St. Joseph County, MI population age distributions
A complete breakdown of St. Joseph 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 | 3,811 | 6.26% |
| 5 to 9 years | 4,318 | 7.09% |
| 10 to 14 years | 4,048 | 6.65% |
| 15 to 19 years | 4,138 | 6.8% |
| 20 to 24 years | 3,447 | 5.66% |
| 25 to 29 years | 3,605 | 5.92% |
| 30 to 34 years | 3,601 | 5.91% |
| 35 to 39 years | 3,601 | 5.91% |
| 40 to 44 years | 3,594 | 5.9% |
| 45 to 49 years | 3,335 | 5.48% |
| 50 to 54 years | 3,686 | 6.05% |
| 55 to 59 years | 4,615 | 7.58% |
| 60 to 64 years | 4,002 | 6.57% |
| 65 to 69 years | 3,831 | 6.29% |
| 70 to 74 years | 2,900 | 4.76% |
| 75 to 79 years | 1,873 | 3.08% |
| 80 to 84 years | 1,426 | 2.34% |
| 85 years and over | 1,056 | 1.73% |
TABLE OF CONTENTS
St. Joseph County, MI population by age group
Sources: U.S. Census Bureau, American Community Survey (ACS) 2018-2022
FIGURE 1
St. Joseph County, MI population by age group.
The largest age group is 55 to 59 years with a population of 4,615 (7.58% of the total population).
The largest age group in St. Joseph County, MI was for the group of age 55 to 59 years with a population of 4,615 (7.58%), according to the 2018-2022 American Community Survey.
At the same time, the smallest age group in St. Joseph County, MI was the 85 years and over with a population of 1,056 (1.73%).
St. Joseph County, MI population by age cohort
To better understand the age distribution of St. Joseph County, MI'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
St. Joseph County, MI population by age cohort
The largest age group was 18 to 64 years with a population of 35,007 (57.50% of the total population).
St. Joseph County, MI population by age cohort
Here's the population for each of the three cohorts.
| Age Group | Population | % of Total Population |
|---|---|---|
| Under 18 years | 14,794 | 24.3% |
| 18 to 64 years | 35,007 | 57.5% |
| 65 years and over | 11,086 | 18.21% |
Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:
- St. Joseph County 's population under 18 was 24.30%, compared to the 22.11% nationwide.
- St. Joseph County's working population (between 18 and 64) was 57.50%, compared to 61.36% nationwide.
- St. Joseph County's elderly or the senior population (over 65 age) was 18.21% as compared to 16.53% nationwide.
St. Joseph County, MI population pyramid
Population pyramid for St. Joseph County, MI 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 St. Joseph County's population pyramid:
- Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for St. Joseph County, MI, is 32.4.
- Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for St. Joseph County, MI, is 29.5.
- Total dependency ratio for St. Joseph County, MI is 61.8.
- Potential support ratio, which is the number of youth (working age population) per elderly, for St. Joseph County, MI is 3.4.
FIGURE 3
St. Joseph County, MI population pyramid
St. Joseph County population distrubution across age and gender. A wide base suggests population increase, narrow base indicates declining birth rates.
St. Joseph County, MI population pyramid
Here's the St. Joseph County, MI's male and female population across different age groups .
| Age Group | Population(Male) | Population(Female) | Total Population |
|---|---|---|---|
| Under 5 years | 1,990 | 1,821 | 3,811 |
| 5 to 9 years | 2,410 | 1,908 | 4,318 |
| 10 to 14 years | 1,902 | 2,146 | 4,048 |
| 15 to 19 years | 2,069 | 2,069 | 4,138 |
| 20 to 24 years | 1,833 | 1,614 | 3,447 |
| 25 to 29 years | 1,889 | 1,716 | 3,605 |
| 30 to 34 years | 1,833 | 1,768 | 3,601 |
| 35 to 39 years | 1,917 | 1,684 | 3,601 |
| 40 to 44 years | 1,807 | 1,787 | 3,594 |
| 45 to 49 years | 1,678 | 1,657 | 3,335 |
| 50 to 54 years | 1,900 | 1,786 | 3,686 |
| 55 to 59 years | 2,345 | 2,270 | 4,615 |
| 60 to 64 years | 1,990 | 2,012 | 4,002 |
| 65 to 69 years | 1,905 | 1,926 | 3,831 |
| 70 to 74 years | 1,345 | 1,555 | 2,900 |
| 75 to 79 years | 826 | 1,047 | 1,873 |
| 80 to 84 years | 645 | 781 | 1,426 |
| 85 years and over | 387 | 669 | 1,056 |
Things to know
What is the population of St. Joseph County, MI under 18?
St. Joseph County's population under the age of 18 is 14,794, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 24.30% of the total resident population of St. Joseph County, MI.
What is the aging population in St. Joseph County, MI?
St. Joseph County's population aged 65 years and above was 11,086. As per the U.S. Census Bureau's American Community Survey, this population is 18.21% of the entire population.
References
- U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates