Washington Zip code

Washington Zip code / Washington Postal code

Washington Zip code, introduced by the United States Postal Service (USPS) in 1963, are numerical codes used to identify specific geographic regions for mail delivery. and Washington zip code used a 5-digit postal format XXXXX, The first 3 digit represent the postal delivery zone code, and last 2 digit represent the Post office in the Washington.

There are total 6 zipcode code in Washington and range of zipcode is 31018 to 31094. View all the zip code on map of Washington by clicking on our mapview appliction.

1. What is the format of zip codes in Washington?
Washington zip codes follow the standard 5-digit format, starting with the number - 310.

2. How many zip codes are there in Washington?
There are approximately 6 zip codes in Washington, covering a vast area of the county.

3. Do all areas in Washington have zip codes?
Yes, almost all populated areas in Washington are assigned a unique zip code for mail delivery purposes.