In the USA, Canada, Australia and perhaps other countries, Zip or Postal codes are not necessarily unique, with several communities sharing the same code. After entering your Zip or Postal code, PestaRoo allows you to choose which town you want. So, on both Location Info and Customer Info, PestaRoo supports these multiple towns in a value list. After typing in the Zip code or Postal Code,  clicking on the city shows all the other cities for that zip code. Also note that the drop down list is display in creation order. This means you can go into the zip code value list and reverse two or more towns for the same code if you want one of them to be the default (first) value.