PostCheck

Is an address missing a ZIP Code? Do you know the ZIP Code, but you're not sure what city it's for? Look up your missing address information with a single click, rather than visiting USPS.com each time. PostCheck will also reformat an address to conform to the United States Post Office standards.
Price USD10
License Free to try
File Size 598.69 kB
Version 2.5
Operating System Mac OS X 10.5 Mac OS X 10.8 Macintosh Mac OS X 10.5 PPC Mac OS X 10.6 Intel Mac OS X 10.7 Mac OS X 10.5 Intel