US Gazetteer > Michigan Gazetteer > Michigan ZIP Codes > County ZIP Codes > Washtenaw ZIP Codes

ZIP Codes in Washtenaw County with Associated Cities & Towns

Ann Arbor   48103
Ann Arbor   48104
Ann Arbor   48105
Ann Arbor   48106
Ann Arbor   48107
Ann Arbor   48108
Ann Arbor   48109
Ann Arbor   48113
 Bridgewater   48115
Chelsea   48118
Dexter   48130
Hamburg Twp   48189
Manchester   48158
Salem   48175
Saline   48176
 Superior Township   48198
Superior Twp   48198
Whitmore Lake   48189
Whittaker   48190
Willis   48191
Ypsilanti   48197
Ypsilanti   48198

ZIP Codes - Key Concepts

  1. ZIP Codes are categories for grouping mailing addresses and are not exact geographic regions.
  2. The centroid of a ZIP Code may be in one County and the associated city/town in another.
  3. In rural areas, a single ZIP Code may be used for cities and towns in several different Counties.
  4. ZIP Code "areas" can overlap, be subsets of each other, or be artificial constructs with no geographic area.
  5. ZIP Codes are only loosely tied to cities.