There are 5 zip codes in Oregon County, Missouri. The most populated is 65791, located in Thayer. * 2024 populations estimated based on the latest ACS 5-year data.

CSV JSON
Zip Code
Population
City
657914,234Thayer
656062,431Alton
65692983Koshkonong
65778485Myrtle
65690131Couch

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