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Mornington Peninsula ShireCommunity profile

Mount Martha

Five year age groups

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In 2021, the largest age group in Mount Martha was 10 to 14 year olds. The group that changed the most since 2006 was 70 to 74 year olds, increasing by 721 people.

The Age Structure of Mount Martha provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Mount Martha'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 Mount Martha'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
Mount Martha - Total persons (Enumerated)20212006Change
Five year age groups (years)Number%Mornington Peninsula Shire %Number%Mornington Peninsula Shire %2006 to 2021
0 to 49084.74.71,0277.35.9-119
5 to 91,3176.85.61,0957.86.5+222
10 to 141,5818.16.21,1157.97.0+466
15 to 191,4007.25.89426.77.0+458
20 to 248504.44.75874.24.8+262
25 to 295162.74.15263.74.2-11
30 to 346353.34.78406.05.5-206
35 to 399835.15.21,1588.26.7-176
40 to 441,2556.55.51,0797.77.1+175
45 to 491,5337.96.51,0387.47.2+494
50 to 541,5718.17.09066.46.6+664
55 to 591,2306.36.78816.26.7+348
60 to 641,1906.16.97835.56.0+407
65 to 691,0915.66.85894.25.0+501
70 to 741,2076.26.94863.44.3+721
75 to 799574.95.53902.84.0+566
80 to 846373.33.63262.33.0+311
85 and over5943.13.63362.42.4+258
Total population19,455100.0100.014,113100.0100.0+5,341
Source: Australian Bureau of Statistics, Census of Population and Housing 2006 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 Mount Martha in 2021 compared to Mornington Peninsula Shire 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, 19.6% of the population was aged between 0 and 15, and 23.1% were aged 65 years and over, compared with 16.6% and 26.3% respectively for Mornington Peninsula Shire.

The major differences between the age structure of Mount Martha and Mornington Peninsula Shire were:

  • A larger percentage of persons aged 10 to 14 (8.1% compared to 6.2%)
  • A larger percentage of persons aged 15 to 19 (7.2% compared to 5.8%)
  • A smaller percentage of persons aged 30 to 34 (3.3% compared to 4.7%)
  • A smaller percentage of persons aged 25 to 29 (2.7% compared to 4.1%)

Emerging groups

From 2006 to 2021, Mount Martha's population increased by 5,342 people (37.9%). This represents an average annual population change of 2.16% per year over the period.

The largest changes in age structure in this area between 2006 and 2021 were in the age groups:

  • 70 to 74 (+721 persons)
  • 50 to 54 (+664 persons)
  • 75 to 79 (+566 persons)
  • 65 to 69 (+501 persons)

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