Lewis and Clark County, Montana

Lewis and Clark County is a county located in the U.S. state of Montana. As of the 2020 census, the population was 70,973. Its county seat and most populous city is Helena, the state capital. The numerical designation for Lewis and Clark County (used in the issuance of the state's license plates) is 5. The county was established on June 2, 1865, as one of the nine original counties of the Territory of Montana named Edgerton County in honor of Sidney Edgerton, first Governor of the Territory of Montana, and was renamed Lewis and Clark County on March 1, 1868, in honor of explorers Meriwether Lewis and William Clark. Lewis and Clark County is part of the Helena, Montana Micropolitan Statistical Area, and comprises the entirety of the Helena media market.

Geography

According to the United States Census Bureau, the county has a total area of , of which is land and (1.1%) is water.

Major highways

Adjacent counties

Teton County - north
Cascade County - east
Meagher County - east
Broadwater County - southeast
Jefferson County - south
Powell County - west
Flathead County - northwest

National protected areas

Flathead National Forest (part)
Helena National Forest (part)
Lewis and Clark National Forest (part)
Lolo National Forest (part)
Rocky Mountain Front Conservation Area (part)

Demographics

Communities

Cities

Helena (county seat)
East Helena

Census-designated places

Augusta
Canyon Creek
Craig
Gilman
Helena Valley Northeast
Helena Valley Northwest
Helena Valley Southeast
Helena Valley West Central
Helena West Side
Lincoln
Marysville
Milford Colony
Rimini
Unionville
Wolf Creek
York

Other unincorporated communities

Austin
Bald Butte
Birdseye
Canyon Ferry
Dearborn (partially within Cascade County)
Fort Harrison Army Air Park
Four Range
Frontier Town
Gearing
La Chapelle Place
Nelson
Silver City
Stoner Place
Weed
Wilborn
Winston

Education

School districts include:

K-12 (Unified):

East Helena K-12 Schools
Lincoln K-12 Schools

High school: