idc-logo
svg rectangle color
The Hills Shire CouncilPopulation forecast

Baulkham Hills

Population and age structure

Between 2021 and 2030, the age structure forecasts for Baulkham Hills indicate a 16.7% increase in population under working age, a 29.3% decrease in population of retirement age, and a 22.7% 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 The Hills Shire 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
Baulkham Hills - Total persons202120302036Change between 2021 and 2036
Age group (years)Number%Number%Number%Number
0 to 42,4356.03,0836.83,1056.6+670
5 to 93,2638.13,5957.93,6387.7+375
10 to 142,9047.23,3617.43,4787.4+574
15 to 192,3515.83,0496.73,0986.6+747
20 to 242,0625.12,4865.52,6155.6+553
25 to 291,7654.42,1734.82,2324.7+467
30 to 342,3505.82,9276.42,9346.2+584
35 to 393,5488.84,0959.04,0768.7+527
40 to 443,4518.64,2289.34,2359.0+783
45 to 492,9417.33,8398.43,8728.2+932
50 to 542,4796.13,1006.83,4427.3+963
55 to 592,2165.52,6585.82,9166.2+700
60 to 641,9544.82,2555.02,4645.2+509
65 to 691,7784.42,0584.52,1554.6+377
70 to 741,9104.71,5873.51,7223.7-188
75 to 791,3163.34721.05021.1-814
80 to 848722.21950.42060.4-666
85 and over7521.93750.83880.8-364
Total persons40,349100.045,537100.047,078100.0+6,730
Source: Population and household forecasts, 2021 to 2036, prepared by .id (informed decisions), January 2023.

Key findings

In 2021, the dominant age structure for persons in Baulkham Hills was ages 35 to 39, which accounted for 8.8% of the total persons.

The largest increase in persons between 2021 and 2030 is forecast to be in ages 45 to 49, which is expected to increase by 899 and account for 8.4% of the total persons.

The largest 5 year age group in 2030 is 40 to 44 years, with a total of 4,228 persons.

DISCLAIMER: While all due care has been taken to ensure that the content of this website is accurate and current, there may be errors or omissions in it and no legal responsibility is accepted for the information and opinions in this website.

Please view our Privacy Policy, Terms of use and Legal notices.

ABS Data and the copyright in the ABS Data remains the property of the Australian Bureau of Statistics. The copyright in the way .id has modified, transformed or reconfigured the ABS Data as published on this website remains the property of .id. ABS Data can be accessed from the Australian Bureau of Statistics at www.abs.gov.au. ABS data can be used under license - terms published on ABS website. intermediary.management@abs.gov.au if you have any queries or wish to distribute any ABS data.