I've installed a TIGER Geocoder with the data from 2017 and I've been geocoding a couple addresses. If my address is missing some information or if the geocoder gives me a really good rating, I'm replacing the information such as Zip Code or City on my address.
After this, I'm using a Python library to check the Zip Codes and addresses format.
I've noticed TIGER is adding the Zip Code
16777 to my data very often, and when I check on the web, this Zip Code does not exist.
Can I check in the geocoder where does this Zip Code belongs and why it's adding it?