United States population age distribution
A complete breakdown of United States'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 | 19,423,121 | 5.89% |
| 5 to 9 years | 20,247,138 | 6.14% |
| 10 to 14 years | 21,674,117 | 6.57% |
| 15 to 19 years | 21,654,363 | 6.57% |
| 20 to 24 years | 21,574,425 | 6.54% |
| 25 to 29 years | 22,854,328 | 6.93% |
| 30 to 34 years | 22,506,614 | 6.83% |
| 35 to 39 years | 21,920,290 | 6.65% |
| 40 to 44 years | 20,521,593 | 6.22% |
| 45 to 49 years | 20,582,187 | 6.24% |
| 50 to 54 years | 21,049,271 | 6.38% |
| 55 to 59 years | 21,928,936 | 6.65% |
| 60 to 64 years | 20,900,477 | 6.34% |
| 65 to 69 years | 17,634,322 | 5.35% |
| 70 to 74 years | 13,956,297 | 4.23% |
| 75 to 79 years | 9,066,018 | 2.75% |
| 80 to 84 years | 5,932,196 | 1.8% |
| 85 years and over | 6,299,788 | 1.91% |
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TABLE OF CONTENTS
- United States population by age group
- United States population by age cohort
- United States population pyramid
- Things to know
- References
United States population by age group
Key stats
104,573,164
Population under 25 years
87,802,825
Population aged 25-44
84,460,871
Population aged 45-64
52,888,621
Population aged 65+
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
The largest age group in United States was for the group of age 25-29 years with a population of 22,854,328 (6.93%), according to the 2021 American Community Survey.
At the same time, the smallest age group in United States was the 80-84 years with a population of 5,932,196 (1.80%).
United States population by age cohort
To better understand the age distribution of United States'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 | 74,234,075 | 22.51% |
| 18 to 64 years | 202,602,785 | 61.45% |
| 85 years and over | 52,888,621 | 16.04% |
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Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:
- United States's population under 18 was 22.51%, compared to the 22.51% nationwide.
- United States's working population (between 18 and 64) was 61.45%, compared to 61.45% nationwide.
- United States's elderly or the senior population (over 65 age) was 16.04% as compared to 16.04% nationwide.
United States population pyramid
Population pyramid for United States 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 United States's population pyramid:
- Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for United States, is 28.5.
- Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for United States, is 24.5.
- Total dependency ratio for United States is 53.0.
- Potential support ratio, which is the number of youth (working age population) per elderly, for United States is 4.1.
Here's the United States's male and female population across different age groups:
| Age Group | Population(Male) | Population(Female) | Total Population |
|---|---|---|---|
| Under 5 years | 9,940,776 | 9,482,345 | 19,423,121 |
| 5 to 9 years | 10,353,792 | 9,893,346 | 20,247,138 |
| 10 to 14 years | 11,101,231 | 10,572,886 | 21,674,117 |
| 15 to 19 years | 11,076,327 | 10,578,036 | 21,654,363 |
| 20 to 24 years | 11,019,066 | 10,555,359 | 21,574,425 |
| 25 to 29 years | 11,591,761 | 11,262,567 | 22,854,328 |
| 30 to 34 years | 11,365,543 | 11,141,071 | 22,506,614 |
| 35 to 39 years | 11,035,080 | 10,885,210 | 21,920,290 |
| 40 to 44 years | 10,294,662 | 10,226,931 | 20,521,593 |
| 45 to 49 years | 10,270,733 | 10,311,454 | 20,582,187 |
| 50 to 54 years | 10,475,868 | 10,573,403 | 21,049,271 |
| 55 to 59 years | 10,781,599 | 11,147,337 | 21,928,936 |
| 60 to 64 years | 10,137,757 | 10,762,720 | 20,900,477 |
| 65 to 69 years | 8,376,472 | 9,257,850 | 17,634,322 |
| 70 to 74 years | 6,510,539 | 7,445,758 | 13,956,297 |
| 75 to 79 years | 4,080,591 | 4,985,427 | 9,066,018 |
| 80 to 84 years | 2,517,207 | 3,414,989 | 5,932,196 |
| 85 years and over | 2,277,611 | 4,022,177 | 6,299,788 |
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Things to know
What is the population of United States under 18?
United States's population under the age of 18 is 74,234,075, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 22.51% of the total resident population of United States.
What is the aging population in United States?
United States's population aged 65 years and above was 52,888,621. As per the U.S. Census Bureau's American Community Survey, this population is 16.04% of the entire population.
References
- U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates
