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U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

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Bremer County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Bremer County.

County State ZIP Code City Area Codes
Bremer County IA 50622 Denver 319
Bremer County IA 50631 Frederika 319
Bremer County IA 50647 Janesville 319
Bremer County IA 50666 Plainfield 319, 641
Bremer County IA 50668 Readlyn 319, 563
Bremer County IA 50674 Sumner 319, 563
Bremer County IA 50676 Tripoli 319, 563
Bremer County IA 50677 Waverly 319

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About U.S. ZIP Codes

ZIP codes are a United States Postal Service system introduced in 1963 to make mail routing more accurate and efficient. The standard format uses five digits, while ZIP+4 adds four more digits for a more precise delivery segment.

ZIP codes cover the United States, its territories, military mail routes, and other USPS delivery points. This directory organizes that data for practical lookup by ZIP code, city, county, and state.