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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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Johnson County ZIP Codes

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

County State ZIP Code City Area Codes
Johnson County MO 64733 Chilhowee 660
Johnson County MO 64761 Leeton 660
Johnson County MO 65305 Whiteman Air Force Base 660
Johnson County MO 65336 Knob Noster 660
Johnson County NE 68329 Cook 402, 531
Johnson County NE 68332 Crab Orchard 402, 531
Johnson County NE 68348 Elk Creek 402, 531
Johnson County NE 68443 Sterling 402, 531
Johnson County NE 68450 Tecumseh 402, 531
Johnson County TN 37640 Butler 423, 828
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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.