Walnut ZIP Code Finder by Area and Number California

The Walnut zip code is 91789 in California helps people find the correct mailing location for homes, businesses, and services in Walnut.

Welcome to our complete guide for Walnut, California ZIP Codes. Whether you're moving to Walnut, 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 Walnut, California.

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

City	Walnut
Zip Code	91789
State	California
County	Los Angeles
Population	40,933
Latitude	34.01858
Longitude	-117.85408
Time Zone	America/Los_Angeles

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

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

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

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

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

ZIP Codes in Walnut

The following ZIP Codes serve Walnut, California.

ZIP Code	County	Population	Time Zone
91789	Los Angeles	40,933	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 Walnut.

About Walnut, California

Walnut 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 Walnut ZIP Code, this page provides the latest available information to help you find the correct postal code quickly.

Walnut ZIP Code Map

The Walnut 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 Walnut

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

Street address
Neighborhood
Business name
Landmark
USPS mailing address

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

About Living in Walnut

Walnut, California is part of Los Angeles County and is home to approximately 40,933 residents. The city operates in the America/Los_Angeles time zone and is identified by the geographic coordinates 34.01858 latitude and -117.85408 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 Walnut ZIP Codes

ZIP Codes in Walnut 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 Walnut ZIP Codes Matter

Using the correct Walnut 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

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

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

Walnut is located in Los Angeles County.

Walnut is located in California.

The estimated population of Walnut is 40,933.

Walnut 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 Walnut, 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 Walnut and its surrounding communities.