Welcome to Lewis and Clark County ...

Time Zone: Lewis and Clark County lies in the Mountain Time Zone (MST/MDT) and observes daylight saving time.

The community of Helena is the Seat for Lewis and Clark County. Helena is also the capital of Montana.

Lewis and Clark County is one of the original counties of Montana and was founded in 1864.

From the Census Estimates for 2019, <1> Lewis and Clark had a population of 69,432 people. This is an increase of 9.21% since the last Census (which gave a population of 63,577 people in 2010).

At the time of the 2010 Census, Lewis and Clark represented 6.43% of the total population of Montana.

Websites of Interest ...

• Websites specific to Montana
  • Jump to Cyndi's List
  • Jump to Family Search
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  • Website for the Montana Historical Society

• Websites specific to Lewis and Clark County
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• Websites for nearby counties
  • Broadwater County
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  • Cascade County
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  • Flathead County
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  • Jefferson County
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  • Meagher County
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  • Powell County
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  • Teton County
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• Cemetery Information and Directories
  • Cyndi's List
  • Cemeteries of Montana
  • Cemeteries of Lewis and Clark County
  • FamilySearch.org: Cemeteries of Montana
  • Find-A-Grave: Home Page
  • Interment.net
  • Cemeteries of Montana
  • Cemeteries of Lewis and Clark County