The boxes that the Box Ghost empties and throws the contents at Danny are addressed to Elliott Kravitz of Arlington Heights, Illinois. They are labeled with the ZIP code of 50734. However, Arlington Heights's ZIP codes are 60002, 60003, and 60004. The 50734 is unassigned. (Perhaps that's why Mr. Kravitz's boxes were lost in a warehouse.) ZIP codes in the low 50000s are in Iowa, not Illinois.