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.

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Idaho ZIP Codes

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

State ZIP Code City County Area Codes
ID 83239 Georgetown Bear Lake County 208, 986
ID 83241 Grace Caribou County 208, 986
ID 83243 Holbrook Oneida County 208, 986
ID 83244 Howe Butte County 208, 986
ID 83245 Inkom Bannock County 208, 986
ID 83246 Lava Hot Springs Bannock County 208, 986
ID 83250 Mccammon Bannock County 208, 986
ID 83251 Mackay Custer County 208, 986
ID 83252 Malad City Oneida County 208, 435, 986
ID 83253 May Custer County 208, 986
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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.