City of KwinanaPopulation forecast
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Casuarina

Population and age structure

Between 2016 and 2026, the age structure forecasts for Casuarina indicate a 10.4% decrease in population under working age, a 88.0% increase in population of retirement age, and a 22.2% decrease 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 City of Kwinana 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
Casuarina - Total persons201620262036Change between 2016 and 2036
Age group (years)Number%Number%Number%Number
0 to 4291.6543.596810.6+939
5 to 9402.2463.07748.5+734
10 to 14754.1291.94414.8+366
15 to 191065.8483.23934.3+287
20 to 2427014.815310.18339.1+563
25 to 2923813.018512.21,25813.8+1,020
30 to 3420511.222314.71,26413.9+1,059
35 to 391709.316110.69019.9+731
40 to 441749.51137.45896.5+415
45 to 491387.6996.54274.7+289
50 to 541417.7966.42853.1+144
55 to 59915.0905.92372.6+146
60 to 64744.1825.41812.0+107
65 to 69311.7513.41481.6+117
70 to 7490.5432.81491.6+140
75 to 79261.4211.41031.1+77
80 to 8440.290.6720.8+68
85 and over50.3171.1951.0+90
Total persons1,826100.01,519100.09,117100.0+7,291

Population and household forecasts, 2016 to 2036, prepared by .id , the population experts, December 2017.

Forecast age structure - 5 year age groups
Forecast age structure - 5 year age groups Forecast persons aged 85+,  2036: 95 Forecast persons aged 80-84,  2036: 72 Forecast persons aged 75-79,  2036: 103 Forecast persons aged 70-74,  2036: 149 Forecast persons aged 65-69,  2036: 148 Forecast persons aged 60-64,  2036: 181 Forecast persons aged 55-59,  2036: 237 Forecast persons aged 50-54,  2036: 285 Forecast persons aged 45-49,  2036: 427 Forecast persons aged 40-44,  2036: 589 Forecast persons aged 35-39,  2036: 901 Forecast persons aged 30-34,  2036: 1,264 Forecast persons aged 25-29,  2036: 1,258 Forecast persons aged 20-24,  2036: 833 Forecast persons aged 15-19,  2036: 393 Forecast persons aged 10-14,  2036: 441 Forecast persons aged 5-9,  2036: 774 Forecast persons aged 0-4,  2036: 968 Forecast persons aged 85+,  2026: 17 Forecast persons aged 80-84,  2026: 9 Forecast persons aged 75-79,  2026: 21 Forecast persons aged 70-74,  2026: 43 Forecast persons aged 65-69,  2026: 51 Forecast persons aged 60-64,  2026: 82 Forecast persons aged 55-59,  2026: 90 Forecast persons aged 50-54,  2026: 96 Forecast persons aged 45-49,  2026: 99 Forecast persons aged 40-44,  2026: 113 Forecast persons aged 35-39,  2026: 161 Forecast persons aged 30-34,  2026: 223 Forecast persons aged 25-29,  2026: 185 Forecast persons aged 20-24,  2026: 153 Forecast persons aged 15-19,  2026: 48 Forecast persons aged 10-14,  2026: 29 Forecast persons aged 5-9,  2026: 46 Forecast persons aged 0-4,  2026: 54 Forecast persons aged 85+,  2016: 5 Forecast persons aged 80-84,  2016: 4 Forecast persons aged 75-79,  2016: 26 Forecast persons aged 70-74,  2016: 9 Forecast persons aged 65-69,  2016: 31 Forecast persons aged 60-64,  2016: 74 Forecast persons aged 55-59,  2016: 91 Forecast persons aged 50-54,  2016: 141 Forecast persons aged 45-49,  2016: 138 Forecast persons aged 40-44,  2016: 174 Forecast persons aged 35-39,  2016: 170 Forecast persons aged 30-34,  2016: 205 Forecast persons aged 25-29,  2016: 238 Forecast persons aged 20-24,  2016: 270 Forecast persons aged 15-19,  2016: 106 Forecast persons aged 10-14,  2016: 75 Forecast persons aged 5-9,  2016: 40 Forecast persons aged 0-4,  2016: 29
Population and household forecasts, 2016 to 2036, prepared by .id the population experts, December 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: 78 Forecast persons aged 80-84,  2026 to 2036: 63 Forecast persons aged 75-79,  2026 to 2036: 82 Forecast persons aged 70-74,  2026 to 2036: 106 Forecast persons aged 65-69,  2026 to 2036: 97 Forecast persons aged 60-64,  2026 to 2036: 99 Forecast persons aged 55-59,  2026 to 2036: 147 Forecast persons aged 50-54,  2026 to 2036: 188 Forecast persons aged 45-49,  2026 to 2036: 328 Forecast persons aged 40-44,  2026 to 2036: 476 Forecast persons aged 35-39,  2026 to 2036: 740 Forecast persons aged 30-34,  2026 to 2036: 1,041 Forecast persons aged 25-29,  2026 to 2036: 1,073 Forecast persons aged 20-24,  2026 to 2036: 680 Forecast persons aged 15-19,  2026 to 2036: 345 Forecast persons aged 10-14,  2026 to 2036: 412 Forecast persons aged 5-9,  2026 to 2036: 728 Forecast persons aged 0-4,  2026 to 2036: 914 Forecast persons aged 85+,  2016 to 2026: 12 Forecast persons aged 80-84,  2016 to 2026: 5 Forecast persons aged 75-79,  2016 to 2026: -5 Forecast persons aged 70-74,  2016 to 2026: 34 Forecast persons aged 65-69,  2016 to 2026: 20 Forecast persons aged 60-64,  2016 to 2026: 8 Forecast persons aged 55-59,  2016 to 2026: -1 Forecast persons aged 50-54,  2016 to 2026: -45 Forecast persons aged 45-49,  2016 to 2026: -39 Forecast persons aged 40-44,  2016 to 2026: -61 Forecast persons aged 35-39,  2016 to 2026: -9 Forecast persons aged 30-34,  2016 to 2026: 18 Forecast persons aged 25-29,  2016 to 2026: -53 Forecast persons aged 20-24,  2016 to 2026: -117 Forecast persons aged 15-19,  2016 to 2026: -58 Forecast persons aged 10-14,  2016 to 2026: -46 Forecast persons aged 5-9,  2016 to 2026: 6 Forecast persons aged 0-4,  2016 to 2026: 25
Population and household forecasts, 2016 to 2036, prepared by .id the population experts, December 2017.

Key findings

In 2016, the dominant age structure for persons in Casuarina was ages 20 to 24, which accounted for 14.8% of the total persons.

The largest increase in persons between 2016 and 2026 is forecast to be in ages 70 to 74, which is expected to increase by 34 and account for 2.8% of the total persons.

The largest 5 year age group in 2026 is 30 to 34 years, with a total of 223 persons.

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