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Map of ZIP Codes in Sumner Township (Winneshiek County), Iowa
List of ZIP Codes in Sumner Township (Winneshiek County), Iowa |
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ZIP Code | ZIP Code City Name | Population | ZIP Code Type |
| Calmar | 1938 | Non-Unique |
| Fort Atkinson | 1261 | Non-Unique |
| Ridgeway | 1004 | Non-Unique |