Orange County, California Age & Gender Distribution (2024)
Population distribution by age and gender for Orange County, California
Orange County, California Age & Gender Statistics (2024)
Total Population
3,165,820
Median Age
39.4
Male Median
38.3
Female Median
40.5
Orange County, California Population Growth

Orange County, California Demographic Trend
Since 2010, the population of has changed by +6.8%%.
+6.8%% Growth
Orange County, California Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Orange County, California Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 39.4 | 3,165,820 |
| 2023 | 39.1 | 3,164,063 |
| 2022 | 38.7 | 3,175,227 |
| 2021 | 38.5 | 3,182,923 |
| 2020 | 38.3 | 3,170,345 |
| 2019 | 38.1 | 3,168,044 |
| 2018 | 37.8 | 3,164,182 |
| 2017 | 37.5 | 3,155,816 |
| 2016 | 37.3 | 3,132,211 |
| 2015 | 37.1 | 3,116,069 |
| 2014 | 36.7 | 3,086,331 |
| 2013 | 36.4 | 3,051,771 |
| 2012 | 36.2 | 3,021,840 |
| 2011 | 36.0 | 2,989,948 |
| 2010 | 35.7 | 2,965,525 |
Orange County, California Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.2% |
| 5–17 | 15.8% |
| 18–24 | 8.9% |
| 25–34 | 14.2% |
| 35–54 | 26.5% |
| 55–64 | 13.1% |
| 65+ | 16.3% |
Dependency Ratios for Orange County, California
- Total Dependency Ratio:
- 59.4
- Youth Dependency:
- 33.5
- Old-Age Dependency:
- 25.9
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Orange County, California
The median age in Orange County, California is 39.4 years.
According to latest Census data, the total population of Orange County, California is 3,165,820.
In Orange County, California, seniors (ages 65+) make up 16.3% of the population, while children under 18 represent 15.8%.
Based on historical data since 2010, the population in Orange County, California is aging.