This article is an open conversation regarding the public data information and the difficulty to get them.
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Context : USPS announced the split of the 72712 zip code here
My client is using mapbox boundaries to map the different zip code area and help customers to pick and choose the routes. After a sharp and quick exchange with the customer support, I was left on my own I quote
Oct 29, 2:10 PM PDT
Hi David – I’m not able to help with that, as that involves a third party data source. Best of luck to finding the data you need, and let me know if you have any Mapbox-specific questions!
Where to find the data ZCTA5 polygon information ?
1 free resource census.gov . After exchanging with the census customer support, I was told that the zip code tabulation data are updated every 10 years. Lucky for my customer only 1 more year to wait. However our biggest customer is complaining to get this issue resolved as soon as possible
Sniffing/hacking the geo data from usps web interface as follow