San Joaquin County, California Age & Gender Distribution (2024)
Population distribution by age and gender for San Joaquin County, California
San Joaquin County, California Age & Gender Statistics (2024)
Total Population
797,334
Median Age
35.4
Male Median
34.6
Female Median
36.2
San Joaquin County, California Population Growth

San Joaquin County, California Demographic Trend
Since 2010, the population of has changed by +18.4%%.
+18.4%% Growth
San Joaquin County, California Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
San Joaquin County, California Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 35.4 | 797,334 |
| 2023 | 35.2 | 787,416 |
| 2022 | 34.8 | 779,445 |
| 2021 | 34.6 | 771,406 |
| 2020 | 34.4 | 751,615 |
| 2019 | 34.3 | 742,603 |
| 2018 | 34.1 | 732,212 |
| 2017 | 33.9 | 724,153 |
| 2016 | 33.7 | 714,860 |
| 2015 | 33.5 | 708,554 |
| 2014 | 33.2 | 701,050 |
| 2013 | 32.9 | 693,177 |
| 2012 | 32.6 | 687,036 |
| 2011 | 32.5 | 680,277 |
| 2010 | 32.3 | 673,613 |
San Joaquin County, California Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 6.5% |
| 5–17 | 19.7% |
| 18–24 | 9.4% |
| 25–34 | 13.8% |
| 35–54 | 26.0% |
| 55–64 | 11.1% |
| 65+ | 13.5% |
Dependency Ratios for San Joaquin County, California
- Total Dependency Ratio:
- 65.8
- Youth Dependency:
- 43.4
- Old-Age Dependency:
- 22.4
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for San Joaquin County, California
The median age in San Joaquin County, California is 35.4 years.
According to latest Census data, the total population of San Joaquin County, California is 797,334.
In San Joaquin County, California, seniors (ages 65+) make up 13.5% of the population, while children under 18 represent 19.7%.
Based on historical data since 2010, the population in San Joaquin County, California is aging.