Only a city that is "preferred" or "acceptable" is recognized as standard.
These systems attempt to correct incorrect city names and any that cannot be corrected are rejected. This means that it must have a street, city, state and ZIP code.
Standardization converts an address into a standard format by correcting the address, if possible, and adding missing information, such as a ZIP code, to produce a complete address containing a street address, city, state, and ZIP code.
If you live at a valid street address and find that it doesn't validate properly, you must contact your local United States Post Office and have the address validated and added to their system.
The following methods are used to achieve the most accurate address possible: Because a misspelling usually results in an undeliverable address, commonly misspelled words are corrected. Due to the large number of possible misspellings, not all of them can be accurately detected and corrected.