You know what it looks like… but what is it called?
TAKE THE QUIZ“delivery zone”
We have one entry that includes the term delivery zone.
postal delivery zone
noun: one of the numbered sections into which a large city or metropolitan area is divided in the U.S. postal system so that placing the appropriate number after the name of the post office in the address on postal matter facilitates sorting and delivery of the mail
Love words? Need even more definitions?
Merriam-Webster unabridged