zip codes list
State: ILLINOIS
County: WASHINGTON

List of cities from WASHINGTON's county


ADDIEVILLE
ASHLEY
BEAUCOUP
BOLO
COVINGTON
DU BOIS
DUBOIS
ELKTON
HOYLETON
HUEGELY
IRVINGTON
LIVELY GROVE
NASHVILLE
NEW MINDEN
OAKDALE
OKAWVILLE
PILOT KNOB
RADOM
RICHVIEW
TODDS MILL
VENEDY

What is ZIP Code?


ZIP codes are a system of postal codes used by the United States Postal Service (USPS) since 1963. The term ZIP, an acronym for Zone Improvement Plan,[1] is properly written in capital letters and was chosen to suggest that the mail travels more efficiently, and therefore more quickly, when senders use the code in the postal address. The basic format consists of five decimal numerical digits. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the ZIP code, a hyphen, and four more digits that determine a more precise location than the ZIP code alone. The term ZIP code was originally registered as a servicemark (a type of trademark) by the U.S. Postal Service, but its registration has since expired