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 Chilcotts Grass, accounting for 11% (26 people). This share was higher than Lismore (C) (7.7%). Since 2016, the biggest change was in 60 to 64 year olds, which increased by 26 people and 11 percentage points.
Section overview
Age structure - Five year age groups
Chilcotts Grass - Total persons (Usual residence)
This table summarises five year age groups for Chilcotts Grass 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 Chilcotts Grass, with comparison markers for Lismore (C).
0 to 4
2021 count
0
% of total
0.0%
Change from 2016
0.0pp
0
0.0%
0.0pp
5 to 9
2021 count
5
% of total
2.1%
Change from 2016
+2.1pp
5
2.1%
+2.1pp
10 to 14
2021 count
25
% of total
10.5%
Change from 2016
+10.5pp
25
10.5%
+10.5pp
15 to 19
2021 count
10
% of total
4.2%
Change from 2016
+4.2pp
10
4.2%
+4.2pp
20 to 24
2021 count
7
% of total
3.0%
Change from 2016
+3.0pp
7
3.0%
+3.0pp
25 to 29
2021 count
16
% of total
6.8%
Change from 2016
+6.8pp
16
6.8%
+6.8pp
30 to 34
2021 count
3
% of total
1.3%
Change from 2016
+1.3pp
3
1.3%
+1.3pp
35 to 39
2021 count
10
% of total
4.2%
Change from 2016
+4.2pp
10
4.2%
+4.2pp
40 to 44
2021 count
3
% of total
1.3%
Change from 2016
+1.3pp
3
1.3%
+1.3pp
45 to 49
2021 count
9
% of total
3.8%
Change from 2016
+3.8pp
9
3.8%
+3.8pp
50 to 54
2021 count
24
% of total
10.1%
Change from 2016
+10.1pp
24
10.1%
+10.1pp
55 to 59
2021 count
22
% of total
9.3%
Change from 2016
+9.3pp
22
9.3%
+9.3pp
60 to 64
2021 count
26
% of total
11.0%
Change from 2016
+11.0pp
26
11.0%
+11.0pp
65 to 69
2021 count
22
% of total
9.3%
Change from 2016
+9.3pp
22
9.3%
+9.3pp
70 to 74
2021 count
15
% of total
6.3%
Change from 2016
+6.3pp
15
6.3%
+6.3pp
75 to 79
2021 count
14
% of total
5.9%
Change from 2016
+5.9pp
14
5.9%
+5.9pp
80 to 84
2021 count
4
% of total
1.7%
Change from 2016
+1.7pp
4
1.7%
+1.7pp
85 and over
2021 count
0
% of total
0.0%
Change from 2016
0.0pp
0
0.0%
0.0pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
0
0.0pp
5 to 9
+5
+2.1pp
10 to 14
+25
+10.5pp
15 to 19
+10
+4.2pp
20 to 24
+7
+3.0pp
25 to 29
+16
+6.8pp
30 to 34
+3
+1.3pp
35 to 39
+10
+4.2pp
40 to 44
+3
+1.3pp
45 to 49
+9
+3.8pp
50 to 54
+24
+10.1pp
55 to 59
+22
+9.3pp
60 to 64
+26
+11.0pp
65 to 69
+22
+9.3pp
70 to 74
+15
+6.3pp
75 to 79
+14
+5.9pp
80 to 84
+4
+1.7pp
85 and over
0
0.0pp
Data table
Five year age groups for Chilcotts Grass. 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 | 0 | 0.0% | 4.8% | 0 | 0.0% | 5.2% | 0 | 0.0pp |
| 5 to 9 | 5 | 2.1% | 5.8% | 0 | 0.0% | 6.3% | +5 | +2.1pp |
| 10 to 14 | 25 | 10.5% | 6.6% | 0 | 0.0% | 6.3% | +25 | +10.5pp |
| 15 to 19 | 10 | 4.2% | 6.0% | 0 | 0.0% | 6.5% | +10 | +4.2pp |
| 20 to 24 | 7 | 3.0% | 5.1% | 0 | 0.0% | 5.7% | +7 | +3.0pp |
| 25 to 29 | 16 | 6.8% | 5.4% | 0 | 0.0% | 5.0% | +16 | +6.8pp |
| 30 to 34 | 3 | 1.3% | 5.4% | 0 | 0.0% | 5.2% | +3 | +1.3pp |
| 35 to 39 | 10 | 4.2% | 5.7% | 0 | 0.0% | 5.7% | +10 | +4.2pp |
| 40 to 44 | 3 | 1.3% | 6.0% | 0 | 0.0% | 6.2% | +3 | +1.3pp |
| 45 to 49 | 9 | 3.8% | 6.6% | 0 | 0.0% | 6.7% | +9 | +3.8pp |
| 50 to 54 | 24 | 10.1% | 6.9% | 0 | 0.0% | 7.5% | +24 | +10.1pp |
| 55 to 59 | 22 | 9.3% | 7.3% | 0 | 0.0% | 8.0% | +22 | +9.3pp |
| 60 to 64 | 26 | 11.0% | 7.7% | 0 | 0.0% | 7.5% | +26 | +11.0pp |
| 65 to 69 | 22 | 9.3% | 6.9% | 0 | 0.0% | 6.1% | +22 | +9.3pp |
| 70 to 74 | 15 | 6.3% | 5.5% | 0 | 0.0% | 4.1% | +15 | +6.3pp |
| 75 to 79 | 14 | 5.9% | 3.5% | 0 | 0.0% | 3.1% | +14 | +5.9pp |
| 80 to 84 | 4 | 1.7% | 2.4% | 0 | 0.0% | 2.1% | +4 | +1.7pp |
| 85 and over | 0 | 0.0% | 2.4% | 0 | 0.0% | 2.7% | 0 | 0.0pp |
| Total | 237 | 100.0% | 100.0% | 3 | 100.0% | 100.0% | +234 | 0.0pp |