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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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Cass County ZIP Codes

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

County State ZIP Code City Area Codes
Cass County NE 68016 Cedar Creek 402, 531
Cass County NE 68037 Louisville 402, 531
Cass County NE 68048 Plattsmouth 402, 531, 712
Cass County NE 68058 South Bend 402, 531
Cass County NE 68304 Alvo 402, 531
Cass County NE 68307 Avoca 402, 531
Cass County NE 68347 Eagle 402, 531
Cass County NE 68349 Elmwood 402, 531
Cass County NE 68366 Greenwood 402, 531
Cass County NE 68403 Manley 402, 531
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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.