Chicago, IL

60687 is a unique ZIP code in Chicago, Illinois, primarily used by P.O. Boxes at the United States Post Office located at 433 W. Harrison St. Nearby landmarks include the iconic Willis Tower, formerly known as the Sears Tower, which stands as the second-tallest building in the United States. Additionally, the Union Station and the Chicago Board of Trade are notable landmarks that add to the area's bustling urban atmosphere.