Can anyone tell me an United States postal code?
You want any US postal code, which, by the way, we call “zip code” or, zip code + 4. I don’t know about Canada’s system, but the USA has 5 basic digits that make up a zip code, with most having +4 more based on more specific geographic location or box number within a particular city or region. Here is a link to simply type in any 5 digits and see if there is a city or town that has that zip code: http://zip4.usps.com/zip4/citytown_zip.