Zip Codes - categorizing for email list
I have around 2000 opted in email subscribers for my band LONGREEF. Have collected Zip Codes for each subscriber rather than City and State information. Just wondering - is there a list or software that can list the areas that zip codes are based on? Eg 20,000-22,000 is a certain area, 34,000-35000 is another etc.
Thanks in advance
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