US Gazetteer > Illinois Gazetteer > Illinois ZIP Codes > County ZIP Codes > Williamson ZIP Codes

ZIP Codes in Williamson County with Associated Cities & Towns

Cambria   62915
Carterville   62918
Colp   62921
Creal Springs   62922
 Energy   62933
Freeman Spur   62841
Herrin   62948
Hurst   62949
 Johnston City   62951
Marion   62959
Pittsburg   62974

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.