There are 11 zip codes in Buchanan County, Missouri. The most populated is 64506, located in St. Joseph. * 2024 populations estimated based on the latest ACS 5-year data.

Download Table Data

Enter your email below, and you'll receive this table's data in your inbox momentarily.

Zip Code
Population
City
6450622,241St. Joseph
6450714,316St. Joseph
6450513,944St. Joseph
6450312,033St. Joseph
6450110,567St. Joseph
6450410,348St. Joseph
644431,734Easton
644011,299Agency
64448935Faucett
64440904De Kalb
64484819Rushville
showing: 11 rows

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