Rock Island, IL population age distribution
A complete breakdown of Rock Island'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 | 2,316 | 6.17% |
5 to 9 years | 1,996 | 5.32% |
10 to 14 years | 2,602 | 6.94% |
15 to 19 years | 3,652 | 9.73% |
20 to 24 years | 3,203 | 8.54% |
25 to 29 years | 2,206 | 5.88% |
30 to 34 years | 2,606 | 6.95% |
35 to 39 years | 2,214 | 5.9% |
40 to 44 years | 2,080 | 5.54% |
45 to 49 years | 1,905 | 5.08% |
50 to 54 years | 1,827 | 4.87% |
55 to 59 years | 2,157 | 5.75% |
60 to 64 years | 2,377 | 6.34% |
65 to 69 years | 2,252 | 6% |
70 to 74 years | 1,492 | 3.98% |
75 to 79 years | 923 | 2.46% |
80 to 84 years | 765 | 2.04% |
85 years and over | 946 | 2.52% |
TABLE OF CONTENTS
Rock Island, IL population by age group
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
The largest age group in Rock Island, IL was for the group of age 15-19 years with a population of 3,652 (9.73%), according to the 2021 American Community Survey.
At the same time, the smallest age group in Rock Island, IL was the 80-84 years with a population of 765 (2.04%).
Rock Island, IL population by age cohort
To better understand the age distribution of Rock Island, IL'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
Here's the population for each of the three cohorts.
Age Group | Population | % of Total Population |
---|---|---|
Under 18 years | 8,366 | 22.3% |
18 to 64 years | 22,775 | 60.7% |
85 years and over | 6,378 | 17% |
Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:
- Rock Island's population under 18 was 22.30%, compared to the 22.51% nationwide.
- Rock Island's working population (between 18 and 64) was 60.70%, compared to 61.45% nationwide.
- Rock Island's elderly or the senior population (over 65 age) was 17.00% as compared to 16.04% nationwide.
Rock Island, IL population pyramid
Population pyramid for Rock Island, IL 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 Rock Island's population pyramid:
- Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Rock Island, IL, is 28.5.
- Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Rock Island, IL, is 26.3.
- Total dependency ratio for Rock Island, IL is 54.9.
- Potential support ratio, which is the number of youth (working age population) per elderly, for Rock Island, IL is 3.8.
Here's the Rock Island, IL's male and female population across different age groups:
Age Group | Population(Male) | Population(Female) | Total Population |
---|---|---|---|
Under 5 years | 1,325 | 991 | 2,316 |
5 to 9 years | 946 | 1,050 | 1,996 |
10 to 14 years | 1,181 | 1,421 | 2,602 |
15 to 19 years | 1,694 | 1,958 | 3,652 |
20 to 24 years | 1,738 | 1,465 | 3,203 |
25 to 29 years | 1,137 | 1,069 | 2,206 |
30 to 34 years | 1,606 | 1,000 | 2,606 |
35 to 39 years | 1,063 | 1,151 | 2,214 |
40 to 44 years | 1,016 | 1,064 | 2,080 |
45 to 49 years | 947 | 958 | 1,905 |
50 to 54 years | 981 | 846 | 1,827 |
55 to 59 years | 1,170 | 987 | 2,157 |
60 to 64 years | 1,219 | 1,158 | 2,377 |
65 to 69 years | 1,084 | 1,168 | 2,252 |
70 to 74 years | 623 | 869 | 1,492 |
75 to 79 years | 388 | 535 | 923 |
80 to 84 years | 330 | 435 | 765 |
85 years and over | 309 | 637 | 946 |
Things to know
What is the population of Rock Island, IL under 18?
Rock Island's population under the age of 18 is 8,366, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 22.30% of the total resident population of Rock Island, IL.
What is the aging population in Rock Island, IL?
Rock Island's population aged 65 years and above was 6,378. As per the U.S. Census Bureau's American Community Survey, this population is 17.00% of the entire population.
References
- U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates