Zip Tracker contain zip codes directory and allows you to perform the transformations such as State - City - ZIP5. It means that on the entered State it is possible receive the list of cities and ZIP5, included in this State. On the entered City it is possible to receive the list of States, which include cities with such name and ZIP5, appropriate to them. On entered ZIP5 it is possible to receive the appropriate city and State names. The received list can be sorted in the ascending or descending order by any attribute (on State, City or ZIP5). All query results can be exported into several file formats. All functions can be performs with keyboard shortcuts.