ZIP+4 start and end ranges
No ambiguity with the lookup and that the given ZIP+4 code is the correct.
Qualify for bulk mail prices by including Carrier Route IDs
Such as PO Box, street or high rise.
Only if provided to USPS
Type of government building (if applicable).
Facility code associated with the 5-digit ZIP Code
Indicates whether our not the local post office has a city delivery carrier route.
Address exists, but not a valid mailing address.