South Beloit IL ZIP Code
South Beloit city is located in Illinois State, Winnebago County and has a unique zip code assigned by the US Postal Service Office.
You can search for the South Beloit IL zip code by its streets and block numbers if we have some of the South Beloit streets loaded in our website
South Beloit Area Code is 815/779 and Time Zone is Central (GMT -06:00).
South Beloit Zip Code - Illinois
The US ZIP Code basic format consists of five decimal numerical digits assigned to the South Beloit City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the South Beloit ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in South Beloit, Illinois.
The South Beloit Zip Code is 61080.
If you want to send a mail to South Beloit City, you should use the 61080 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded South Beloit 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 61080 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a South Beloit 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.