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LEARN MORE ABOUT .idIn 2021, the largest age group in Erina was 85 and over year olds. The group that changed the most since 2001 was 85 and over year olds, increasing by 330 people.
The Age Structure of Erina provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Erina'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 Erina'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 | |||||||
|---|---|---|---|---|---|---|---|
| Erina - Total females (Usual residence) | 2021 | 2001 | Change | ||||
| Five year age groups (years) | Number | % | Central Coast Council area % | Number | % | Central Coast Council area % | 2001 to 2021 |
| 0 to 4 | 86 | 3.0 | 5.3 | 97 | 4.1 | 6.5 | -11 |
| 5 to 9 | 107 | 3.7 | 5.7 | 118 | 5.0 | 7.2 | -11 |
| 10 to 14 | 100 | 3.4 | 5.9 | 127 | 5.4 | 7.0 | -27 |
| 15 to 19 | 114 | 3.9 | 5.5 | 113 | 4.9 | 6.1 | 0 |
| 20 to 24 | 89 | 3.1 | 5.1 | 75 | 3.2 | 4.8 | +13 |
| 25 to 29 | 81 | 2.8 | 5.2 | 96 | 4.1 | 5.5 | -16 |
| 30 to 34 | 99 | 3.4 | 5.7 | 107 | 4.6 | 6.4 | -9 |
| 35 to 39 | 116 | 4.0 | 6.1 | 127 | 5.5 | 7.3 | -12 |
| 40 to 44 | 126 | 4.3 | 5.9 | 131 | 5.6 | 7.5 | -6 |
| 45 to 49 | 115 | 4.0 | 6.4 | 114 | 4.9 | 6.6 | +1 |
| 50 to 54 | 108 | 3.7 | 6.4 | 124 | 5.3 | 6.0 | -17 |
| 55 to 59 | 113 | 3.9 | 6.5 | 96 | 4.1 | 5.1 | +17 |
| 60 to 64 | 160 | 5.5 | 6.7 | 154 | 6.6 | 4.7 | +5 |
| 65 to 69 | 174 | 6.0 | 6.2 | 143 | 6.1 | 4.7 | +30 |
| 70 to 74 | 270 | 9.3 | 6.0 | 184 | 7.9 | 4.9 | +86 |
| 75 to 79 | 298 | 10.2 | 4.6 | 221 | 9.4 | 4.3 | +77 |
| 80 to 84 | 282 | 9.7 | 3.2 | 166 | 7.1 | 3.2 | +115 |
| 85 and over | 470 | 16.2 | 3.7 | 140 | 6.0 | 2.3 | +330 |
| Total population | 2,908 | 100.0 | 100.0 | 2,342 | 100.0 | 100.0 | +565 |
Dominant groups
Analysis of the female five year age groups of Erina in 2021 compared to Central Coast Council area shows that there was a lower proportion of females in the younger age groups (under 15) and a higher proportion of females in the older age groups (65+).
Overall, 10.1% of the female population was aged between 0 and 15, and 51.4% were aged 65 years and over, compared with 16.9% and 23.7% respectively for Central Coast Council area.
The major differences between the female age structure of Erina and Central Coast Council area were:
- A larger percentage of females aged 85 and over (16.2% compared to 3.7%)
- A larger percentage of females aged 80 to 84 (9.7% compared to 3.2%)
- A larger percentage of females aged 75 to 79 (10.2% compared to 4.6%)
- A larger percentage of females aged 70 to 74 (9.3% compared to 6.0%)
Emerging groups
From 2001 to 2021, Erina's female population increased by 566 people (24.2%). This represents an average annual population change of 1.09% per year over the period.
The largest changes in female age structure in this area between 2001 and 2021 were in the age groups:
- 85 and over (+330 females)
- 80 to 84 (+115 females)
- 70 to 74 (+86 females)
- 75 to 79 (+77 females)
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