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
Maps and coordinates
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 83124 Opal Lincoln County 307
WY 83126 Smoot Lincoln County 307
WY 83127 Thayne Lincoln County 208, 307, 986
WY 83128 Alpine Lincoln County 208, 307, 986
WY 83414 Alta Teton County 208, 307, 986
Page 20 of 20

Geographic Map of Wyoming

Postal context

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.