- Lewis and Clark County, Montana (data.census.gov)
Lewis and Clark County, Montana has 3,458.4 square miles of land area and is the 14th largest county in Montana by total area. Lewis and Clark County, Montana is bordered by Teton County, Montana, Jefferson County, Montana, Meagher County, Montana, Flathead County, Montana, Cascade County, Montana, Powell County, Montana, and Broadwater County, Montana.
eastbound on U.S. Route 12
- Lewis and Clark County, Montana (Wikipedia)
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, making it the 4th least populous capital county in the United States. 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.