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, 60 to 64 year olds was the largest age group among residents in Koonorigan, accounting for 13% (43 people). This share was higher than Lismore (C) (7.7%). Since 2016, the biggest change was in 40 to 44 year olds, which increased by 22 people and 6.2 percentage points.
Section overview
Age structure - Five year age groups
Koonorigan - Total persons (Usual residence)
This table summarises five year age groups for Koonorigan in 2021 for persons, with comparison against Lismore (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Koonorigan, with comparison markers for Lismore (C).
0 to 4
2021 count
14
% of total
4.2%
Change from 2016
-2.7pp
14
4.2%
-2.7pp
5 to 9
2021 count
9
% of total
2.7%
Change from 2016
-1.6pp
9
2.7%
-1.6pp
10 to 14
2021 count
28
% of total
8.4%
Change from 2016
+3.1pp
28
8.4%
+3.1pp
15 to 19
2021 count
21
% of total
6.3%
Change from 2016
+0.7pp
21
6.3%
+0.7pp
20 to 24
2021 count
5
% of total
1.5%
Change from 2016
-1.1pp
5
1.5%
-1.1pp
25 to 29
2021 count
14
% of total
4.2%
Change from 2016
+2.5pp
14
4.2%
+2.5pp
30 to 34
2021 count
6
% of total
1.8%
Change from 2016
-1.2pp
6
1.8%
-1.2pp
35 to 39
2021 count
15
% of total
4.5%
Change from 2016
-0.5pp
15
4.5%
-0.5pp
40 to 44
2021 count
35
% of total
10.5%
Change from 2016
+6.2pp
35
10.5%
+6.2pp
45 to 49
2021 count
20
% of total
6.0%
Change from 2016
-1.9pp
20
6.0%
-1.9pp
50 to 54
2021 count
34
% of total
10.2%
Change from 2016
+3.3pp
34
10.2%
+3.3pp
55 to 59
2021 count
22
% of total
6.6%
Change from 2016
-5.6pp
22
6.6%
-5.6pp
60 to 64
2021 count
43
% of total
13.0%
Change from 2016
+3.4pp
43
13.0%
+3.4pp
65 to 69
2021 count
28
% of total
8.4%
Change from 2016
-0.2pp
28
8.4%
-0.2pp
70 to 74
2021 count
18
% of total
5.4%
Change from 2016
+3.1pp
18
5.4%
+3.1pp
75 to 79
2021 count
7
% of total
2.1%
Change from 2016
-0.5pp
7
2.1%
-0.5pp
80 to 84
2021 count
7
% of total
2.1%
Change from 2016
-0.9pp
7
2.1%
-0.9pp
85 and over
2021 count
3
% of total
0.9%
Change from 2016
-0.4pp
3
0.9%
-0.4pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-7
-2.7pp
5 to 9
-4
-1.6pp
10 to 14
+12
+3.1pp
15 to 19
+4
+0.7pp
20 to 24
-3
-1.1pp
25 to 29
+9
+2.5pp
30 to 34
-3
-1.2pp
35 to 39
0
-0.5pp
40 to 44
+22
+6.2pp
45 to 49
-4
-1.9pp
50 to 54
+13
+3.3pp
55 to 59
-15
-5.6pp
60 to 64
+14
+3.4pp
65 to 69
+2
-0.2pp
70 to 74
+11
+3.1pp
75 to 79
-1
-0.5pp
80 to 84
-2
-0.9pp
85 and over
-1
-0.4pp
Data table
Five year age groups for Koonorigan. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Lismore (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Lismore (C)% | Count | % | Lismore (C)% | Count | pp | |
| 0 to 4 | 14 | 4.2% | 4.8% | 21 | 6.9% | 5.2% | -7 | -2.7pp |
| 5 to 9 | 9 | 2.7% | 5.8% | 13 | 4.3% | 6.3% | -4 | -1.6pp |
| 10 to 14 | 28 | 8.4% | 6.6% | 16 | 5.3% | 6.3% | +12 | +3.1pp |
| 15 to 19 | 21 | 6.3% | 6.0% | 17 | 5.6% | 6.5% | +4 | +0.7pp |
| 20 to 24 | 5 | 1.5% | 5.1% | 8 | 2.6% | 5.7% | -3 | -1.1pp |
| 25 to 29 | 14 | 4.2% | 5.4% | 5 | 1.7% | 5.0% | +9 | +2.5pp |
| 30 to 34 | 6 | 1.8% | 5.4% | 9 | 3.0% | 5.2% | -3 | -1.2pp |
| 35 to 39 | 15 | 4.5% | 5.7% | 15 | 5.0% | 5.7% | 0 | -0.5pp |
| 40 to 44 | 35 | 10.5% | 6.0% | 13 | 4.3% | 6.2% | +22 | +6.2pp |
| 45 to 49 | 20 | 6.0% | 6.6% | 24 | 7.9% | 6.7% | -4 | -1.9pp |
| 50 to 54 | 34 | 10.2% | 6.9% | 21 | 6.9% | 7.5% | +13 | +3.3pp |
| 55 to 59 | 22 | 6.6% | 7.3% | 37 | 12.2% | 8.0% | -15 | -5.6pp |
| 60 to 64 | 43 | 13.0% | 7.7% | 29 | 9.6% | 7.5% | +14 | +3.4pp |
| 65 to 69 | 28 | 8.4% | 6.9% | 26 | 8.6% | 6.1% | +2 | -0.2pp |
| 70 to 74 | 18 | 5.4% | 5.5% | 7 | 2.3% | 4.1% | +11 | +3.1pp |
| 75 to 79 | 7 | 2.1% | 3.5% | 8 | 2.6% | 3.1% | -1 | -0.5pp |
| 80 to 84 | 7 | 2.1% | 2.4% | 9 | 3.0% | 2.1% | -2 | -0.9pp |
| 85 and over | 3 | 0.9% | 2.4% | 4 | 1.3% | 2.7% | -1 | -0.4pp |
| Total | 332 | 100.0% | 100.0% | 303 | 100.0% | 100.0% | +29 | 0.0pp |