Ontario WI ZIP Code
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Ontario city is located in Wisconsin State, Vernon County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Ontario WI zip code by its streets and block numbers if we have some of the Ontario streets loaded in our website
Ontario Area Code is 608 and Time Zone is Central (GMT -06:00).
Ontario Zip Code - Wisconsin
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, Wisconsin.
The Ontario Zip Code is 54651.
If you want to send a mail to Ontario City, you should use the 54651 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 54651 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 Wisconsin.