91761 ZIP Code
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91761 is a zip code assigned by the US Postal Service Office for a US City.
You can search for the 91761 zip code by its streets and block numbers if we have some of the streets loaded in our website
You should use 91761 Zip Code if you want to send mail to a certain US City.
91761 Zip Code - US ZIP Codes
The US ZIP Code basic format consists of five decimal numerical digits assigned like the 91761 Zip Code. An extended ZIP+4 code, introduced in the 1980s, includes the five digits 91761 ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code.
91761 Zip Code belongs to Ontario, CA - US. 91761 Zip code is located at San Bernardino County and is related to this cities: Ontario
91761 Zip Code Area Code is 909/951 and 91761 Zip Code Time Zone is Pacific (GMT -08:00).
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 91761 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.