Boone County ZIP Codes

List of ZIP Codes in Boone County

The following table lists ZIP Codes associated with Boone County, Illinois, based on ZIP Code Tabulation Area (ZCTA) data from the U.S. Census Bureau.

About Boone County ZIP Codes

Boone County in Illinois (IL) is served by approximately 5 ZIP Codes. These codes cover residential neighborhoods, business districts, and rural areas that fall under the county's jurisdiction.

Based on ZIP-level population estimates, the total population covered by these ZIP Codes is around 51,084 people. Population and density values vary from one ZIP Code to another, reflecting the mix of dense urban communities and lower-density suburban or rural zones.

Many of the most significant population centers in Boone County are located in cities such as Belvidere, Poplar Grove, Caledonia, Capron, Garden Prairie. These cities and towns help define the economic and demographic character of the county.

Most ZIP Codes in Boone County, Illinois follow the America/Chicago time zone.