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U.S. ZIP Codes Database 2026

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Jo Daviess County ZIP Codes

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

County State ZIP Code City Area Codes
Jo Daviess County IL 61001 Apple River 608, 779, 815
Jo Daviess County IL 61025 East Dubuque 563, 608, 779, 815
Jo Daviess County IL 61028 Elizabeth 779, 815
Jo Daviess County IL 61036 Galena 563, 608, 779, 815
Jo Daviess County IL 61041 Hanover 563, 779, 815
Jo Daviess County IL 61059 Nora 779, 815
Jo Daviess County IL 61075 Scales Mound 608, 779, 815
Jo Daviess County IL 61085 Stockton 779, 815
Jo Daviess County IL 61087 Warren 608, 779, 815

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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.