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Wollongong City CouncilPopulation forecast

Marshall Mount - Haywards Bay - Yallah

Population and age structure

Between 2021 and 2031, the age structure forecasts for Marshall Mount - Haywards Bay - Yallah indicate a 39.4% increase in population under working age, a 43.4% increase in population of retirement age, and a 28.7% 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 Wollongong City Council 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
Marshall Mount - Haywards Bay - Yallah - Total persons202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 41036.51748.37488.4+645
5 to 91308.21798.58039.0+673
10 to 141127.11286.16407.2+528
15 to 191338.41286.15686.3+435
20 to 24966.01577.55676.3+472
25 to 29251.61657.86046.8+579
30 to 34986.21507.16587.4+560
35 to 391318.31627.77698.6+638
40 to 441227.71426.76997.8+578
45 to 491066.71085.15666.3+461
50 to 541016.41014.84925.5+391
55 to 59956.01055.04324.8+337
60 to 641127.1934.43764.2+264
65 to 69986.2844.03003.4+202
70 to 74613.8733.52653.0+204
75 to 79533.3592.81942.2+141
80 to 8470.4532.51401.6+133
85 and over20.1482.31201.3+118
Total persons1,583100.02,107100.08,940100.0+7,356
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), April 2024.

Key findings

In 2021, the dominant age structure for persons in Marshall Mount - Haywards Bay - Yallah was ages 15 to 19, which accounted for 8.4% of the total persons.

The largest increase in persons between 2021 and 2031 is forecast to be in ages 25 to 29, which is expected to increase by 140 and account for 7.8% of the total persons.

The largest 5 year age group in 2031 is 5 to 9 years, with a total of 179 persons.

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