Chicago, IL

ZIP code 60669 is a unique postal code exclusive to the Sears Tower in Chicago, Illinois. Renamed Willis Tower, it boasts the title of the second tallest building in the United States. This iconic skyscraper offers breathtaking views from its Skydeck observatory, attracting tourists and locals alike. The presence of this architectural marvel solidifies ZIP code 60669 as a notable destination in the heart of the Windy City.