Lewis and Clark County, Montana Age & Gender Distribution (2024)
Population distribution by age and gender for Lewis and Clark County, Montana
Lewis and Clark County, Montana Age & Gender Statistics (2024)
Total Population
73,464
Median Age
41.8
Male Median
40.9
Female Median
42.6
Lewis and Clark County, Montana Population Growth
Lewis and Clark County, Montana Demographic Trend
Since 2010, the population of has changed by +19.2%%.
+19.2%% Growth
Lewis and Clark County, Montana Age & Gender Pyramid
Figure 2: Population distribution by age and gender for 2024.
Lewis and Clark County, Montana Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 41.8 | 73,464 |
| 2023 | 41.3 | 72,580 |
| 2022 | 41.2 | 71,487 |
| 2021 | 40.9 | 70,340 |
| 2020 | 41.3 | 68,714 |
| 2019 | 40.8 | 67,805 |
| 2018 | 41.0 | 67,077 |
| 2017 | 41.1 | 66,290 |
| 2016 | 41.2 | 65,989 |
| 2015 | 40.9 | 65,357 |
| 2014 | 41.0 | 64,772 |
| 2013 | 40.8 | 64,143 |
| 2012 | 40.7 | 63,432 |
| 2011 | 40.7 | 62,597 |
| 2010 | 40.7 | 61,643 |
Lewis and Clark County, Montana Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.2% |
| 5–17 | 16.0% |
| 18–24 | 7.5% |
| 25–34 | 12.0% |
| 35–54 | 25.1% |
| 55–64 | 14.0% |
| 65+ | 20.2% |
Dependency Ratios for Lewis and Clark County, Montana
- Total Dependency Ratio:
- 70.6
- Youth Dependency:
- 36.2
- Old-Age Dependency:
- 34.5
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Lewis and Clark County, Montana
The median age in Lewis and Clark County, Montana is 41.8 years.
According to latest Census data, the total population of Lewis and Clark County, Montana is 73,464.
In Lewis and Clark County, Montana, seniors (ages 65+) make up 20.2% of the population, while children under 18 represent 16.0%.
Based on historical data since 2010, the population in Lewis and Clark County, Montana has remained stable.