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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Idaho ZIP Codes

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

State ZIP Code City County Area Codes
ID 83428 Irwin Bonneville County 208, 307, 986
ID 83429 Island Park Fremont County 208, 406, 986
ID 83431 Lewisville Jefferson County 208, 986
ID 83433 Macks Inn Fremont County 208, 986
ID 83434 Menan Jefferson County 208, 986
ID 83435 Monteview Jefferson County 208, 986
ID 83436 Newdale Fremont County 208, 986
ID 83438 Parker Fremont County 208, 986
ID 83440 Rexburg Madison County 208, 986
ID 83441 Rexburg Madison County 208
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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.