Shire of Serpentine JarrahdalePopulation forecast
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Shire of Serpentine-Jarrahdale

Population and age structure

Between 2011 and 2026, the age structure forecasts for the Shire of Serpentine-Jarrahdale indicate a 150.4% increase in population under working age, a 151.9% increase in population of retirement age, and a 153.7% increase in population of working age.

Knowledge of how the age structure of the population is changing is essential for planning age-based facilities and services, such as child care, recreation and aged care.

The forecast age groups of the Shire of Serpentine-Jarrahdale is a function of the current age of the population (people aging each year, being born and dying) as well as the age of people migrating into and out of the area. This in turn is driven by location (fringe, city centre, regional or rural) the existing housing stock (separate dwellings, medium or high density), the amount and type of new residential development (same as existing stock, or diversifying) and where the area is in a cycle of change. We call this the area’s residential role and function. You can learn more about this in the section household and suburb life cycles.

Forecast age structure - 5 year age groups
Shire of Serpentine-Jarrahdale - Total persons201120262036Change between 2011 and 2036
Age group (years)Number%Number%Number%Number
0 to 4 1,3577.33,5257.55,0537.4+3,696
5 to 9 1,4417.83,5687.64,8727.2+3,432
10 to 14 1,4547.93,5537.64,8787.2+3,424
15 to 19 1,3537.33,4437.44,8827.2+3,529
20 to 24 1,2506.83,6937.95,4308.0+4,180
25 to 29 1,1166.03,9098.45,7198.4+4,603
30 to 34 1,0965.93,7428.05,4658.0+4,370
35 to 39 1,3727.43,4707.44,9787.3+3,606
40 to 44 1,5648.53,3017.14,5896.7+3,024
45 to 49 1,4798.03,0926.64,4436.5+2,963
50 to 54 1,2486.72,7235.84,0726.0+2,825
55 to 59 1,0925.92,4595.33,6595.4+2,567
60 to 64 1,0085.52,0814.53,1474.6+2,138
65 to 69 6593.61,5203.32,4653.6+1,806
70 to 74 4462.41,1232.41,8202.7+1,373
75 to 79 2591.47461.61,1731.7+914
80 to 84 1730.94340.97291.1+556
85 and over1330.73840.86390.9+505
Total persons18,501100.046,764100.068,012100.0+49,511

Population and household forecasts, 2011 to 2036, prepared by .id , the population experts, March 2017.

Forecast age structure - 5 year age groups
Forecast age structure - 5 year age groups Forecast persons aged 85+,  2036: 639 Forecast persons aged 80-84,  2036: 729 Forecast persons aged 75-79,  2036: 1,173 Forecast persons aged 70-74,  2036: 1,820 Forecast persons aged 65-69,  2036: 2,465 Forecast persons aged 60-64,  2036: 3,147 Forecast persons aged 55-59,  2036: 3,659 Forecast persons aged 50-54,  2036: 4,072 Forecast persons aged 45-49,  2036: 4,443 Forecast persons aged 40-44,  2036: 4,589 Forecast persons aged 35-39,  2036: 4,978 Forecast persons aged 30-34,  2036: 5,465 Forecast persons aged 25-29,  2036: 5,719 Forecast persons aged 20-24,  2036: 5,430 Forecast persons aged 15-19,  2036: 4,882 Forecast persons aged 10-14,  2036: 4,878 Forecast persons aged 5-9,  2036: 4,872 Forecast persons aged 0-4,  2036: 5,053 Forecast persons aged 85+,  2026: 384 Forecast persons aged 80-84,  2026: 434 Forecast persons aged 75-79,  2026: 746 Forecast persons aged 70-74,  2026: 1,123 Forecast persons aged 65-69,  2026: 1,520 Forecast persons aged 60-64,  2026: 2,081 Forecast persons aged 55-59,  2026: 2,459 Forecast persons aged 50-54,  2026: 2,723 Forecast persons aged 45-49,  2026: 3,092 Forecast persons aged 40-44,  2026: 3,301 Forecast persons aged 35-39,  2026: 3,470 Forecast persons aged 30-34,  2026: 3,742 Forecast persons aged 25-29,  2026: 3,909 Forecast persons aged 20-24,  2026: 3,693 Forecast persons aged 15-19,  2026: 3,443 Forecast persons aged 10-14,  2026: 3,553 Forecast persons aged 5-9,  2026: 3,568 Forecast persons aged 0-4,  2026: 3,525 Forecast persons aged 85+,  2011: 133 Forecast persons aged 80-84,  2011: 173 Forecast persons aged 75-79,  2011: 259 Forecast persons aged 70-74,  2011: 446 Forecast persons aged 65-69,  2011: 659 Forecast persons aged 60-64,  2011: 1,008 Forecast persons aged 55-59,  2011: 1,092 Forecast persons aged 50-54,  2011: 1,248 Forecast persons aged 45-49,  2011: 1,479 Forecast persons aged 40-44,  2011: 1,564 Forecast persons aged 35-39,  2011: 1,372 Forecast persons aged 30-34,  2011: 1,096 Forecast persons aged 25-29,  2011: 1,116 Forecast persons aged 20-24,  2011: 1,250 Forecast persons aged 15-19,  2011: 1,353 Forecast persons aged 10-14,  2011: 1,454 Forecast persons aged 5-9,  2011: 1,441 Forecast persons aged 0-4,  2011: 1,357
Population and household forecasts, 2011 to 2036, prepared by .id the population experts, March 2017.
Forecast change in age structure - 5 year age groups
Forecast change in age structure - 5 year age groups Forecast persons aged 85+,  2026 to 2036: 255 Forecast persons aged 80-84,  2026 to 2036: 295 Forecast persons aged 75-79,  2026 to 2036: 427 Forecast persons aged 70-74,  2026 to 2036: 697 Forecast persons aged 65-69,  2026 to 2036: 945 Forecast persons aged 60-64,  2026 to 2036: 1,066 Forecast persons aged 55-59,  2026 to 2036: 1,200 Forecast persons aged 50-54,  2026 to 2036: 1,349 Forecast persons aged 45-49,  2026 to 2036: 1,351 Forecast persons aged 40-44,  2026 to 2036: 1,287 Forecast persons aged 35-39,  2026 to 2036: 1,508 Forecast persons aged 30-34,  2026 to 2036: 1,724 Forecast persons aged 25-29,  2026 to 2036: 1,810 Forecast persons aged 20-24,  2026 to 2036: 1,737 Forecast persons aged 15-19,  2026 to 2036: 1,439 Forecast persons aged 10-14,  2026 to 2036: 1,325 Forecast persons aged 5-9,  2026 to 2036: 1,305 Forecast persons aged 0-4,  2026 to 2036: 1,528 Forecast persons aged 85+,  2011 to 2026: 250 Forecast persons aged 80-84,  2011 to 2026: 261 Forecast persons aged 75-79,  2011 to 2026: 487 Forecast persons aged 70-74,  2011 to 2026: 676 Forecast persons aged 65-69,  2011 to 2026: 861 Forecast persons aged 60-64,  2011 to 2026: 1,073 Forecast persons aged 55-59,  2011 to 2026: 1,367 Forecast persons aged 50-54,  2011 to 2026: 1,475 Forecast persons aged 45-49,  2011 to 2026: 1,612 Forecast persons aged 40-44,  2011 to 2026: 1,737 Forecast persons aged 35-39,  2011 to 2026: 2,098 Forecast persons aged 30-34,  2011 to 2026: 2,646 Forecast persons aged 25-29,  2011 to 2026: 2,793 Forecast persons aged 20-24,  2011 to 2026: 2,442 Forecast persons aged 15-19,  2011 to 2026: 2,090 Forecast persons aged 10-14,  2011 to 2026: 2,099 Forecast persons aged 5-9,  2011 to 2026: 2,127 Forecast persons aged 0-4,  2011 to 2026: 2,168
Population and household forecasts, 2011 to 2036, prepared by .id the population experts, March 2017.

Key findings

In 2011, the dominant age structure for persons in the Shire of Serpentine-Jarrahdale was ages 40 to 44 , which accounted for 8.5% of the total persons.

The largest increase in persons between 2011 and 2026 is forecast to be in ages 25 to 29 , which is expected to increase by 2,793 and account for 8.4% of the total persons.

The largest 5 year age group in 2026 is 25 to 29 years, with a total of 3,909 persons.

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