Antioch ZIP Code Finder by Area and Number California

The Antioch zip code is 94509 in California helps people find the correct mailing location for homes, businesses, and services in Antioch.

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

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

City	Antioch
Zip Code	94509
State	California
County	Contra Costa
Population	71,013
Latitude	37.99214
Longitude	-121.8142
Time Zone	America/Los_Angeles

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

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

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

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

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

ZIP Codes in Antioch

The following ZIP Codes serve Antioch, California.

ZIP Code	County	Population	Time Zone
94509	Contra Costa	71,013	America/Los_Angeles
94531	Contra Costa	44,746	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 Antioch.

About Antioch, California

Antioch is located in Contra Costa 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 Antioch ZIP Code, this page provides the latest available information to help you find the correct postal code quickly.

Antioch ZIP Code Map

The Antioch 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 Antioch

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

Street address
Neighborhood
Business name
Landmark
USPS mailing address

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

About Living in Antioch

Antioch, California is part of Contra Costa County and is home to approximately 71,013 residents. The city operates in the America/Los_Angeles time zone and is identified by the geographic coordinates 37.99214 latitude and -121.8142 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 Antioch ZIP Codes

ZIP Codes in Antioch 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 Antioch ZIP Codes Matter

Using the correct Antioch 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

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

Antioch is currently served by 2 ZIP Codes. The number of ZIP Codes depends on the size of the city and USPS delivery routes.

Antioch is located in Contra Costa County.

Antioch is located in California.

The estimated population of Antioch is 71,013.

Antioch 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 Antioch, 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 Antioch and its surrounding communities.