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 Smiths Lake, accounting for 9.3% (124 people). This share was higher than Mid-Coast (A) (8.8%). Since 2016, the biggest change was in 55 to 59 year olds, which increased by 24 people and 1.3 percentage points.
Section overview
Age structure - Five year age groups
Smiths Lake - Total persons (Usual residence)
This table summarises five year age groups for Smiths Lake 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 Smiths Lake, with comparison markers for Mid-Coast (A).
0 to 4
2021 count
69
% of total
5.2%
Change from 2016
0.0pp
69
5.2%
0.0pp
5 to 9
2021 count
85
% of total
6.4%
Change from 2016
-2.3pp
85
6.4%
-2.3pp
10 to 14
2021 count
91
% of total
6.8%
Change from 2016
+0.6pp
91
6.8%
+0.6pp
15 to 19
2021 count
56
% of total
4.2%
Change from 2016
-1.1pp
56
4.2%
-1.1pp
20 to 24
2021 count
48
% of total
3.6%
Change from 2016
+0.4pp
48
3.6%
+0.4pp
25 to 29
2021 count
49
% of total
3.7%
Change from 2016
+1.3pp
49
3.7%
+1.3pp
30 to 34
2021 count
61
% of total
4.6%
Change from 2016
+0.8pp
61
4.6%
+0.8pp
35 to 39
2021 count
63
% of total
4.7%
Change from 2016
-1.0pp
63
4.7%
-1.0pp
40 to 44
2021 count
80
% of total
6.0%
Change from 2016
-0.4pp
80
6.0%
-0.4pp
45 to 49
2021 count
85
% of total
6.4%
Change from 2016
-0.2pp
85
6.4%
-0.2pp
50 to 54
2021 count
93
% of total
7.0%
Change from 2016
+0.7pp
93
7.0%
+0.7pp
55 to 59
2021 count
114
% of total
8.6%
Change from 2016
+1.3pp
114
8.6%
+1.3pp
60 to 64
2021 count
124
% of total
9.3%
Change from 2016
+0.8pp
124
9.3%
+0.8pp
65 to 69
2021 count
114
% of total
8.6%
Change from 2016
+0.4pp
114
8.6%
+0.4pp
70 to 74
2021 count
102
% of total
7.7%
Change from 2016
+0.7pp
102
7.7%
+0.7pp
75 to 79
2021 count
58
% of total
4.4%
Change from 2016
+0.5pp
58
4.4%
+0.5pp
80 to 84
2021 count
40
% of total
3.0%
Change from 2016
+1.2pp
40
3.0%
+1.2pp
85 and over
2021 count
17
% of total
1.3%
Change from 2016
0.0pp
17
1.3%
0.0pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+5
0.0pp
5 to 9
-23
-2.3pp
10 to 14
+14
+0.6pp
15 to 19
-9
-1.1pp
20 to 24
+9
+0.4pp
25 to 29
+19
+1.3pp
30 to 34
+14
+0.8pp
35 to 39
-8
-1.0pp
40 to 44
+1
-0.4pp
45 to 49
+4
-0.2pp
50 to 54
+15
+0.7pp
55 to 59
+24
+1.3pp
60 to 64
+19
+0.8pp
65 to 69
+13
+0.4pp
70 to 74
+16
+0.7pp
75 to 79
+10
+0.5pp
80 to 84
+18
+1.2pp
85 and over
+1
0.0pp
Data table
Five year age groups for Smiths Lake. 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 | 69 | 5.2% | 4.1% | 64 | 5.2% | 4.6% | +5 | 0.0pp |
| 5 to 9 | 85 | 6.4% | 4.9% | 108 | 8.7% | 5.4% | -23 | -2.3pp |
| 10 to 14 | 91 | 6.8% | 5.6% | 77 | 6.2% | 5.4% | +14 | +0.6pp |
| 15 to 19 | 56 | 4.2% | 4.8% | 65 | 5.3% | 5.3% | -9 | -1.1pp |
| 20 to 24 | 48 | 3.6% | 3.6% | 39 | 3.2% | 3.8% | +9 | +0.4pp |
| 25 to 29 | 49 | 3.7% | 3.8% | 30 | 2.4% | 3.7% | +19 | +1.3pp |
| 30 to 34 | 61 | 4.6% | 4.1% | 47 | 3.8% | 3.8% | +14 | +0.8pp |
| 35 to 39 | 63 | 4.7% | 4.3% | 71 | 5.7% | 4.1% | -8 | -1.0pp |
| 40 to 44 | 80 | 6.0% | 4.4% | 79 | 6.4% | 5.1% | +1 | -0.4pp |
| 45 to 49 | 85 | 6.4% | 5.3% | 81 | 6.6% | 5.8% | +4 | -0.2pp |
| 50 to 54 | 93 | 7.0% | 6.0% | 78 | 6.3% | 6.7% | +15 | +0.7pp |
| 55 to 59 | 114 | 8.6% | 7.2% | 90 | 7.3% | 7.8% | +24 | +1.3pp |
| 60 to 64 | 124 | 9.3% | 8.8% | 105 | 8.5% | 8.4% | +19 | +0.8pp |
| 65 to 69 | 114 | 8.6% | 9.1% | 101 | 8.2% | 9.3% | +13 | +0.4pp |
| 70 to 74 | 102 | 7.7% | 9.2% | 86 | 7.0% | 7.7% | +16 | +0.7pp |
| 75 to 79 | 58 | 4.4% | 6.7% | 48 | 3.9% | 5.5% | +10 | +0.5pp |
| 80 to 84 | 40 | 3.0% | 4.2% | 22 | 1.8% | 3.7% | +18 | +1.2pp |
| 85 and over | 17 | 1.3% | 4.0% | 16 | 1.3% | 3.8% | +1 | 0.0pp |
| Total | 1,332 | 100.0% | 100.0% | 1,235 | 100.0% | 100.0% | +97 | 0.0pp |