While the U.S. uses five digits, other countries use six-digit formats:

To verify a specific U.S. address or find a correct code, you can use the official USPS ZIP Code Lookup .

: This range belongs to Western Pennsylvania (specifically the Pittsburgh area). For example, 15001 is Aliquippa and 15090 is Wexford. 06483 : Located in Seymour, Connecticut . 44483 : Located in Warren, Ohio . 2. International Postal Code