Lewis and Clark County, MT — Demographics & Population

Population, age distribution, race & ethnicity, and education data

Population Overview

Source: Census Bureau ACS (2023)

Total Population

72,580

Male

36,100

49.7%

Female

36,480

50.3%

Median Age

41.3 yrs

Avg Household Size

2.3

Foreign Born

1.9%

Race & Ethnicity

Source: Census Bureau ACS (2023)

Age Distribution

Source: Census Bureau ACS (2023)

Education

Source: Census Bureau ACS (2023)
Bachelor's or Higher
30.4%
High School or Higher
47.1%

Other Demographics

Source: Census Bureau ACS (2023)

Veterans

8.1%

Disability

0.0%

Non-English Home

3.7%

Married

43.0%

Lewis and Clark County, MT has a population of 72,580 according to 2023 Census Bureau estimates. The median age is 41.3 years. The largest racial or ethnic group is White at 91.5% of the population. 30.4% of residents hold a bachelor's degree or higher. 1.9% of residents are foreign-born.

More Lewis and Clark County Data

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