McDonough County, Illinois ZIP Codes

10 ZIP Codes

Zip Code
City
Population ↓
61455Macomb17,317
61422Bushnell3,002
62326Colchester2,236
61420Blandinsville968
61440Industry744
61438Good Hope739
61470Prairie City488
61411Adair376
61416Bardolph204
61475Sciota180

Overview of ZIP Codes in McDonough County

ZCTAs are geographic areas created by the US Census Bureau to approximate the delivery areas of ZIP Codes for statistical analysis. While ZCTAs use the same five-digit codes as ZIP Codes, they represent defined geographic areas that may not exactly match the mail delivery routes of ZIP Codes.
10
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 10 ZCTAs in McDonough County, Illinois (US Census).

Sources

  1. US Census: 2025 Gazetteer Files
  2. US Census: ZIP Code Tabulation Areas (ZCTAs)

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