| 52002 Asbury | 563 | Dubuque County | Iowa (IA) |
| 52045 Bankston | 563 | Dubuque County | Iowa (IA) |
| 52032 Bernard | 563 | Dubuque County | Iowa (IA) |
| 52033 Cascade | 563 | Dubuque County | Iowa (IA) |
| 52001 Center Grove | 563 | Dubuque County | Iowa (IA) |
| 52068 Centralia | 563 | Dubuque County | Iowa (IA) |
| 52001 Dubuque | 563 | Dubuque County | Iowa (IA) |
| 52002 Dubuque | 563 | Dubuque County | Iowa (IA) |
| 52003 Dubuque | 563 | Dubuque County | Iowa (IA) |
| 52004 Dubuque | 563 | Dubuque County | Iowa (IA) |
| 52099 Dubuque | 563 | Dubuque County | Iowa (IA) |
| 52039 Durango | 563 | Dubuque County | Iowa (IA) |
| 52040 Dyersville | 563 | Dubuque County | Iowa (IA) |
| 52001 Eagle Point | 563 | Dubuque County | Iowa (IA) |
| 52045 Epworth | 563 | Dubuque County | Iowa (IA) |
| 52046 Farley | 563 | Dubuque County | Iowa (IA) |
| 52033 Fillmore | 563 | Dubuque County | Iowa (IA) |
| 52053 Holy Cross | 563 | Dubuque County | Iowa (IA) |
| 52001 Julien | 563 | Dubuque County | Iowa (IA) |
| 52001 Key West | 563 | Dubuque County | Iowa (IA) |
| 52056 Luxemburg | 563 | Dubuque County | Iowa (IA) |
| 52001 Massey | 563 | Dubuque County | Iowa (IA) |
| 52099 McGraw Hill Companies | 563 | Dubuque County | Iowa (IA) |
| 52065 New Vienna | 563 | Dubuque County | Iowa (IA) |
| 52079 Otter Creek | 563 | Dubuque County | Iowa (IA) |
| 52068 Peosta | 563 | Dubuque County | Iowa (IA) |
| 52040 Petersburg | 563 | Dubuque County | Iowa (IA) |
| 52001 Rockdale | 563 | Dubuque County | Iowa (IA) |
| 52001 Sageville | 563 | Dubuque County | Iowa (IA) |
| 52001 Shawondasse | 563 | Dubuque County | Iowa (IA) |
| 52073 Sherrill | 563 | Dubuque County | Iowa (IA) |
| 52078 Worthington | 563 | Dubuque County | Iowa (IA) |
| 52079 Zwingle | 563 | Dubuque County | Iowa (IA) |