Lewis and Clark County is a county located in the state of Montana. Based on the 2010 census, the population was 63,395. Its county seat
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 in 1865 as Edgerton County, and was renamed "Lewis and Clark County" two years later. The present name was given in
honor of explorers Lewis and Clark.
Lewis and Clark County is part of the Helena, MT Micropolitan Statistical Area.
Meriwether Lewis and William Clark, the famous explorers
County QuickFacts: CensusBureau Quick Facts
Lewis & Clark County was created 2 February 1865 as an original county. County seat: Helena
As reported by the Census Bureau, the county has a total area of 3,498 square miles (9,059 km2), of which,
3,461 square miles (8,964 km2) of it is land and 37 square miles (95 km2) of it (1.05%) is water.
Bordering counties are as follows: