Illinois Gazetteer > Illinois ZIP Codes > County ZIP Codes > Boone ZIP Codes

Also see: ZIP Codes in Boone with Associated Cities & Towns

ZIP Codes in Boone County with Associated Cities & Towns

Belvidere   61008
Caledonia   61011
 Capron   61012
Garden Pr   61038
 Garden Prairie   61038
Poplar Grove   61065

ZIP Codes - Key Concepts

  1. ZIP Codes are categories for grouping mailing addresses and are not exact geographic regions.
  2. The centroid of a ZIP Code may be in one County and the associated city/town in another.
  3. In rural areas, a single ZIP Code may be used for cities and towns in several different Counties.
  4. ZIP Code "areas" can overlap, be subsets of each other, or be artificial constructs with no geographic area.
  5. ZIP Codes are only loosely tied to cities.