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Colac Otway ShireCommunity profile

Colac Otway Shire

Five year age groups

In 2021, the largest age group in Colac Otway Shire was 60 to 64 year olds. The group that changed the most since 2016 was 70 to 74 year olds, increasing by 323 people.

The Age Structure of Colac Otway Shire provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Colac Otway Shire'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 Colac Otway Shire'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
Colac Otway Shire - Total persons (Usual residence)20212016Change
Five year age groups (years)Number%Rural South %Number%Rural South %2016 to 2021
0 to 41,1235.04.41,1665.64.6-43
5 to 91,2865.76.31,2676.06.0+19
10 to 141,3275.96.71,2626.07.6+65
15 to 191,2145.46.01,1915.76.2+23
20 to 241,0254.64.11,0815.23.0-56
25 to 291,2775.73.91,1055.33.6+172
30 to 341,2945.84.91,0955.24.7+199
35 to 391,2665.65.51,0555.04.7+211
40 to 441,1995.36.01,2155.86.7-16
45 to 491,3255.97.21,3866.67.6-61
50 to 541,4906.67.21,4376.98.8+53
55 to 591,5747.09.21,5567.49.0+18
60 to 641,6467.38.01,5937.69.4+53
65 to 691,6397.38.11,4647.07.7+175
70 to 741,4286.46.21,1055.35.1+323
75 to 799754.33.98324.02.5+143
80 to 846803.01.35662.71.7+114
85 and over6512.90.95852.81.2+66
Total population22,419100.0100.020,961100.0100.0+1,458
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 Colac Otway Shire in 2021 compared to Rural South 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, 16.7% of the population was aged between 0 and 15, and 24.0% were aged 65 years and over, compared with 17.5% and 20.3% respectively for Rural South.

The major differences between the age structure of Colac Otway Shire and Rural South were:

  • A larger percentage of persons aged 85 and over (2.9% compared to 0.9%)
  • A larger percentage of persons aged 25 to 29 (5.7% compared to 3.9%)
  • A larger percentage of persons aged 80 to 84 (3.0% compared to 1.3%)
  • A smaller percentage of persons aged 55 to 59 (7.0% compared to 9.2%)

Emerging groups

From 2016 to 2021, Colac Otway Shire's population increased by 1,458 people (7.0%). This represents an average annual population change of 1.35% per year over the period.

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

  • 70 to 74 (+323 persons)
  • 35 to 39 (+211 persons)
  • 30 to 34 (+199 persons)
  • 65 to 69 (+175 persons)

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