There are 6 zip codes in Polk County, Oregon. The most populated is 97304, located in Salem. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
9730434,148Salem
9733823,201Dallas
9736113,557Monmouth
9735111,144Independence
973441,605Falls City
97371607Rickreall

Zip Codes in Polk County, Oregon by Population (2024)