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There were 422 people over the age of 85 living in Boronia in 2011, with largest age group being 25 to 29 year olds.

The Age Structure of Boronia provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Boronia'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 Boronia's Age Structure should be viewed in conjunction with Household Types and Dwelling Types.

Derived from the Census question:

'What is the person's date of birth (or age last birthday)?'

Total population

Age structure - Five year age groups
Boronia - Total persons (Usual residence)20112006Change
Five year age groups (years)Number%City of Knox %Number%City of Knox %2006 to 2011
0 to 41,2756.16.01,1525.76.1+124
5 to 91,0995.36.01,2876.36.8-188
10 to 141,1035.36.51,2606.27.5-158
15 to 191,1685.67.31,3046.47.8-136
20 to 241,3976.76.91,3686.76.9+30
25 to 291,5817.66.21,4217.06.0+161
30 to 341,5797.66.31,4807.36.7+100
35 to 391,4887.16.91,4557.27.6+33
40 to 441,4096.77.51,3746.87.8+35
45 to 491,4226.87.61,4307.07.9-7
50 to 541,3536.57.51,4297.07.3-76
55 to 591,3746.66.71,3596.76.5+15
60 to 641,3176.35.91,1165.54.6+202
65 to 699784.74.18544.23.3+124
70 to 748514.13.07023.52.4+149
75 to 795862.82.25642.82.0+22
80 to 844822.31.74182.11.6+63
85 and over4222.01.73591.81.4+63

Source: Australian Bureau of Statistics, Census of Population and Housing 2006 and 2011. Compiled and presented by .id , the population experts.

Age structure - five year age groups, 2011
Age structure - five year age groups, 2011 85 and over, City of Knox: 1.7% 80 to 84, City of Knox: 1.7% 75 to 79, City of Knox: 2.2% 70 to 74, City of Knox: 3.0% 65 to 69, City of Knox: 4.1% 60 to 64, City of Knox: 5.9% 55 to 59, City of Knox: 6.7% 50 to 54, City of Knox: 7.5% 45 to 49, City of Knox: 7.6% 40 to 44, City of Knox: 7.5% 35 to 39, City of Knox: 6.9% 30 to 34, City of Knox: 6.3% 25 to 29, City of Knox: 6.2% 20 to 24, City of Knox: 6.9% 15 to 19, City of Knox: 7.3% 10 to 14, City of Knox: 6.5% 5 to 9, City of Knox: 6.0% 0 to 4, City of Knox: 6.0% 85 and over, Boronia: 2.0% 80 to 84, Boronia: 2.3% 75 to 79, Boronia: 2.8% 70 to 74, Boronia: 4.1% 65 to 69, Boronia: 4.7% 60 to 64, Boronia: 6.3% 55 to 59, Boronia: 6.6% 50 to 54, Boronia: 6.5% 45 to 49, Boronia: 6.8% 40 to 44, Boronia: 6.7% 35 to 39, Boronia: 7.1% 30 to 34, Boronia: 7.6% 25 to 29, Boronia: 7.6% 20 to 24, Boronia: 6.7% 15 to 19, Boronia: 5.6% 10 to 14, Boronia: 5.3% 5 to 9, Boronia: 5.3% 0 to 4, Boronia: 6.1%
Source: Australian Bureau of Statistics, Census of Population and Housing, 2011 (Usual residence data)
Compiled and presented in profile.id by .id, the population experts.
Change in age structure - five year age groups, 2006 to 2011
Change in age structure - five year age groups, 2006 to 2011 85 and over, Boronia: +63 80 to 84, Boronia: +63 75 to 79, Boronia: +22 70 to 74, Boronia: +149 65 to 69, Boronia: +124 60 to 64, Boronia: +202 55 to 59, Boronia: +15 50 to 54, Boronia: -76 45 to 49, Boronia: -7 40 to 44, Boronia: +35 35 to 39, Boronia: +33 30 to 34, Boronia: +100 25 to 29, Boronia: +161 20 to 24, Boronia: +30 15 to 19, Boronia: -136 10 to 14, Boronia: -158 5 to 9, Boronia: -188 0 to 4, Boronia: +124
Source: Australian Bureau of Statistics, Census of Population and Housing, 2006 and 2011 (Usual residence data)
Compiled and presented in profile.id by .id, the population experts.

Dominant groups

Analysis of the five year age groups of Boronia in 2011 compared to the City of Knox shows that there was a lower proportion of people in the younger age groups (under 15) and a higher proportion of people in the older age groups (65+).

Overall, 16.6% of the population was aged between 0 and 15, and 15.9% were aged 65 years and over, compared with 18.5% and 12.7% respectively for the City of Knox.

The major differences between the age structure of Boronia and the City of Knox were:

  • A larger percentage of persons aged 25 to 29 (7.6% compared to 6.2%)
  • A larger percentage of persons aged 30 to 34 (7.6% compared to 6.3%)
  • A smaller percentage of persons aged 15 to 19 (5.6% compared to 7.3%)
  • A smaller percentage of persons aged 10 to 14 (5.3% compared to 6.5%)

Emerging groups

From 2006 to 2011, Boronia's population increased by 557 people (2.7%). This represents an average annual population change of 0.54% per year over the period.

The largest changes in age structure in this area between 2006 and 2011 were in the age groups:

  • 60 to 64 (+202 persons)
  • 5 to 9 (-188 persons)
  • 25 to 29 (+161 persons)
  • 10 to 14 (-158 persons)