Iron County, Michigan ZIP Codes

6 ZIP Codes

Zip Code
City
Population ↓
49935Iron River5,841
49920Crystal Falls4,380
49915Caspian570
49927Gaastra371
49903Amasa233
49902Alpha215

Overview of ZIP Codes in Iron 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.
6
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 6 ZCTAs in Iron County, Michigan (US Census).

Sources

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

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