Ontario CA ZIP Code


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Ontario city is located in California State, San Bernardino County and has a unique zip code assigned by the US Postal Service Office.


You can search for the Ontario CA zip code by its streets and block numbers if we have some of the Ontario streets loaded in our website

Ontario Area Code is 909/951 and Time Zone is Pacific (GMT -08:00).



Ontario Zip Code - California

The US ZIP Code basic format consists of five decimal numerical digits assigned to the Ontario City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Ontario ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Ontario, California.

The Ontario Zip Code is 91758, 91761, 91762, 91764.



If you want to send a mail to Ontario City, you should use the 91758, 91761, 91762, 91764 Zip Code.

In 1983, the U.S. Postal Service introduced an expanded Ontario ZIP code system that it called ZIP+4, often called "plus-four codes", "add-on codes", or "add ons". A ZIP+4 code uses the basic 91758, 91761, 91762, 91764 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Ontario city block, a group of apartments, an individual high-volume receiver of mail or any other unit that could use an extra identifier to aid in efficient mail sorting and delivery in California.


Ontario, California - MAP



What is the Ontario Zip Code?

The Ontario Zip Code in California is 91758, 91761, 91762, 91764.


ZIP Plus 4 Ontario - US Streets Zip Codes

By pressing keys ctrol + F you can search Ontario zip codes by its streets, highways, and know the ZIP+4 US ZIP Code


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Search Ontario Zip Code

What is the zip code for Ontario CA?

91758, 91761, 91762, 91764

Ontario, California - US Zip Code



Ontario ZIP Code Lookup

91758, 91761, 91762, 91764 Zip Code File:
Zip Code: 91758, 91761, 91762, 91764,
City: Ontario
Ontario Area Code: 909/951
Ontario, CA - Time Zone: Pacific (GMT -08:00)
County: San Bernardino
City Alias: Ontario, Ontario, Ontario, Montclair, Ontario
State: California
State Abb: CA



California Zip+4 - Nearby Ontario Cities

Cities near Ontario in California
(straight line)


View more California zip codes