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Inner West CouncilPopulation forecast

Marrickville (Suburb)

Population and age structure

Between 2021 and 2031, the age structure forecasts for Marrickville (Suburb) indicate a 45.9% increase in population under working age, a 32.6% increase in population of retirement age, and a 40.9% 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 Inner West 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
Marrickville (Suburb) - Total persons202120312041Change between 2021 and 2041
Age group (years)Number%Number%Number%Number
0 to 41,2564.72,4876.62,6036.2+1,346
5 to 91,1374.31,6804.51,9494.6+812
10 to 141,2054.51,0832.91,6143.8+409
15 to 191,0003.71,2773.41,5813.8+581
20 to 241,6706.22,8427.62,9597.0+1,289
25 to 292,83310.64,25311.34,42610.5+1,592
30 to 343,10611.64,36711.64,53310.8+1,427
35 to 392,4679.23,80610.14,0109.5+1,543
40 to 441,9797.43,2008.53,5688.5+1,589
45 to 491,8997.12,5346.73,0947.3+1,194
50 to 541,7196.41,9455.22,5626.1+844
55 to 591,4675.51,7034.52,0584.9+591
60 to 641,2844.81,4473.91,5833.8+300
65 to 691,0543.91,1843.21,3273.1+274
70 to 748803.31,0252.71,1282.7+248
75 to 797082.69062.41,0042.4+297
80 to 845492.18172.29412.2+392
85 and over5402.01,0152.71,1972.8+657
Total persons26,754100.037,570100.042,138100.0+15,384
Source: Population and household forecasts, 2021 to 2041, prepared by .id (informed decisions), July 2023.

Key findings

In 2021, the dominant age structure for persons in Marrickville (Suburb) was ages 30 to 34, which accounted for 11.6% 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 1,420 and account for 11.3% of the total persons.

The largest 5 year age group in 2031 is 30 to 34 years, with a total of 4,367 persons.

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