The “ZIP” in a ZIP code is an acronym for Zone Improvement Plan.  ZIP codes were first introduced in 1963 in order to make mail deliveries more efficient.  ZIP codes begin with 0 on the East Coast and climb to 9 once you reach the West Coast.  Postal worker Robert Moon is considered to be the father of ZIP codes.  If he’s the father of ZIP codes, he must really sleep around.  Now there are ZIP codes all over the country.  What a playa.