U.S. postal lookup

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.

42,735 verified records
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State directory

Kansas ZIP Codes

Complete postal directory, details, and geographic map for the State of Kansas.

State ZIP Code City County Area Codes
KS 66940 Cuba Republic County 785
KS 66941 Esbon Jewell County 402, 531, 785
KS 66942 Formoso Jewell County 785
KS 66943 Greenleaf Washington County 785
KS 66944 Haddam Washington County 785
KS 66945 Hanover Washington County 402, 531, 785
KS 66946 Hollenberg Washington County 402, 531, 785
KS 66948 Jamestown Cloud County 785
KS 66949 Jewell Jewell County 785
KS 66951 Kensington Smith County 308, 785
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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.