Washington Zip Codes List. The population of washington is estimated to be 7,709,374 people, making it the 13th most populous state in the. A full list of zip codes is below, including type, population and aliases for each.

You can get the most current census population data for all 595 washington zip codes, sorted from the most populous zip codes in washington to the least,. You can also label the washington zip codes on the map.