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Western Sydney (LGA)Community profile

Blacktown City

Five year age groups

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In 2021, the largest age group in Blacktown City was 35 to 39 year olds. The group that changed the most since 2016 was 35 to 39 year olds, increasing by 9,286 people.

The Age Structure of Blacktown City provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Blacktown City's residential role and function and how it is likely to change in the future.

Five year age groups present a classic age profile of the population. Each age group covers exactly five years, which enables direct comparison between each group.

To get a more complete picture Blacktown City's Age Structure should be viewed in conjunction with Household Types and Dwelling Types.

Q:

Derived from the Census question:

'What is the person's date of birth or age?'

Age structure - Five year age groups
Blacktown City - Total persons (Usual residence)20212016Change
Five year age groups (years)Number%Western Sydney (LGA) %Number%Western Sydney (LGA) %2016 to 2021
0 to 429,9077.56.826,9288.07.2+2,979
5 to 931,3887.97.126,6147.97.2+4,774
10 to 1428,8297.36.823,1246.96.5+5,705
15 to 1924,3756.16.123,2896.96.6+1,086
20 to 2426,4276.76.722,8306.86.9+3,597
25 to 2927,8127.07.224,1787.27.4+3,634
30 to 3431,4537.97.728,0668.37.9+3,387
35 to 3936,4369.28.027,1508.17.3+9,286
40 to 4430,9477.87.024,2547.26.9+6,693
45 to 4925,4026.46.421,7916.56.5+3,611
50 to 5422,1655.65.920,2746.06.3+1,891
55 to 5920,1585.15.618,1935.45.9+1,965
60 to 6417,7144.55.215,5074.65.0+2,207
65 to 6914,7863.74.312,9643.84.2+1,822
70 to 7412,2403.13.68,5722.53.0+3,668
75 to 797,6221.92.45,8121.72.1+1,810
80 to 844,8151.21.63,8681.11.5+947
85 and over4,3041.11.53,5531.11.5+751
Total population396,780100.0100.0336,967100.0100.0+59,813
Source: Australian Bureau of Statistics, Census of Population and Housing 2016 and 2021. Compiled and presented by .id (informed decisions).
Please refer to specific data notes for more information

Dominant groups

Analysis of the five year age groups of Blacktown City in 2021 compared to Western Sydney (LGA) shows that there was a higher proportion of people in the younger age groups (under 15) and a lower proportion of people in the older age groups (65+).

Overall, 22.7% of the population was aged between 0 and 15, and 11.0% were aged 65 years and over, compared with 20.7% and 13.5% respectively for Western Sydney (LGA).

The major differences between the age structure of Blacktown City and Western Sydney (LGA) were:

  • A larger percentage of persons aged 35 to 39 (9.2% compared to 8.0%)
  • A larger percentage of persons aged 40 to 44 (7.8% compared to 7.0%)
  • A larger percentage of persons aged 5 to 9 (7.9% compared to 7.1%)
  • A larger percentage of persons aged 0 to 4 (7.5% compared to 6.8%)

Emerging groups

From 2016 to 2021, Blacktown City's population increased by 59,813 people (17.8%). This represents an average annual population change of 3.32% per year over the period.

The largest changes in age structure in this area between 2016 and 2021 were in the age groups:

  • 35 to 39 (+9,286 persons)
  • 40 to 44 (+6,693 persons)
  • 10 to 14 (+5,705 persons)
  • 5 to 9 (+4,774 persons)

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