Buchanan County, Iowa Zip Codes

Zip Code	City	Population
50644	Independence	8,705
50629	Fairbank	2,374
50682	Winthrop	1,649
50641	Hazleton	1,446
52210	Brandon	946
52329	Rowley	757
52326	Quasqueton	727
50650	Lamont	693
50607	Aurora	417
50654	Masonville	328

Population is the most recent figure from the U.S. Census Bureau's 2022 American Community Survey (ACS) 5-Year Estimates.