you're searching for a residential, commercial, or mailing address, the ZIP Code list above makes it easy to find the correct postal code for Castaic.

About Castaic, California

Castaic is located in Los Angeles County, California, and is served by one or more ZIP Codes assigned by USPS. Residents, businesses, and visitors rely on these ZIP Codes for mail delivery, package shipping, address verification, and location-based services.

Some cities have a single ZIP Code, while larger cities may have multiple ZIP Codes covering different neighborhoods or business districts.

If you're searching for a Castaic ZIP Code, this page provides the latest available information to help you find the correct postal code quickly.

Castaic ZIP Code Map

The Castaic ZIP Code map helps visitors understand the geographic coverage of ZIP Code areas throughout the city.

The map can help you:

Locate neighborhoods
Find nearby ZIP Codes
Explore surrounding communities
Plan travel routes
Understand delivery areas

Find a ZIP Code in Castaic

If you need to locate a ZIP Code within Castaic, you can search using:

Street address
Neighborhood
Business name
Landmark
USPS mailing address

Using the correct Castaic ZIP Code helps improve mail delivery, shipping accuracy, and address verification.

About Living in Castaic

Castaic, California is part of Los Angeles County and is home to approximately 27,278 residents. The city operates in the America/Los_Angeles time zone and is identified by the geographic coordinates 34.51604 latitude and -118.67289 longitude.

Residents enjoy access to local schools, businesses, public services, healthcare facilities, parks, and transportation networks. Whether you're relocating, visiting, or starting a business, knowing the correct ZIP Code helps simplify everyday tasks.

Common Uses of Castaic ZIP Codes

ZIP Codes in Castaic are commonly used for:

USPS mail delivery
Package shipping
Online shopping
Address verification
Banking
Insurance
Government services
Emergency services
Navigation
Real estate
Business operations
Delivery planning

Why Castaic ZIP Codes Matter

Using the correct Castaic ZIP Code offers several benefits.

For Residents

Faster mail delivery
Accurate online orders
Easier address verification
Better navigation

For Businesses

Shipping optimization
Customer management
Delivery planning
Local marketing

Frequently Asked Questions

Castaic is served by one or more ZIP Codes listed on this page.

Castaic is currently served by 1 ZIP Code. The number of ZIP Codes depends on the size of the city and USPS delivery routes.

Castaic is located in Los Angeles County.

Castaic is located in California.

The estimated population of Castaic is 27,278.

Castaic follows the America/Los_Angeles time zone.

Use your street address or browse the ZIP Code list available on this page.

No. Some ZIP Codes may include residential, commercial, government, or PO Box delivery areas.

Using the correct ZIP Code helps improve mail delivery, shipping accuracy, navigation, and address verification.

Official ZIP Code information is maintained by the United States Postal Service (USPS).

Conclusion

Whether you're looking for a mailing address, planning a move, or researching local information, this Castaic, California ZIP Code guide makes it easy to find the postal information you need. Explore the ZIP Code list, use the map, and browse additional location details to learn more about Castaic and its surrounding communities.