You can store a NJ zip in an integer; you just have to be careful when printing it. Annoying, but if space is scarce, maybe worth it. (Though if space is too

You can store a NJ zip in an integer; you just have to be careful when printing it. Annoying, but if space is scarce, maybe worth it. (Though if space is too scarce for zipcodes, good luck storing anything else more interesting.)