O'Brien Township, Minnesota population by age group
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
The largest age group in O'Brien Township, Minnesota was for the group of age 60-64 years with a population of 10 (34.48%), according to the 2021 American Community Survey.
At the same time, the smallest age group in O'Brien Township, Minnesota was the 0-4 years with a population of 0 (0.00%).
O'Brien Township, Minnesota population by age cohort
To better understand the age distribution of O'Brien Township, Minnesota'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 | 0 | - |
| 18 to 64 years | 24 | 82.76% |
| 85 years and over | 5 | 17.24% |
Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:
- O'Brien township's population under 18 was 0.00%, compared to the 22.51% nationwide.
- O'Brien township's working population (between 18 and 64) was 82.76%, compared to 61.45% nationwide.
- O'Brien township's elderly or the senior population (over 65 age) was 17.24% as compared to 16.04% nationwide.
O'Brien Township, Minnesota population pyramid
Population pyramid for O'Brien Township, Minnesota 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 O'Brien township's population pyramid:
- Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for O'Brien Township, Minnesota, is 0.0.
- Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for O'Brien Township, Minnesota, is 20.8.
- Total dependency ratio for O'Brien Township, Minnesota is 20.8.
- Potential support ratio, which is the number of youth (working age population) per elderly, for O'Brien Township, Minnesota is 4.8.
Here's the O'Brien Township, Minnesota's male and female population across different age groups:
| Age Group | Population(Male) | Population(Female) | Total Population |
|---|---|---|---|
| Under 5 years | 0 | 0 | 0 |
| 5 to 9 years | 0 | 0 | 0 |
| 10 to 14 years | 0 | 0 | 0 |
| 15 to 19 years | 0 | 0 | 0 |
| 20 to 24 years | 0 | 0 | 0 |
| 25 to 29 years | 0 | 0 | 0 |
| 30 to 34 years | 0 | 0 | 0 |
| 35 to 39 years | 0 | 0 | 0 |
| 40 to 44 years | 1 | 0 | 1 |
| 45 to 49 years | 0 | 2 | 2 |
| 50 to 54 years | 0 | 2 | 2 |
| 55 to 59 years | 3 | 6 | 9 |
| 60 to 64 years | 8 | 2 | 10 |
| 65 to 69 years | 1 | 0 | 1 |
| 70 to 74 years | 0 | 0 | 0 |
| 75 to 79 years | 0 | 0 | 0 |
| 80 to 84 years | 1 | 3 | 4 |
| 85 years and over | 0 | 0 | 0 |