ZIP Codes in Ann Arbor, MI
Ann Arbor uses 5 ZIP codes, all in Washtenaw County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 5 Ann Arbor ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 48103 | standard | Washtenaw | 55,054 |
| 48104 | standard | Washtenaw | 43,979 |
| 48105 | standard | Washtenaw | 37,048 |
| 48108 | standard | Washtenaw | 27,666 |
| 48109 | standard | Washtenaw | 5,939 |
Finding a ZIP+4 in Ann Arbor
Knowing which of these 5 ZIP codes covers an address only gets you partway. The four-digit extension identifies the specific delivery point — typically one side of one block. Two houses facing each other on the same Ann Arbor street almost always have different ZIP+4 codes even though they share all five leading digits.
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