No zip codes ?
Had to go to Wikipedia. Interesting. https://en.wikipedia.org/wiki/ZIP_Code?wprov=sfti1
“A ZIP Code is a postal code used by the United States Postal Service (USPS). Introduced in 1963, the basic format consisted of five digits. In 1983, an extended ZIP+4 code was introduced; it included the five digits of the ZIP Code, followed by a hyphen and four digits that designated a more specific location.”