Population
Five year age groups
About this topic
Five year age groups show the population in standard five-year cohorts from early childhood through older age. Because each band covers the same span of years, the topic gives a clear and comparable view of an area's age structure.
This topic is useful for identifying growth or decline in specific cohorts and for comparing age patterns across places and over time. For service planning, it is often read together with service age groups, household types, and dwelling types.
Interpretation notes
- Age is reported as at Census night, so the counts are a snapshot of the resident age structure at that point in time.
- Because each band covers the same five-year span, this topic is best for exact cohort comparison rather than service-planning life stages.
Related topics
Key insight
In 2021, 70 to 74 year olds was the largest age group among residents in Forster (NSW), accounting for 9.8% (1,394 people). This share was higher than Mid-Coast (A) (9.2%). Since 2016, the biggest change was in 75 to 79 year olds, which increased by 242 people and 1.5 percentage points.
Section overview
Age structure - Five year age groups
Forster (NSW) - Total persons (Usual residence)
This table summarises five year age groups for Forster (NSW) in 2021 for persons, with comparison against Mid-Coast (A) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Forster (NSW), with comparison markers for Mid-Coast (A).
0 to 4
2021 count
505
% of total
3.6%
Change from 2016
-0.6pp
505
3.6%
-0.6pp
5 to 9
2021 count
622
% of total
4.4%
Change from 2016
-0.6pp
622
4.4%
-0.6pp
10 to 14
2021 count
735
% of total
5.2%
Change from 2016
+0.2pp
735
5.2%
+0.2pp
15 to 19
2021 count
645
% of total
4.5%
Change from 2016
-0.5pp
645
4.5%
-0.5pp
20 to 24
2021 count
448
% of total
3.2%
Change from 2016
-0.3pp
448
3.2%
-0.3pp
25 to 29
2021 count
498
% of total
3.5%
Change from 2016
-0.1pp
498
3.5%
-0.1pp
30 to 34
2021 count
529
% of total
3.7%
Change from 2016
-0.1pp
529
3.7%
-0.1pp
35 to 39
2021 count
648
% of total
4.6%
Change from 2016
+0.5pp
648
4.6%
+0.5pp
40 to 44
2021 count
599
% of total
4.2%
Change from 2016
-0.7pp
599
4.2%
-0.7pp
45 to 49
2021 count
737
% of total
5.2%
Change from 2016
0.0pp
737
5.2%
0.0pp
50 to 54
2021 count
765
% of total
5.4%
Change from 2016
-0.5pp
765
5.4%
-0.5pp
55 to 59
2021 count
871
% of total
6.1%
Change from 2016
-0.5pp
871
6.1%
-0.5pp
60 to 64
2021 count
1,155
% of total
8.1%
Change from 2016
+0.2pp
1,155
8.1%
+0.2pp
65 to 69
2021 count
1,310
% of total
9.2%
Change from 2016
-0.2pp
1,310
9.2%
-0.2pp
70 to 74
2021 count
1,394
% of total
9.8%
Change from 2016
+1.0pp
1,394
9.8%
+1.0pp
75 to 79
2021 count
1,145
% of total
8.1%
Change from 2016
+1.5pp
1,145
8.1%
+1.5pp
80 to 84
2021 count
754
% of total
5.3%
Change from 2016
+0.4pp
754
5.3%
+0.4pp
85 and over
2021 count
839
% of total
5.9%
Change from 2016
+0.2pp
839
5.9%
+0.2pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-71
-0.6pp
5 to 9
-62
-0.6pp
10 to 14
+44
+0.2pp
15 to 19
-48
-0.5pp
20 to 24
-33
-0.3pp
25 to 29
-3
-0.1pp
30 to 34
+3
-0.1pp
35 to 39
+87
+0.5pp
40 to 44
-71
-0.7pp
45 to 49
+27
0.0pp
50 to 54
-45
-0.5pp
55 to 59
-40
-0.5pp
60 to 64
+68
+0.2pp
65 to 69
+24
-0.2pp
70 to 74
+183
+1.0pp
75 to 79
+242
+1.5pp
80 to 84
+74
+0.4pp
85 and over
+62
+0.2pp
Data table
Five year age groups for Forster (NSW). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Mid-Coast (A).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Mid-Coast (A)% | Count | % | Mid-Coast (A)% | Count | pp | |
| 0 to 4 | 505 | 3.6% | 4.1% | 576 | 4.2% | 4.6% | -71 | -0.6pp |
| 5 to 9 | 622 | 4.4% | 4.9% | 684 | 5.0% | 5.4% | -62 | -0.6pp |
| 10 to 14 | 735 | 5.2% | 5.6% | 691 | 5.0% | 5.4% | +44 | +0.2pp |
| 15 to 19 | 645 | 4.5% | 4.8% | 693 | 5.0% | 5.3% | -48 | -0.5pp |
| 20 to 24 | 448 | 3.2% | 3.6% | 481 | 3.5% | 3.8% | -33 | -0.3pp |
| 25 to 29 | 498 | 3.5% | 3.8% | 501 | 3.6% | 3.7% | -3 | -0.1pp |
| 30 to 34 | 529 | 3.7% | 4.1% | 526 | 3.8% | 3.8% | +3 | -0.1pp |
| 35 to 39 | 648 | 4.6% | 4.3% | 561 | 4.1% | 4.1% | +87 | +0.5pp |
| 40 to 44 | 599 | 4.2% | 4.4% | 670 | 4.9% | 5.1% | -71 | -0.7pp |
| 45 to 49 | 737 | 5.2% | 5.3% | 710 | 5.2% | 5.8% | +27 | 0.0pp |
| 50 to 54 | 765 | 5.4% | 6.0% | 810 | 5.9% | 6.7% | -45 | -0.5pp |
| 55 to 59 | 871 | 6.1% | 7.2% | 911 | 6.6% | 7.8% | -40 | -0.5pp |
| 60 to 64 | 1,155 | 8.1% | 8.8% | 1,087 | 7.9% | 8.4% | +68 | +0.2pp |
| 65 to 69 | 1,310 | 9.2% | 9.1% | 1,286 | 9.4% | 9.3% | +24 | -0.2pp |
| 70 to 74 | 1,394 | 9.8% | 9.2% | 1,211 | 8.8% | 7.7% | +183 | +1.0pp |
| 75 to 79 | 1,145 | 8.1% | 6.7% | 903 | 6.6% | 5.5% | +242 | +1.5pp |
| 80 to 84 | 754 | 5.3% | 4.2% | 680 | 4.9% | 3.7% | +74 | +0.4pp |
| 85 and over | 839 | 5.9% | 4.0% | 777 | 5.7% | 3.8% | +62 | +0.2pp |
| Total | 14,187 | 100.0% | 100.0% | 13,740 | 100.0% | 100.0% | +447 | 0.0pp |