Cape Girardeau County, MO population age distribution
A complete breakdown of Cape Girardeau 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 | 4,671 | 5.76% |
5 to 9 years | 5,159 | 6.36% |
10 to 14 years | 4,802 | 5.92% |
15 to 19 years | 6,135 | 7.57% |
20 to 24 years | 8,105 | 10% |
25 to 29 years | 5,157 | 6.36% |
30 to 34 years | 5,032 | 6.21% |
35 to 39 years | 4,685 | 5.78% |
40 to 44 years | 4,639 | 5.72% |
45 to 49 years | 4,368 | 5.39% |
50 to 54 years | 4,633 | 5.71% |
55 to 59 years | 5,049 | 6.23% |
60 to 64 years | 5,226 | 6.45% |
65 to 69 years | 4,427 | 5.46% |
70 to 74 years | 3,326 | 4.1% |
75 to 79 years | 2,373 | 2.93% |
80 to 84 years | 1,538 | 1.9% |
85 years and over | 1,761 | 2.17% |
TABLE OF CONTENTS
Cape Girardeau County, MO population by age group
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

The largest age group in Cape Girardeau County, MO was for the group of age 20-24 years with a population of 8,105 (10.00%), according to the 2021 American Community Survey.
At the same time, the smallest age group in Cape Girardeau County, MO was the 80-84 years with a population of 1,538 (1.90%).
Cape Girardeau County, MO population by age cohort
To better understand the age distribution of Cape Girardeau County, MO'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 | 17,565 | 21.66% |
18 to 64 years | 50,096 | 61.78% |
85 years and over | 13,425 | 16.56% |
Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:
- Cape Girardeau County's population under 18 was 21.66%, compared to the 22.51% nationwide.
- Cape Girardeau County's working population (between 18 and 64) was 61.78%, compared to 61.45% nationwide.
- Cape Girardeau County's elderly or the senior population (over 65 age) was 16.56% as compared to 16.04% nationwide.
Cape Girardeau County, MO population pyramid
Population pyramid for Cape Girardeau County, MO 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 Cape Girardeau County's population pyramid:
- Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Cape Girardeau County, MO, is 27.6.
- Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Cape Girardeau County, MO, is 25.3.
- Total dependency ratio for Cape Girardeau County, MO is 52.9.
- Potential support ratio, which is the number of youth (working age population) per elderly, for Cape Girardeau County, MO is 4.0.

Here's the Cape Girardeau County, MO's male and female population across different age groups:
Age Group | Population(Male) | Population(Female) | Total Population |
---|---|---|---|
Under 5 years | 2,420 | 2,251 | 4,671 |
5 to 9 years | 2,678 | 2,481 | 5,159 |
10 to 14 years | 2,420 | 2,382 | 4,802 |
15 to 19 years | 2,925 | 3,210 | 6,135 |
20 to 24 years | 3,820 | 4,285 | 8,105 |
25 to 29 years | 2,638 | 2,519 | 5,157 |
30 to 34 years | 2,402 | 2,630 | 5,032 |
35 to 39 years | 2,572 | 2,113 | 4,685 |
40 to 44 years | 2,138 | 2,501 | 4,639 |
45 to 49 years | 2,220 | 2,148 | 4,368 |
50 to 54 years | 2,239 | 2,394 | 4,633 |
55 to 59 years | 2,415 | 2,634 | 5,049 |
60 to 64 years | 2,622 | 2,604 | 5,226 |
65 to 69 years | 2,115 | 2,312 | 4,427 |
70 to 74 years | 1,485 | 1,841 | 3,326 |
75 to 79 years | 1,103 | 1,270 | 2,373 |
80 to 84 years | 595 | 943 | 1,538 |
85 years and over | 565 | 1,196 | 1,761 |
Things to know
What is the population of Cape Girardeau County, MO under 18?
Cape Girardeau County's population under the age of 18 is 17,565, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 21.66% of the total resident population of Cape Girardeau County, MO.
What is the aging population in Cape Girardeau County, MO?
Cape Girardeau County's population aged 65 years and above was 13,425. As per the U.S. Census Bureau's American Community Survey, this population is 16.56% of the entire population.
References
- U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates