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City of MonashPopulation forecast

Oakleigh

Population and age structure

Between 2021 and 2031, the age structure forecasts for Oakleigh indicate a 40.9% increase in population under working age, a 33.0% increase in population of retirement age, and a 44.9% 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 City of Monash 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
Oakleigh - Total persons202120312041Change between 2021 and 2041
Age group (years)Number%Number%Number%Number
0 to 44024.77265.98915.8+489
5 to 94144.85774.77234.7+309
10 to 144204.94393.65783.8+158
15 to 194154.86205.17635.0+348
20 to 247428.71,0538.61,2818.4+539
25 to 297498.71,21610.01,5149.9+765
30 to 347328.51,23010.11,51910.0+787
35 to 396387.41,0268.41,2668.3+628
40 to 445266.18166.71,0336.8+507
45 to 495716.76895.68985.9+327
50 to 546417.56625.48625.7+221
55 to 595296.26995.78125.3+283
60 to 644755.57125.87795.1+304
65 to 693233.85544.56904.5+367
70 to 743313.94403.66013.9+270
75 to 792222.63002.54523.0+230
80 to 841712.02301.93022.0+131
85 and over2673.12241.82691.8+2
Total persons8,568100.012,216100.015,234100.0+6,666
Source: Population and household forecasts, 2021 to 2041, prepared by .id (informed decisions), November 2022.

Key findings

In 2021, the dominant age structure for persons in Oakleigh was ages 25 to 29, which accounted for 8.7% of the total persons.

The largest increase in persons between 2021 and 2031 is forecast to be in ages 30 to 34, which is expected to increase by 498 and account for 10.1% of the total persons.

The largest 5 year age group in 2031 is 30 to 34 years, with a total of 1,230 persons.

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