Ada County, Idaho Age & Gender Distribution (2024)
Population distribution by age and gender for Ada County, Idaho
Ada County, Idaho Age & Gender Statistics (2024)
Total Population
518,935
Median Age
38.4
Male Median
37.6
Female Median
39.4
Ada County, Idaho Population Growth
Ada County, Idaho Demographic Trend
Since 2010, the population of has changed by +36.3%%.
+36.3%% Growth
Ada County, Idaho Age & Gender Pyramid
Figure 2: Population distribution by age and gender for 2024.
Ada County, Idaho Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 38.4 | 518,935 |
| 2023 | 38.3 | 508,052 |
| 2022 | 38.1 | 497,494 |
| 2021 | 37.7 | 485,246 |
| 2020 | 37.2 | 469,473 |
| 2019 | 37.0 | 456,849 |
| 2018 | 36.7 | 446,052 |
| 2017 | 36.4 | 435,117 |
| 2016 | 36.1 | 425,798 |
| 2015 | 35.8 | 417,501 |
| 2014 | 35.5 | 409,239 |
| 2013 | 35.2 | 401,673 |
| 2012 | 34.9 | 394,961 |
| 2011 | 34.7 | 388,174 |
| 2010 | 34.4 | 380,718 |
Ada County, Idaho Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.1% |
| 5–17 | 16.9% |
| 18–24 | 8.8% |
| 25–34 | 13.9% |
| 35–54 | 27.2% |
| 55–64 | 11.8% |
| 65+ | 16.2% |
Dependency Ratios for Ada County, Idaho
- Total Dependency Ratio:
- 61.9
- Youth Dependency:
- 35.6
- Old-Age Dependency:
- 26.3
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Ada County, Idaho
The median age in Ada County, Idaho is 38.4 years.
According to latest Census data, the total population of Ada County, Idaho is 518,935.
In Ada County, Idaho, seniors (ages 65+) make up 16.2% of the population, while children under 18 represent 16.9%.
Based on historical data since 2010, the population in Ada County, Idaho is aging.