Linn County, IA population age distribution
A complete breakdown of Linn County'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 | 13,692 | 5.97% |
| 5 to 9 years | 14,170 | 6.18% |
| 10 to 14 years | 15,132 | 6.6% |
| 15 to 19 years | 15,338 | 6.69% |
| 20 to 24 years | 15,107 | 6.59% |
| 25 to 29 years | 15,420 | 6.72% |
| 30 to 34 years | 15,045 | 6.56% |
| 35 to 39 years | 15,739 | 6.86% |
| 40 to 44 years | 14,697 | 6.41% |
| 45 to 49 years | 13,855 | 6.04% |
| 50 to 54 years | 14,061 | 6.13% |
| 55 to 59 years | 14,759 | 6.44% |
| 60 to 64 years | 14,246 | 6.21% |
| 65 to 69 years | 12,839 | 5.6% |
| 70 to 74 years | 9,039 | 3.94% |
| 75 to 79 years | 6,518 | 2.84% |
| 80 to 84 years | 4,642 | 2.02% |
| 85 years and over | 5,009 | 2.18% |
TABLE OF CONTENTS
Linn County, IA population by age group
Sources: U.S. Census Bureau, American Community Survey (ACS) 2018-2022
FIGURE 1
Linn County, IA population by age group.
The largest age group is 35 to 39 years with a population of 15,739 (6.86% of the total population).
The largest age group in Linn County, IA was for the group of age 35 to 39 years with a population of 15,739 (6.86%), according to the 2018-2022 American Community Survey.
At the same time, the smallest age group in Linn County, IA was the 80 to 84 years with a population of 4,642 (2.02%).
Linn County, IA population by age cohort
To better understand the age distribution of Linn County, IA'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
Linn County, IA population by age cohort
The largest age group was 18 to 64 years with a population of 138,992 (60.61% of the total population).
Here's the population for each of the three cohorts.
| Age Group | Population | % of Total Population |
|---|---|---|
| Under 18 years | 52,269 | 22.79% |
| 18 to 64 years | 138,992 | 60.61% |
| 65 years and over | 38,047 | 16.59% |
Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:
- Linn County 's population under 18 was 22.79%, compared to the 22.11% nationwide.
- Linn County's working population (between 18 and 64) was 60.61%, compared to 61.36% nationwide.
- Linn County's elderly or the senior population (over 65 age) was 16.59% as compared to 16.53% nationwide.
Linn County, IA population pyramid
Population pyramid for Linn County, IA 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 Linn County's population pyramid:
- Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Linn County, IA, is 29.0.
- Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Linn County, IA, is 25.7.
- Total dependency ratio for Linn County, IA is 54.7.
- Potential support ratio, which is the number of youth (working age population) per elderly, for Linn County, IA is 3.9.
FIGURE 3
Linn County, IA population pyramid
Linn County population distrubution across age and gender. A wide base suggests population increase, narrow base indicates declining birth rates.
Here's the Linn County, IA's male and female population across different age groups:
| Age Group | Population(Male) | Population(Female) | Total Population |
|---|---|---|---|
| Under 5 years | 6,910 | 6,782 | 13,692 |
| 5 to 9 years | 7,208 | 6,962 | 14,170 |
| 10 to 14 years | 7,806 | 7,326 | 15,132 |
| 15 to 19 years | 7,594 | 7,744 | 15,338 |
| 20 to 24 years | 7,711 | 7,396 | 15,107 |
| 25 to 29 years | 7,849 | 7,571 | 15,420 |
| 30 to 34 years | 7,583 | 7,462 | 15,045 |
| 35 to 39 years | 8,191 | 7,548 | 15,739 |
| 40 to 44 years | 7,390 | 7,307 | 14,697 |
| 45 to 49 years | 6,953 | 6,902 | 13,855 |
| 50 to 54 years | 7,168 | 6,893 | 14,061 |
| 55 to 59 years | 7,269 | 7,490 | 14,759 |
| 60 to 64 years | 7,134 | 7,112 | 14,246 |
| 65 to 69 years | 6,168 | 6,671 | 12,839 |
| 70 to 74 years | 4,249 | 4,790 | 9,039 |
| 75 to 79 years | 2,551 | 3,967 | 6,518 |
| 80 to 84 years | 2,002 | 2,640 | 4,642 |
| 85 years and over | 1,910 | 3,099 | 5,009 |
Things to know
What is the population of Linn County, IA under 18?
Linn County's population under the age of 18 is 52,269, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 22.79% of the total resident population of Linn County, IA.
What is the aging population in Linn County, IA?
Linn County's population aged 65 years and above was 38,047. As per the U.S. Census Bureau's American Community Survey, this population is 16.59% of the entire population.
References
- U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates