Postal Explorer > Publication 28 - Postal Addressing Standards > 2 Postal Addressing Standards > 22 Last Line of the Address > 223 Spelling of City Names
Spell city names in their entirety. When abbreviations must be used due to labeling constraints, use only the approved 13–character abbreviations provided in the City State file.
Note: Normally, the abbreviations follow the logic of using existing abbreviations, such as for suffix or directional words.