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City of KnoxPopulation forecast

City of Knox

Population and age structure

Between 2021 and 2031, the age structure forecasts for City of Knox indicate a 4.3% decrease in females under working age, a 16.8% increase in females of retirement age, and a 5.7% increase in females 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 Knox 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
City of Knox - Total females202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 44,2945.34,0844.74,4874.6+193
5 to 94,6675.74,2224.94,7384.9+71
10 to 144,4185.44,5035.24,9665.1+548
15 to 194,5295.64,7985.55,1455.3+615
20 to 244,7145.84,9695.75,4305.6+716
25 to 294,7935.95,2426.15,7796.0+986
30 to 345,5876.85,9696.96,6106.8+1,023
35 to 395,9197.36,3537.37,1767.4+1,257
40 to 445,5496.86,3447.37,2307.5+1,681
45 to 495,5196.86,1377.17,0377.3+1,518
50 to 545,6436.95,6196.56,5576.8+914
55 to 595,5126.85,3326.26,1276.3+615
60 to 645,1556.35,1526.05,6475.8+492
65 to 694,5185.54,7475.55,0155.2+497
70 to 743,8364.74,2144.94,4244.6+588
75 to 792,7423.43,5334.13,8904.0+1,149
80 to 842,0122.52,8123.23,2573.4+1,245
85 and over2,1602.62,5322.93,0853.2+925
Total persons81,568100.086,563100.096,601100.0+15,034
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), June 2023.

Key findings

In 2021, the dominant age structure for females in City of Knox was ages 35 to 39, which accounted for 7.3% of the total females.

The largest increase in females between 2021 and 2031 is forecast to be in ages 80 to 84, which is expected to increase by 801 and account for 3.2% of the total females.

The largest female 5 year age group in 2031 is 35 to 39 years, with a total of 6,353 females.

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