Ozaukee County, Wisconsin ZIP Codes

Zip Code
City
Population ↓
53092Mequon20,886
53012Cedarburg19,183
53024Grafton18,982
53074Port Washington13,682
53097Mequon7,683
53080Saukville5,059
53021Fredonia4,537
53004Belgium3,475

Overview of ZIP Codes in Ozaukee 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.
8
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 8 ZCTAs in Ozaukee County, Wisconsin (US Census).

Sources

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

Recommended Reading