The ZIP codes that surround 60139 are 60108, 60101, 60148, 60137, 60187 and 60188. These ZIP codes are located in the state of Illinois, with 60139 including the city of Glendale Heights.
ZIP codes are a part of a system used by the United States Post Office in the delivering of mail. A basic ZIP code has five numerical digits. An extended ZIP code can be used and allows mail to be delivered to a more-specific location.
The use of ZIP codes in large cities started in 1943. The name ZIP code is an acronym for zone improvement plan code.