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- Map of Liberty Township (Dubuque County), Iowa ZIP Codes
Map of ZIP Codes in Liberty Township (Dubuque County), Iowa
List of ZIP Codes in Liberty Township (Dubuque County), Iowa |
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ZIP Code | ZIP Code City Name | Population | ZIP Code Type |
| Guttenberg | 3136 | Non-Unique |
| Holy Cross | 1163 | Non-Unique |
| Luxemburg | 0 | PO Box |
| New Vienna | 1130 | Non-Unique |