Lewis and Clark County, Montana

Lewis and Clark County
Lewis and Clark County
County
	The "Sleeping Giant" formation north of Helena
	Seal
	Location within the U.S. state of Montana
	Montana's location within the U.S.
	Coordinates: 47°07′N 112°23′W / 47.11°N 112.38°W
Country	United States
State	Montana
Founded	June 2, 1865
Named for	Meriwether Lewis and William Clark
Seat	Helena
Largest city	Helena
Area
• Total	3,498 sq mi (9,060 km2)
• Land	3,459 sq mi (8,960 km2)
• Water	39 sq mi (100 km2) 1.1%
Population (2020)
• Total	70,973
• Estimate (2022)	73,832
• Density	20/sq mi (7.8/km2)
Time zone	UTC−7 (Mountain)
• Summer (DST)	UTC−6 (MDT)
Congressional district	2nd
Website	www.lccountymt.gov/home.html
	Montana county number 05;

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.^[1] Its county seat is Helena,^[2] 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.^[3]^[4]

Lewis and Clark County is part of the Helena, Montana Micropolitan Statistical Area.

^ "State & County QuickFacts". United States Census Bureau. Retrieved April 5, 2023.
^ "Find a County". National Association of Counties. Retrieved June 7, 2011.
^ "Montana Place Names Companion". Montana Place Names From Alzada to Zortman. Montana Historical Society Research Center. Retrieved December 1, 2014.
^ Gannett, Henry (1905). The Origin of Certain Place Names in the United States. U.S. Government Printing Office. p. 185.