Marion County, OR population age distribution
A complete breakdown of Marion 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 | 21,281 | 6.15% |
| 5 to 9 years | 22,645 | 6.55% |
| 10 to 14 years | 24,599 | 7.11% |
| 15 to 19 years | 24,099 | 6.97% |
| 20 to 24 years | 23,115 | 6.68% |
| 25 to 29 years | 24,268 | 7.02% |
| 30 to 34 years | 24,086 | 6.96% |
| 35 to 39 years | 23,523 | 6.8% |
| 40 to 44 years | 21,709 | 6.28% |
| 45 to 49 years | 19,969 | 5.77% |
| 50 to 54 years | 20,090 | 5.81% |
| 55 to 59 years | 19,327 | 5.59% |
| 60 to 64 years | 21,238 | 6.14% |
| 65 to 69 years | 19,345 | 5.59% |
| 70 to 74 years | 14,313 | 4.14% |
| 75 to 79 years | 9,866 | 2.85% |
| 80 to 84 years | 5,745 | 1.66% |
| 85 years and over | 6,597 | 1.91% |
TABLE OF CONTENTS
Marion County, OR population by age group
Sources: U.S. Census Bureau, American Community Survey (ACS) 2018-2022
FIGURE 1
Marion County, OR population by age group.
The largest age group is 10 to 14 years with a population of 24,599 (7.11% of the total population).
The largest age group in Marion County, OR was for the group of age 10 to 14 years with a population of 24,599 (7.11%), according to the 2018-2022 American Community Survey.
At the same time, the smallest age group in Marion County, OR was the 80 to 84 years with a population of 5,745 (1.66%).
Marion County, OR population by age cohort
To better understand the age distribution of Marion County, OR'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
Marion County, OR population by age cohort
The largest age group was 18 to 64 years with a population of 207,031 (59.87% of the total population).
Here's the population for each of the three cohorts.
| Age Group | Population | % of Total Population |
|---|---|---|
| Under 18 years | 82,918 | 23.98% |
| 18 to 64 years | 207,031 | 59.87% |
| 65 years and over | 55,866 | 16.15% |
Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:
- Marion County 's population under 18 was 23.98%, compared to the 22.11% nationwide.
- Marion County's working population (between 18 and 64) was 59.87%, compared to 61.36% nationwide.
- Marion County's elderly or the senior population (over 65 age) was 16.15% as compared to 16.53% nationwide.
Marion County, OR population pyramid
Population pyramid for Marion County, OR 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 Marion County's population pyramid:
- Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Marion County, OR, is 30.9.
- Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Marion County, OR, is 25.2.
- Total dependency ratio for Marion County, OR is 56.2.
- Potential support ratio, which is the number of youth (working age population) per elderly, for Marion County, OR is 4.0.
FIGURE 3
Marion County, OR population pyramid
Marion County population distrubution across age and gender. A wide base suggests population increase, narrow base indicates declining birth rates.
Here's the Marion County, OR's male and female population across different age groups:
| Age Group | Population(Male) | Population(Female) | Total Population |
|---|---|---|---|
| Under 5 years | 10,789 | 10,492 | 21,281 |
| 5 to 9 years | 11,584 | 11,061 | 22,645 |
| 10 to 14 years | 12,798 | 11,801 | 24,599 |
| 15 to 19 years | 12,459 | 11,640 | 24,099 |
| 20 to 24 years | 12,015 | 11,100 | 23,115 |
| 25 to 29 years | 12,673 | 11,595 | 24,268 |
| 30 to 34 years | 12,462 | 11,624 | 24,086 |
| 35 to 39 years | 12,012 | 11,511 | 23,523 |
| 40 to 44 years | 11,334 | 10,375 | 21,709 |
| 45 to 49 years | 10,370 | 9,599 | 19,969 |
| 50 to 54 years | 10,269 | 9,821 | 20,090 |
| 55 to 59 years | 9,688 | 9,639 | 19,327 |
| 60 to 64 years | 10,247 | 10,991 | 21,238 |
| 65 to 69 years | 8,978 | 10,367 | 19,345 |
| 70 to 74 years | 6,689 | 7,624 | 14,313 |
| 75 to 79 years | 4,268 | 5,598 | 9,866 |
| 80 to 84 years | 2,626 | 3,119 | 5,745 |
| 85 years and over | 2,362 | 4,235 | 6,597 |
Things to know
What is the population of Marion County, OR under 18?
Marion County's population under the age of 18 is 82,918, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 23.98% of the total resident population of Marion County, OR.
What is the aging population in Marion County, OR?
Marion County's population aged 65 years and above was 55,866. As per the U.S. Census Bureau's American Community Survey, this population is 16.15% of the entire population.
References
- U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates