There are 12 zip codes in Shiawassee County, Michigan. The most populated is 48867, located in Owosso. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
4886727,154Owosso
484298,428Durand
488487,705Laingsburg
488726,241Perry
488175,586Corunna
484184,408Byron
488573,489Morrice
484492,972Lennon
484142,837Bancroft
484602,689New Lothrop
48841713Henderson
48476604Vernon

Zip Codes in Shiawassee County, Michigan by Population (2024)