Rapid City, SD population age distributions
A complete breakdown of Rapid City'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 | 4,713 | 6.23% |
| 5 to 9 years | 4,206 | 5.56% |
| 10 to 14 years | 4,698 | 6.21% |
| 15 to 19 years | 4,871 | 6.44% |
| 20 to 24 years | 5,202 | 6.88% |
| 25 to 29 years | 5,073 | 6.71% |
| 30 to 34 years | 5,395 | 7.13% |
| 35 to 39 years | 5,604 | 7.41% |
| 40 to 44 years | 3,751 | 4.96% |
| 45 to 49 years | 3,617 | 4.78% |
| 50 to 54 years | 3,931 | 5.2% |
| 55 to 59 years | 4,540 | 6% |
| 60 to 64 years | 4,931 | 6.52% |
| 65 to 69 years | 4,699 | 6.21% |
| 70 to 74 years | 4,364 | 5.77% |
| 75 to 79 years | 2,499 | 3.3% |
| 80 to 84 years | 1,502 | 1.99% |
| 85 years and over | 2,036 | 2.69% |
TABLE OF CONTENTS
Rapid City, SD population by age group
Sources: U.S. Census Bureau, American Community Survey (ACS) 2018-2022
FIGURE 1
Rapid City, SD population by age group.
The largest age group is 35 to 39 years with a population of 5,604 (7.41% of the total population).
The largest age group in Rapid City, SD was for the group of age 35 to 39 years with a population of 5,604 (7.41%), according to the 2018-2022 American Community Survey.
At the same time, the smallest age group in Rapid City, SD was the 80 to 84 years with a population of 1,502 (1.99%).
Rapid City, SD population by age cohort
To better understand the age distribution of Rapid City, SD'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
Rapid City, SD population by age cohort
The largest age group was 18 to 64 years with a population of 43,908 (58.05% of the total population).
Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:
- Rapid City 's population under 18 was 21.98%, compared to the 22.11% nationwide.
- Rapid City's working population (between 18 and 64) was 58.05%, compared to 61.36% nationwide.
- Rapid City's elderly or the senior population (over 65 age) was 19.97% as compared to 16.53% nationwide.
Rapid City, SD population pyramid
Population pyramid for Rapid City, SD 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 Rapid City's population pyramid:
- Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Rapid City, SD, is 29.0.
- Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Rapid City, SD, is 32.2.
- Total dependency ratio for Rapid City, SD is 61.2.
- Potential support ratio, which is the number of youth (working age population) per elderly, for Rapid City, SD is 3.1.
FIGURE 3
Rapid City, SD population pyramid
Rapid City population distrubution across age and gender. A wide base suggests population increase, narrow base indicates declining birth rates.
Rapid City, SD population pyramid
Here's the Rapid City, SD's male and female population across different age groups .
| Age Group | Population(Male) | Population(Female) | Total Population |
|---|---|---|---|
| Under 5 years | 2,570 | 2,143 | 4,713 |
| 5 to 9 years | 2,065 | 2,141 | 4,206 |
| 10 to 14 years | 2,457 | 2,241 | 4,698 |
| 15 to 19 years | 2,648 | 2,223 | 4,871 |
| 20 to 24 years | 2,945 | 2,257 | 5,202 |
| 25 to 29 years | 2,686 | 2,387 | 5,073 |
| 30 to 34 years | 2,900 | 2,495 | 5,395 |
| 35 to 39 years | 2,800 | 2,804 | 5,604 |
| 40 to 44 years | 1,877 | 1,874 | 3,751 |
| 45 to 49 years | 1,810 | 1,807 | 3,617 |
| 50 to 54 years | 1,950 | 1,981 | 3,931 |
| 55 to 59 years | 2,311 | 2,229 | 4,540 |
| 60 to 64 years | 2,170 | 2,761 | 4,931 |
| 65 to 69 years | 2,543 | 2,156 | 4,699 |
| 70 to 74 years | 2,021 | 2,343 | 4,364 |
| 75 to 79 years | 1,187 | 1,312 | 2,499 |
| 80 to 84 years | 690 | 812 | 1,502 |
| 85 years and over | 626 | 1,410 | 2,036 |
Things to know
What is the population of Rapid City, SD under 18?
Rapid City's population under the age of 18 is 16,624, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 21.98% of the total resident population of Rapid City, SD.
What is the aging population in Rapid City, SD?
Rapid City's population aged 65 years and above was 15,100. As per the U.S. Census Bureau's American Community Survey, this population is 19.97% of the entire population.
References
- U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates