IDB LLC
Zip Code
FreeZip Code App can show zip code of your current location. Also you can search city by zip code or zip code by city.
iOSipinfo
FreeThe ipinfo app uses the http://ipinfo.io API to show you your IP address and related details: * IP address * Hostname * Network (ASN) * Geolocation...
iOSZip Code
FreeJust launch the app to find out what your current zip code is. Not sure what the zip code is for a city. Search and find out.
Android