One Tree Hill
Five year age groups
In 2021, the largest age group in One Tree Hill was 55 to 59 year olds. The group that changed the most since 2006 was 40 to 44 year olds, decreasing by 69 people.
The Age Structure of One Tree Hill provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of One Tree Hill'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 One Tree Hill'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?'
Total population
| Age structure - Five year age groups | ||||||||
|---|---|---|---|---|---|---|---|---|
| One Tree Hill - Total persons (Usual residence) | 2021 | 2006 | Change | |||||
| Five year age groups (years) | Number | % | Elizabeth Park % | Number | % | Elizabeth Park % | 2006 to 2021 | |
| 0 to 4 | 46 | 4.4 | 7.6 | 60 | 5.4 | 7.1 | -15 | 2001 |
| 5 to 9 | 66 | 6.3 | 8.1 | 112 | 10.0 | 7.1 | -47 | 2002 |
| 10 to 14 | 68 | 6.5 | 7.4 | 111 | 9.9 | 8.0 | -43 | 2003 |
| 15 to 19 | 78 | 7.5 | 6.3 | 88 | 7.9 | 7.3 | -11 | 2004 |
| 20 to 24 | 75 | 7.2 | 7.2 | 49 | 4.4 | 6.9 | +25 | 2005 |
| 25 to 29 | 29 | 2.8 | 8.2 | 22 | 2.0 | 5.8 | +7 | 2006 |
| 30 to 34 | 41 | 3.9 | 7.5 | 64 | 5.8 | 5.6 | -24 | 2007 |
| 35 to 39 | 63 | 6.0 | 7.4 | 81 | 7.2 | 6.4 | -18 | 2008 |
| 40 to 44 | 51 | 4.9 | 5.0 | 119 | 10.7 | 6.9 | -69 | 2009 |
| 45 to 49 | 60 | 5.7 | 5.0 | 108 | 9.7 | 6.1 | -49 | 2010 |
| 50 to 54 | 93 | 8.9 | 5.6 | 87 | 7.8 | 5.0 | +6 | 2011 |
| 55 to 59 | 116 | 11.1 | 5.3 | 78 | 7.0 | 4.8 | +37 | 2012 |
| 60 to 64 | 88 | 8.4 | 4.8 | 62 | 5.6 | 4.7 | +25 | 2013 |
| 65 to 69 | 60 | 5.7 | 3.5 | 31 | 2.8 | 5.5 | +29 | 2014 |
| 70 to 74 | 49 | 4.7 | 3.9 | 19 | 1.7 | 4.9 | +30 | 2015 |
| 75 to 79 | 34 | 3.3 | 2.5 | 18 | 1.6 | 3.4 | +16 | 2016 |
| 80 to 84 | 18 | 1.7 | 2.6 | 3 | 0.3 | 2.7 | +15 | 2017 |
| 85 and over | 9 | 0.9 | 2.4 | 3 | 0.3 | 1.5 | +6 | 2018 |
| Total population | 1,044 | 100.0 | 100.0 | 1,124 | 100.0 | 100.0 | -80 | |
Source: Australian Bureau of Statistics, Census of Population and Housing (opens a new window) 2006 and 2021. Compiled and presented by .id (opens a new window)(informed decisions).
(Usual residence data)
Compiled and presented in profile.id by .id (informed decisions).
Compiled and presented in profile.id by .id (informed decisions).
Dominant groups
Analysis of the five year age groups of One Tree Hill in 2021 compared to Elizabeth Park 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, 17.2% of the population was aged between 0 and 15, and 16.3% were aged 65 years and over, compared with 23.0% and 14.9% respectively for Elizabeth Park.
The major differences between the age structure of One Tree Hill and Elizabeth Park were:
- A larger percentage of persons aged 55 to 59 (11.1% compared to 5.3%)
- A larger percentage of persons aged 60 to 64 (8.4% compared to 4.8%)
- A smaller percentage of persons aged 25 to 29 (2.8% compared to 8.2%)
- A smaller percentage of persons aged 30 to 34 (3.9% compared to 7.5%)
Emerging groups
From 2006 to 2021, One Tree Hill's population decreased by 80 people (7.1%). This represents an average annual population change of -0.49% per year over the period.
The largest change in age structure in this area between 2006 and 2021 was in the age group:
- 40 to 44 (-69 persons)