ZipCode+ 1.4

the author of this app says:

ZipCode+ is an up-to-date listing of zip codes for all U.S. states and territories sorted alphabetically by state ... over 50,000 entries! There are three database options - Full, USPS Acceptable and Mini (no county information) along with a simple interface to look up a city/town name and display the corresponding county and zip code information.

Note

Updated database of zipcodes.