ZIP Codes in Dubuque, IA
Dubuque uses 3 ZIP codes, all in Dubuque County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 3 Dubuque ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 52001 | standard | Dubuque | 43,101 |
| 52002 | standard | Dubuque | 17,005 |
| 52003 | standard | Dubuque | 13,796 |
Finding a ZIP+4 in Dubuque
Knowing which of these 3 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 Dubuque street almost always have different ZIP+4 codes even though they share all five leading digits.
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