Lewis County, Idaho

Lewis County is tucked away in north-central Idaho and is named after Meriwether Lewis of Lewis and Clark fame. Nezperce serves as the county seat, giving this quiet corner of Idaho a small-town feel.

Rolling prairies and forests cover much of the landscape, and the scenery is especially beautiful in the spring when everything turns green. Farmers grow wheat, barley, lentils, and other crops in the region’s rich, fertile soil.

Lawyer Creek and Big Canyon Creek help shape parts of the county’s borders, while the Clearwater River forms much of the eastern boundary. The river is a popular spot for fishing, rafting, and enjoying the outdoors. Lewis County also has deep connections to the Nez Perce people, whose history and influence remain an important part of the area. It’s quiet out here—and that’s just how folks like it.

CategoryDetails
County NameLewis County
County SeatNezperce
EtymologyNamed in honor of the explorer Meriwether Lewis of the Lewis and Clark Expedition.
Cities, Towns, and CommunitiesNezperce, Kamiah, Winchester, and more
Interstates and HighwaysU.S. Route 95, Idaho State Highway 64
FIPS Code16-061
Total Area2,487 square miles (land: 2,473 sq mi; water: 14 sq mi)
Adjacent Counties Nez Perce County (Northwest), Idaho County (Southeast), Clearwater County (Northeast)
Time ZonePacific Time Zone
StateIdaho
Coordinates46.2° N, 116.4° W
Major LandmarksHells Gate State Park, Clearwater River, and the Nez Perce National Historical Park
Population3,500
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