Janesville, WI population age distributions
A complete breakdown of Janesville's age demographics from 0 to 85 years, distributed across 18 age groups is listed in the table below.
| Age Group | Population | % of Total Population |
|---|---|---|
| Under 5 years | 3,464 | 5.27% |
| 5 to 9 years | 4,265 | 6.49% |
| 10 to 14 years | 4,274 | 6.51% |
| 15 to 19 years | 3,743 | 5.7% |
| 20 to 24 years | 4,215 | 6.42% |
| 25 to 29 years | 4,405 | 6.71% |
| 30 to 34 years | 4,088 | 6.23% |
| 35 to 39 years | 4,767 | 7.26% |
| 40 to 44 years | 4,476 | 6.82% |
| 45 to 49 years | 4,360 | 6.64% |
| 50 to 54 years | 3,906 | 5.95% |
| 55 to 59 years | 4,300 | 6.55% |
| 60 to 64 years | 4,289 | 6.53% |
| 65 to 69 years | 3,436 | 5.23% |
| 70 to 74 years | 2,846 | 4.33% |
| 75 to 79 years | 1,484 | 2.26% |
| 80 to 84 years | 1,723 | 2.62% |
| 85 years and over | 1,628 | 2.48% |
TABLE OF CONTENTS
Janesville, WI population by age group
Sources: U.S. Census Bureau, American Community Survey (ACS) 2018-2022
FIGURE 1
Janesville, WI population by age group.
The largest age group is 35 to 39 years with a population of 4,767 (7.26% of the total population).
The largest age group in Janesville, WI was for the group of age 35 to 39 years with a population of 4,767 (7.26%), according to the 2018-2022 American Community Survey.
At the same time, the smallest age group in Janesville, WI was the 75 to 79 years with a population of 1,484 (2.26%).
Janesville, WI population by age cohort
To better understand the age distribution of Janesville, WI's population, we divided it into the following 3 cohorts:
- Children : Under the age of 18 years
- Adults (working population): Between the age of 18 and 64 years
- Seniors: 65 years and above
FIGURE 2
Janesville, WI population by age cohort
The largest age group was 18 to 64 years with a population of 40,011 (60.93% of the total population).
Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:
- Janesville 's population under 18 was 22.14%, compared to the 22.11% nationwide.
- Janesville's working population (between 18 and 64) was 60.93%, compared to 61.36% nationwide.
- Janesville's elderly or the senior population (over 65 age) was 16.93% as compared to 16.53% nationwide.
Janesville, WI population pyramid
Population pyramid for Janesville, WI is charted below using the estimates from U.S. Census Bureau's American Community Survey 5-Year estimates. A wide base suggests population increase, narrow base indicates declining birth rates.
Key stats from our analysis of the Janesville's population pyramid:
- Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Janesville, WI, is 28.2.
- Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Janesville, WI, is 26.1.
- Total dependency ratio for Janesville, WI is 54.3.
- Potential support ratio, which is the number of youth (working age population) per elderly, for Janesville, WI is 3.8.
FIGURE 3
Janesville, WI population pyramid
Janesville population distrubution across age and gender. A wide base suggests population increase, narrow base indicates declining birth rates.
Janesville, WI population pyramid
Here's the Janesville, WI's male and female population across different age groups .
| Age Group | Population(Male) | Population(Female) | Total Population |
|---|---|---|---|
| Under 5 years | 1,891 | 1,573 | 3,464 |
| 5 to 9 years | 2,092 | 2,173 | 4,265 |
| 10 to 14 years | 2,334 | 1,940 | 4,274 |
| 15 to 19 years | 2,139 | 1,604 | 3,743 |
| 20 to 24 years | 2,154 | 2,061 | 4,215 |
| 25 to 29 years | 2,094 | 2,311 | 4,405 |
| 30 to 34 years | 2,315 | 1,773 | 4,088 |
| 35 to 39 years | 2,191 | 2,576 | 4,767 |
| 40 to 44 years | 2,314 | 2,162 | 4,476 |
| 45 to 49 years | 2,302 | 2,058 | 4,360 |
| 50 to 54 years | 1,926 | 1,980 | 3,906 |
| 55 to 59 years | 2,067 | 2,233 | 4,300 |
| 60 to 64 years | 2,075 | 2,214 | 4,289 |
| 65 to 69 years | 1,522 | 1,914 | 3,436 |
| 70 to 74 years | 1,239 | 1,607 | 2,846 |
| 75 to 79 years | 636 | 848 | 1,484 |
| 80 to 84 years | 671 | 1,052 | 1,723 |
| 85 years and over | 537 | 1,091 | 1,628 |
Things to know
What is the population of Janesville, WI under 18?
Janesville's population under the age of 18 is 14,541, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 22.14% of the total resident population of Janesville, WI.
What is the aging population in Janesville, WI?
Janesville's population aged 65 years and above was 11,117. As per the U.S. Census Bureau's American Community Survey, this population is 16.93% of the entire population.
References
- U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates