Sonoma County, California Age & Gender Distribution (2024)
Population distribution by age and gender for Sonoma County, California
Sonoma County, California Age & Gender Statistics (2024)
Total Population
485,040
Median Age
42.9
Male Median
41.8
Female Median
44.4
Sonoma County, California Population Growth
Sonoma County, California Demographic Trend
Since 2010, the population of has changed by +2.3%%.
+2.3%% Growth
Sonoma County, California Age & Gender Pyramid
Figure 2: Population distribution by age and gender for 2024.
Sonoma County, California Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 42.9 | 485,040 |
| 2023 | 42.7 | 485,642 |
| 2022 | 42.7 | 488,436 |
| 2021 | 42.5 | 492,498 |
| 2020 | 42.4 | 496,801 |
| 2019 | 42.1 | 499,772 |
| 2018 | 41.7 | 501,317 |
| 2017 | 41.4 | 500,943 |
| 2016 | 41.2 | 497,776 |
| 2015 | 40.8 | 495,078 |
| 2014 | 40.5 | 491,790 |
| 2013 | 40.2 | 487,469 |
| 2012 | 39.8 | 483,456 |
| 2011 | 39.7 | 478,551 |
| 2010 | 39.5 | 474,047 |
Sonoma County, California Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 4.6% |
| 5–17 | 14.4% |
| 18–24 | 7.8% |
| 25–34 | 12.3% |
| 35–54 | 25.6% |
| 55–64 | 13.7% |
| 65+ | 21.5% |
Dependency Ratios for Sonoma County, California
- Total Dependency Ratio:
- 68.3
- Youth Dependency:
- 32.1
- Old-Age Dependency:
- 36.2
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Sonoma County, California
The median age in Sonoma County, California is 42.9 years.
According to latest Census data, the total population of Sonoma County, California is 485,040.
In Sonoma County, California, seniors (ages 65+) make up 21.5% of the population, while children under 18 represent 14.4%.
Based on historical data since 2010, the population in Sonoma County, California is aging.