Arapahoe County, CO population age distributions
A complete breakdown of Arapahoe 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 | 38,209 | 5.84% |
| 5 to 9 years | 41,912 | 6.4% |
| 10 to 14 years | 43,057 | 6.58% |
| 15 to 19 years | 41,234 | 6.3% |
| 20 to 24 years | 39,960 | 6.11% |
| 25 to 29 years | 50,067 | 7.65% |
| 30 to 34 years | 51,910 | 7.93% |
| 35 to 39 years | 48,946 | 7.48% |
| 40 to 44 years | 47,504 | 7.26% |
| 45 to 49 years | 43,337 | 6.62% |
| 50 to 54 years | 40,617 | 6.21% |
| 55 to 59 years | 39,020 | 5.96% |
| 60 to 64 years | 38,718 | 5.92% |
| 65 to 69 years | 31,259 | 4.78% |
| 70 to 74 years | 24,900 | 3.8% |
| 75 to 79 years | 14,560 | 2.22% |
| 80 to 84 years | 9,106 | 1.39% |
| 85 years and over | 10,137 | 1.55% |
TABLE OF CONTENTS
Arapahoe County, CO population by age group
Sources: U.S. Census Bureau, American Community Survey (ACS) 2018-2022
FIGURE 1
Arapahoe County, CO population by age group.
The largest age group is 30 to 34 years with a population of 51,910 (7.93% of the total population).
The largest age group in Arapahoe County, CO was for the group of age 30 to 34 years with a population of 51,910 (7.93%), according to the 2018-2022 American Community Survey.
At the same time, the smallest age group in Arapahoe County, CO was the 80 to 84 years with a population of 9,106 (1.39%).
Arapahoe County, CO population by age cohort
To better understand the age distribution of Arapahoe County, CO'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
Arapahoe County, CO population by age cohort
The largest age group was 18 to 64 years with a population of 414,765 (63.38% of the total population).
Arapahoe County, CO population by age cohort
Here's the population for each of the three cohorts.
| Age Group | Population | % of Total Population |
|---|---|---|
| Under 18 years | 149,726 | 22.88% |
| 18 to 64 years | 414,765 | 63.38% |
| 65 years and over | 89,962 | 13.75% |
Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:
- Arapahoe County 's population under 18 was 22.88%, compared to the 22.11% nationwide.
- Arapahoe County's working population (between 18 and 64) was 63.38%, compared to 61.36% nationwide.
- Arapahoe County's elderly or the senior population (over 65 age) was 13.75% as compared to 16.53% nationwide.
Arapahoe County, CO population pyramid
Population pyramid for Arapahoe County, CO 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 Arapahoe County's population pyramid:
- Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Arapahoe County, CO, is 27.9.
- Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Arapahoe County, CO, is 20.4.
- Total dependency ratio for Arapahoe County, CO is 48.3.
- Potential support ratio, which is the number of youth (working age population) per elderly, for Arapahoe County, CO is 4.9.
FIGURE 3
Arapahoe County, CO population pyramid
Arapahoe County population distrubution across age and gender. A wide base suggests population increase, narrow base indicates declining birth rates.
Arapahoe County, CO population pyramid
Here's the Arapahoe County, CO's male and female population across different age groups .
| Age Group | Population(Male) | Population(Female) | Total Population |
|---|---|---|---|
| Under 5 years | 19,450 | 18,759 | 38,209 |
| 5 to 9 years | 20,730 | 21,182 | 41,912 |
| 10 to 14 years | 22,879 | 20,178 | 43,057 |
| 15 to 19 years | 21,303 | 19,931 | 41,234 |
| 20 to 24 years | 20,447 | 19,513 | 39,960 |
| 25 to 29 years | 25,905 | 24,162 | 50,067 |
| 30 to 34 years | 26,828 | 25,082 | 51,910 |
| 35 to 39 years | 25,181 | 23,765 | 48,946 |
| 40 to 44 years | 24,245 | 23,259 | 47,504 |
| 45 to 49 years | 21,961 | 21,376 | 43,337 |
| 50 to 54 years | 20,457 | 20,160 | 40,617 |
| 55 to 59 years | 19,539 | 19,481 | 39,020 |
| 60 to 64 years | 18,428 | 20,290 | 38,718 |
| 65 to 69 years | 14,849 | 16,410 | 31,259 |
| 70 to 74 years | 11,309 | 13,591 | 24,900 |
| 75 to 79 years | 6,216 | 8,344 | 14,560 |
| 80 to 84 years | 3,795 | 5,311 | 9,106 |
| 85 years and over | 3,634 | 6,503 | 10,137 |
Things to know
What is the population of Arapahoe County, CO under 18?
Arapahoe County's population under the age of 18 is 149,726, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 22.88% of the total resident population of Arapahoe County, CO.
What is the aging population in Arapahoe County, CO?
Arapahoe County's population aged 65 years and above was 89,962. As per the U.S. Census Bureau's American Community Survey, this population is 13.75% of the entire population.
References
- U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates