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
All states and U.S. territories
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State directory

Wyoming ZIP Codes

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

State ZIP Code City County Area Codes
WY 82836 Dayton Sheridan County 307
WY 82837 Leiter Sheridan County 307
WY 82838 Parkman Sheridan County 307, 406
WY 82839 Ranchester Sheridan County 307, 406
WY 82840 Saddlestring Johnson County 307
WY 82842 Story Sheridan County 307
WY 82844 Wolf Sheridan County 307
WY 82845 Wyarno Sheridan County 307
WY 82901 Rock Springs Sweetwater County 307, 435, 970
WY 82902 Rock Springs Sweetwater County 307
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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.