Grass Lake MI ZIP Code
Grass Lake city is located in Michigan State, Jackson County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Grass Lake MI zip code by its streets and block numbers if we have some of the Grass Lake streets loaded in our website
Grass Lake Area Code is 517 and Time Zone is Eastern (GMT -05:00).
Grass Lake Zip Code - Michigan
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Grass Lake City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Grass Lake ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Grass Lake, Michigan.
The Grass Lake Zip Code is 49240.
If you want to send a mail to Grass Lake City, you should use the 49240 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Grass Lake 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 49240 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Grass Lake 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 Michigan.