Iowa Gazetteer > Iowa ZIP Codes > County ZIP Codes > Delaware ZIP Codes

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

ZIP Codes in Delaware County with Associated Cities & Towns

Colesburg   52035
Delaware   52036
Delaware   52057
Delhi   52223
 Dundee   52038
Earlville   52041
Greeley   52050
Hopkinton   52237
 Manchester   52057
Masonville   50654
Ryan   52330

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.