Lake County, Michigan ZIP Codes

Zip Code
City
Population ↓
49304Baldwin5,408
49656Luther1,908
49644Irons1,715
49402Branch1,411
49623Chase986
49642Idlewild985

Overview of ZIP Codes in Lake 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 Lake County, Michigan (US Census).

Sources

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

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