Matanuska-Susitna Borough, AK population age distribution
A complete breakdown of Matanuska-Susitna Borough'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 | 7,205 | 6.75% |
5 to 9 years | 7,981 | 7.47% |
10 to 14 years | 8,491 | 7.95% |
15 to 19 years | 7,332 | 6.86% |
20 to 24 years | 6,002 | 5.62% |
25 to 29 years | 7,226 | 6.77% |
30 to 34 years | 7,763 | 7.27% |
35 to 39 years | 7,728 | 7.24% |
40 to 44 years | 6,972 | 6.53% |
45 to 49 years | 6,482 | 6.07% |
50 to 54 years | 6,516 | 6.1% |
55 to 59 years | 7,409 | 6.94% |
60 to 64 years | 6,644 | 6.22% |
65 to 69 years | 5,626 | 5.27% |
70 to 74 years | 3,450 | 3.23% |
75 to 79 years | 1,942 | 1.82% |
80 to 84 years | 1,091 | 1.02% |
85 years and over | 947 | 0.89% |
TABLE OF CONTENTS
Matanuska-Susitna Borough, AK population by age group
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

The largest age group in Matanuska-Susitna Borough, AK was for the group of age 10-14 years with a population of 8,491 (7.95%), according to the 2021 American Community Survey.
At the same time, the smallest age group in Matanuska-Susitna Borough, AK was the 85+ years with a population of 947 (0.89%).
Matanuska-Susitna Borough, AK population by age cohort
To better understand the age distribution of Matanuska-Susitna Borough, AK'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 | 28,583 | 26.76% |
18 to 64 years | 65,168 | 61.01% |
85 years and over | 13,056 | 12.22% |
Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:
- Matanuska-Susitna Borough's population under 18 was 26.76%, compared to the 22.51% nationwide.
- Matanuska-Susitna Borough's working population (between 18 and 64) was 61.01%, compared to 61.45% nationwide.
- Matanuska-Susitna Borough's elderly or the senior population (over 65 age) was 12.22% as compared to 16.04% nationwide.
Matanuska-Susitna Borough, AK population pyramid
Population pyramid for Matanuska-Susitna Borough, AK 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 Matanuska-Susitna Borough's population pyramid:
- Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Matanuska-Susitna Borough, AK, is 33.8.
- Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Matanuska-Susitna Borough, AK, is 18.6.
- Total dependency ratio for Matanuska-Susitna Borough, AK is 52.4.
- Potential support ratio, which is the number of youth (working age population) per elderly, for Matanuska-Susitna Borough, AK is 5.4.

Here's the Matanuska-Susitna Borough, AK's male and female population across different age groups:
Age Group | Population(Male) | Population(Female) | Total Population |
---|---|---|---|
Under 5 years | 3,696 | 3,509 | 7,205 |
5 to 9 years | 4,017 | 3,964 | 7,981 |
10 to 14 years | 4,485 | 4,006 | 8,491 |
15 to 19 years | 3,817 | 3,515 | 7,332 |
20 to 24 years | 3,323 | 2,679 | 6,002 |
25 to 29 years | 3,850 | 3,376 | 7,226 |
30 to 34 years | 4,068 | 3,695 | 7,763 |
35 to 39 years | 4,137 | 3,591 | 7,728 |
40 to 44 years | 3,510 | 3,462 | 6,972 |
45 to 49 years | 3,412 | 3,070 | 6,482 |
50 to 54 years | 3,443 | 3,073 | 6,516 |
55 to 59 years | 3,755 | 3,654 | 7,409 |
60 to 64 years | 3,599 | 3,045 | 6,644 |
65 to 69 years | 2,903 | 2,723 | 5,626 |
70 to 74 years | 1,717 | 1,733 | 3,450 |
75 to 79 years | 996 | 946 | 1,942 |
80 to 84 years | 569 | 522 | 1,091 |
85 years and over | 365 | 582 | 947 |
Things to know
What is the population of Matanuska-Susitna Borough, AK under 18?
Matanuska-Susitna Borough's population under the age of 18 is 28,583, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 26.76% of the total resident population of Matanuska-Susitna Borough, AK.
What is the aging population in Matanuska-Susitna Borough, AK?
Matanuska-Susitna Borough's population aged 65 years and above was 13,056. As per the U.S. Census Bureau's American Community Survey, this population is 12.22% of the entire population.
References
- U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates