Johnson County, Illinois ZIP Codes

7 ZIP Codes

Zip Code
City
Population ↓
62995Vienna6,339
62939Goreville2,958
62912Buncombe1,515
62972Ozark1,056
62923Cypress441
62943Grantsburg428
62967New Burnside309

Overview of ZIP Codes in Johnson 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.
7
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 7 ZCTAs in Johnson County, Illinois (US Census).

Sources

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

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