lookup US 5 digit zip codes by latitude/longitude Returns a 5 digit US zipcode A 5 digit US zip code Parameters are latitude/longitude in degrees minutes seconds format Latitude, in degrees minutes seconds notation. Should be formateed like Hddmmss.s, where H is the hemisphere (N or S), d m and s are all decimal digits. Longitude, in degrees minutes seconds notation. Should be formateed like Hdddmmss.s, where H is the hemisphere (E or W), d m and s are all decimal digits. Lookup a 5 digit US zip code by latitude/longitude