Rock County, Wisconsin Age & Gender Distribution (2024)
Population distribution by age and gender for Rock County, Wisconsin
Rock County, Wisconsin Age & Gender Statistics (2024)
Total Population
164,350
Median Age
40.3
Male Median
39.1
Female Median
41.4
Rock County, Wisconsin Population Growth
Rock County, Wisconsin Demographic Trend
Since 2010, the population of has changed by +2.7%%.
+2.7%% Growth
Rock County, Wisconsin Age & Gender Pyramid
Figure 2: Population distribution by age and gender for 2024.
Rock County, Wisconsin Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 40.3 | 164,350 |
| 2023 | 40.1 | 163,944 |
| 2022 | 40.0 | 163,817 |
| 2021 | 39.8 | 163,522 |
| 2020 | 39.8 | 162,532 |
| 2019 | 39.5 | 162,152 |
| 2018 | 39.5 | 161,769 |
| 2017 | 39.3 | 161,226 |
| 2016 | 39.1 | 160,986 |
| 2015 | 38.9 | 160,727 |
| 2014 | 38.8 | 160,465 |
| 2013 | 38.6 | 160,345 |
| 2012 | 38.3 | 160,356 |
| 2011 | 38.1 | 160,270 |
| 2010 | 37.5 | 159,964 |
Rock County, Wisconsin Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.6% |
| 5–17 | 16.8% |
| 18–24 | 8.4% |
| 25–34 | 12.4% |
| 35–54 | 25.0% |
| 55–64 | 14.0% |
| 65+ | 17.8% |
Dependency Ratios for Rock County, Wisconsin
- Total Dependency Ratio:
- 67.2
- Youth Dependency:
- 37.4
- Old-Age Dependency:
- 29.8
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Rock County, Wisconsin
The median age in Rock County, Wisconsin is 40.3 years.
According to latest Census data, the total population of Rock County, Wisconsin is 164,350.
In Rock County, Wisconsin, seniors (ages 65+) make up 17.8% of the population, while children under 18 represent 16.8%.
Based on historical data since 2010, the population in Rock County, Wisconsin is aging.