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	82440	Ralston	Park County	`307`
WY	82441	Shell	Big Horn County	`307`
WY	82442	Ten Sleep	Washakie County	`307`
WY	82443	Thermopolis	Hot Springs County	`307`
WY	82450	Wapiti	Park County	`307`
WY	82501	Riverton	Fremont County	`307`
WY	82510	Arapahoe	Fremont County	`307`
WY	82512	Crowheart	Fremont County	`307`
WY	82513	Dubois	Fremont County	`307`
WY	82514	Fort Washakie	Fremont 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.