ZIP codes in Columbia County
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- 17814 BentonColumbia County
- 17815 BloomsburgColumbia County
- 17820 CatawissaColumbia County
- 17846 MillvilleColumbia County
- 17858 NumidiaColumbia County
- 17859 OrangevilleColumbia County
- 17878 BentonColumbia County
- 17888 Mount CarmelColumbia County
- 17920 AristesColumbia County
- 18603 BerwickColumbia County
- 18631 MifflinvilleColumbia County