There are 20 zip codes in Whitman County, Washington. The most populated is 99163, located in Pullman. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
9916333,829Pullman
991114,012Colfax
991611,366Palouse
99171969Saint John
99170955Rosalia
99130833Garfield
99033790Tekoa
99143691Lacrosse
99125626Endicott
99158619Oakesdale
99179568Uniontown
99113555Colton
99102509Albion
99128289Farmington
99017226Lamont
99149194Malden
99176136Thornton
9933391Hooper
9917432Steptoe
9913617Hay
showing: 20 rows

Zip Codes in Whitman County, Washington by Population (2024)