US Gazetteer > Illinois Gazetteer > Illinois ZIP Codes > County ZIP Codes > Mason ZIP Codes

ZIP Codes in Mason County with Associated Cities & Towns

Bath   62617
Biggs   62633
Easton   62633
Eckard   62644
Enion   62644
Forest City   61532
 Havana   62644
Kilbourne   62655
Luther   62664
Lynchburg   62617
Manito   61546
Mason City   62664
 Poplar City   62633
San Jose   62682
Snicarte   62617
Teheran   62664
Topeka   61567

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.