South Wilmington IL ZIP Code
South Wilmington city is located in Illinois State, Grundy County and has a unique zip code assigned by the US Postal Service Office.
You can search for the South Wilmington IL zip code by its streets and block numbers if we have some of the South Wilmington streets loaded in our website
South Wilmington Area Code is 815 and Time Zone is Central (GMT -06:00).
South Wilmington Zip Code - Illinois
The US ZIP Code basic format consists of five decimal numerical digits assigned to the South Wilmington City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the South Wilmington ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in South Wilmington, Illinois.
The South Wilmington Zip Code is 60474.
If you want to send a mail to South Wilmington City, you should use the 60474 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded South Wilmington ZIP code system that it called ZIP+4, often called "plus-four codes", "add-on codes", or "add ons". A ZIP+4 code uses the basic 60474 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a South Wilmington city block, a group of apartments, an individual high-volume receiver of mail or any other unit that could use an extra identifier to aid in efficient mail sorting and delivery in Illinois.