| ZIP Code | ZIP Code Place Name | County | ZIP Code Type |
|---|---|---|---|
| 52001 | Dubuque | Dubuque County | Standard |
| 52002 | Dubuque | Dubuque County | Standard |
| 52003 | Dubuque | Dubuque County | Standard |
| 52004 | Dubuque | Dubuque County | PO Box |
| 52031 | Bellevue | Jackson County | Standard |
| 52032 | Bernard | Dubuque County | Standard |
| 52033 | Cascade | Jones County | Standard |
| 52039 | Durango | Dubuque County | Standard |
| 52040 | Dyersville | Delaware County | Standard |
| 52045 | Epworth | Dubuque County | Standard |
| 52046 | Farley | Dubuque County | Standard |
| 52052 | Guttenberg | Clayton County | Standard |
| 52053 | Holy Cross | Dubuque County | Standard |
| 52054 | La Motte | Jackson County | Standard |
| 52056 | Luxemburg | Dubuque County | PO Box |
| 52065 | New Vienna | Dubuque County | Standard |
| 52068 | Peosta | Dubuque County | Standard |
| 52073 | Sherrill | Dubuque County | Standard |
| 52078 | Worthington | Dubuque County | Standard |
| 52079 | Zwingle | Jackson County | Standard |
| 52099 | Dubuque | Dubuque County | Unique |