Winthrop Harbor IL ZIP Code
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Winthrop Harbor city is located in Illinois State, Lake County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Winthrop Harbor IL zip code by its streets and block numbers if we have some of the Winthrop Harbor streets loaded in our website
Winthrop Harbor Area Code is 224 and Time Zone is Central (GMT -06:00).
Winthrop Harbor Zip Code - Illinois
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Winthrop Harbor City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Winthrop Harbor ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Winthrop Harbor, Illinois.
The Winthrop Harbor Zip Code is 60096.
If you want to send a mail to Winthrop Harbor City, you should use the 60096 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Winthrop Harbor 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 60096 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Winthrop Harbor 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 Illinois.