A free program for Android, by mz4mobile.
This app is a quick, convenient, and easy-to-use reference for all of the United States' zip codes, as well as the different city and county combinations that make up the country's local communities. It contains all the details you need to know, including information about the local postal service, a map showing the different cities and counties in the area, and even a few of the most common zip codes that are used for different types of addresses.
Why is this app so useful?
Because this app is so easy to use, you won't need to waste your time or effort finding out the details about a particular zip code or city.
