Grayslake IL ZIP Code
Grayslake 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 Grayslake IL zip code by its streets and block numbers if we have some of the Grayslake streets loaded in our website
Grayslake Area Code is 847/224 and Time Zone is Central (GMT -06:00).
Grayslake Zip Code - Illinois
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Grayslake City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Grayslake ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Grayslake, Illinois.
The Grayslake Zip Code is 60030.
If you want to send a mail to Grayslake City, you should use the 60030 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Grayslake 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 60030 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Grayslake 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.