There are 14 zip codes in Washtenaw County, Michigan. The most populated is 48197, located in Ypsilanti. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
48197Ypsilanti66,422
48103Ann Arbor54,563
48104Ann Arbor45,161
48198Ypsilanti39,867
48105Ann Arbor37,598
48108Ann Arbor26,888
48176Saline23,240
48130Dexter16,731
48189Whitmore Lake13,718
48118Chelsea13,001
48158Manchester7,883
48109Ann Arbor5,773
48191Willis4,059
48190Whittaker187

Washtenaw County, Michigan Zip Codes by Population (2024)