Yellowstone County, Montana Age & Gender Distribution (2024)
Population distribution by age and gender for Yellowstone County, Montana
Yellowstone County, Montana Age & Gender Statistics (2024)
Total Population
168,957
Median Age
39.0
Male Median
38.3
Female Median
40.0
Yellowstone County, Montana Population Growth
Yellowstone County, Montana Demographic Trend
Since 2010, the population of has changed by +17.3%%.
+17.3%% Growth
Yellowstone County, Montana Age & Gender Pyramid
Figure 2: Population distribution by age and gender for 2024.
Yellowstone County, Montana Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 39.0 | 168,957 |
| 2023 | 38.7 | 167,340 |
| 2022 | 38.4 | 165,524 |
| 2021 | 38.5 | 163,593 |
| 2020 | 38.7 | 160,390 |
| 2019 | 38.4 | 159,008 |
| 2018 | 38.2 | 157,816 |
| 2017 | 38.3 | 156,332 |
| 2016 | 38.2 | 155,344 |
| 2015 | 38.0 | 153,692 |
| 2014 | 38.1 | 151,965 |
| 2013 | 38.3 | 150,156 |
| 2012 | 38.5 | 148,191 |
| 2011 | 38.4 | 146,151 |
| 2010 | 38.3 | 144,050 |
Yellowstone County, Montana Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.6% |
| 5–17 | 17.4% |
| 18–24 | 7.9% |
| 25–34 | 13.7% |
| 35–54 | 24.9% |
| 55–64 | 12.2% |
| 65+ | 18.3% |
Dependency Ratios for Yellowstone County, Montana
- Total Dependency Ratio:
- 70.2
- Youth Dependency:
- 39.1
- Old-Age Dependency:
- 31.1
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Yellowstone County, Montana
The median age in Yellowstone County, Montana is 39.0 years.
According to latest Census data, the total population of Yellowstone County, Montana is 168,957.
In Yellowstone County, Montana, seniors (ages 65+) make up 18.3% of the population, while children under 18 represent 17.4%.
Based on historical data since 2010, the population in Yellowstone County, Montana has remained stable.