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

Idaho ZIP Codes

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

State ZIP Code City County Area Codes
ID 83442 Rigby Jefferson County 208, 986
ID 83443 Ririe Jefferson County 208, 986
ID 83444 Roberts Jefferson County 208, 986
ID 83445 Saint Anthony Fremont County 208, 986
ID 83446 Spencer Clark County 208, 986
ID 83448 Sugar City Madison County 208, 986
ID 83449 Swan Valley Bonneville County 208, 986
ID 83450 Terreton Jefferson County 208, 986
ID 83451 Teton Fremont County 208, 986
ID 83452 Tetonia Teton County 208, 307, 986
Page 13 of 33

Geographic Map of Idaho

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.