Location: California → Contra Costa → Antioch
1 location(s) using this postal code in California, United States
This postal code is assigned to Antioch Municipality County Contra Costa, California, United States. This location-level postal code helps ensure accurate mail delivery and location identification.
United States uses numeric zip codes with 5 digits (example: 99553). In our directory, these codes are organized from states down to municipalities.
Location: California → Contra Costa → Antioch
1 location(s) using this postal code in California, United States
This postal code is assigned to Antioch Municipality County Contra Costa, California, United States. This location-level postal code helps ensure accurate mail delivery and location identification.
United States uses numeric zip codes with 5 digits (example: 99553). In our directory, these codes are organized from states down to municipalities.
When sending mail or packages to this area, use the postal code below to ensure accurate and timely delivery.
Recipient Name
House #, Street Name
Antioch
Contra Costa, California
94509
United States
Include this postcode on all letters and packages sent within United States.
For international deliveries, include "United States" on the last address line after the postcode.
This postcode covers California → Contra Costa → Antioch in United States.
Yes. 94509 is an active postcode for California → Contra Costa → Antioch in United States. It follows the 5-character format used in this country.
Search by state and county to find the correct postcode in United States. Search Postcodes
Found incorrect info for 94509?
When sending mail or packages to this area, use the postal code below to ensure accurate and timely delivery.
Recipient Name
House #, Street Name
Antioch
Contra Costa, California
94509
United States
Include this postcode on all letters and packages sent within United States.
For international deliveries, include "United States" on the last address line after the postcode.
This postcode covers California → Contra Costa → Antioch in United States.
Yes. 94509 is an active postcode for California → Contra Costa → Antioch in United States. It follows the 5-character format used in this country.
Search by state and county to find the correct postcode in United States. Search Postcodes
Found incorrect info for 94509?