Bremer County, Iowa ZIP Codes

8 ZIP Codes

Zip Code
City
Population ↓
50677Waverly12,673
50622Denver3,549
50674Sumner3,446
50676Tripoli2,017
50647Janesville1,978
50668Readlyn1,216
50666Plainfield753
50631Frederika225

Overview of ZIP Codes in Bremer 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 Bremer County, Iowa (US Census).

Sources

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

Recommended Reading