This is an online tool (Mashup) to search zip code of a place, address or city in US.
Select the name of the Place/Address/City (in US) from the suggested list.
This will display the zip code of the selected location from US on Google map. Note that the zip code may be searched with nearby approximation.
Below is the select list of some major cities from US. Click on the "Show Zip Code" button to go get its zip code.
Note that many cities from US may have multiple localities in it, so the clicking on "Show Zip Code" below may only show zip code of central locality.
For specific locality/address, you need to select its name in the above text box.