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Defining a Municipal Tax Boundary File through GIS

Question asked by marvin.davis on Sep 18, 2019

Currently, West Virginia's Tax Department has municipalities who institute a 1% sales tax define their boundary through identifying the ZIP+4 codes that exist within their municipal boundary, using the USPS ZIP Code Lookup Tool and Microsoft Excel. I would have to believe a better method would be to utilize street address number ranges using a GIS boundary and possibly linear referencing to define what is in or out of a municipality than ZIP+4 codes, since those are subject to change according to what I've been able to find on them.


Am I on the right path that this would be a better solution than just ZIP+4 codes? Are there any other ideas?


For reference, here is the West Virginia Tax Department's current instructions for how they define tax boundaries: