Hi all,

I am looking for shapefiles (or, any other GIS format) on 9-digit Zip codes for the US (NY and MA states), which includes the regular 5-digit zip codes plus the 4-digit courier codes. I found the 5-digit zip codes via multiple portals but not the full 9-digit dataset. Is there a way to access the 4-digit courier codes or the full 9-D dataset? Some private delivery services make them available for a fee. I am looking for open data alternatives as my funding does not cover data purchasing. Any direction will be much appreciated.

Thank you.

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