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 Northern Grampians (S), accounting for 8.2% (977 people). This share was higher than Regional Vic. (7%). Since 2016, the biggest change was in 30 to 34 year olds, which increased by 223 people and 1.7 percentage points.
Section overview
Age structure - Five year age groups
Northern Grampians (S) - Total persons (Usual residence)
This table summarises five year age groups for Northern Grampians (S) in 2021 for persons, with comparison against Regional Vic. and change since 2016.
Chart view
Age structure - Five year age groups snapshot
2021 distribution by category for Northern Grampians (S), with comparison markers for Regional Vic..
0 to 4
2021 count
577
% of total
4.8%
Change from 2016
+0.3pp
577
4.8%
+0.3pp
5 to 9
2021 count
605
% of total
5.1%
Change from 2016
+0.2pp
605
5.1%
+0.2pp
10 to 14
2021 count
613
% of total
5.1%
Change from 2016
-0.5pp
613
5.1%
-0.5pp
15 to 19
2021 count
557
% of total
4.7%
Change from 2016
-1.1pp
557
4.7%
-1.1pp
20 to 24
2021 count
558
% of total
4.7%
Change from 2016
+0.2pp
558
4.7%
+0.2pp
25 to 29
2021 count
638
% of total
5.3%
Change from 2016
+0.2pp
638
5.3%
+0.2pp
30 to 34
2021 count
701
% of total
5.9%
Change from 2016
+1.7pp
701
5.9%
+1.7pp
35 to 39
2021 count
579
% of total
4.8%
Change from 2016
+0.3pp
579
4.8%
+0.3pp
40 to 44
2021 count
543
% of total
4.5%
Change from 2016
-1.3pp
543
4.5%
-1.3pp
45 to 49
2021 count
644
% of total
5.4%
Change from 2016
-1.1pp
644
5.4%
-1.1pp
50 to 54
2021 count
813
% of total
6.8%
Change from 2016
-0.9pp
813
6.8%
-0.9pp
55 to 59
2021 count
915
% of total
7.7%
Change from 2016
0.0pp
915
7.7%
0.0pp
60 to 64
2021 count
977
% of total
8.2%
Change from 2016
-0.1pp
977
8.2%
-0.1pp
65 to 69
2021 count
956
% of total
8.0%
Change from 2016
0.0pp
956
8.0%
0.0pp
70 to 74
2021 count
855
% of total
7.2%
Change from 2016
+1.2pp
855
7.2%
+1.2pp
75 to 79
2021 count
643
% of total
5.4%
Change from 2016
+1.0pp
643
5.4%
+1.0pp
80 to 84
2021 count
376
% of total
3.1%
Change from 2016
+0.1pp
376
3.1%
+0.1pp
85 and over
2021 count
388
% of total
3.2%
Change from 2016
-0.3pp
388
3.2%
-0.3pp
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+58
+0.3pp
5 to 9
+40
+0.2pp
10 to 14
-23
-0.5pp
15 to 19
-110
-1.1pp
20 to 24
+47
+0.2pp
25 to 29
+52
+0.2pp
30 to 34
+223
+1.7pp
35 to 39
+64
+0.3pp
40 to 44
-116
-1.3pp
45 to 49
-100
-1.1pp
50 to 54
-72
-0.9pp
55 to 59
+38
0.0pp
60 to 64
+25
-0.1pp
65 to 69
+45
0.0pp
70 to 74
+165
+1.2pp
75 to 79
+137
+1.0pp
80 to 84
+34
+0.1pp
85 and over
-8
-0.3pp
Data table
Five year age groups for Northern Grampians (S). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Regional Vic..
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Regional Vic.% | Count | % | Regional Vic.% | Count | pp | |
| 0 to 4 | 577 | 4.8% | 5.4% | 519 | 4.5% | 5.8% | +58 | +0.3pp |
| 5 to 9 | 605 | 5.1% | 6.0% | 565 | 4.9% | 6.3% | +40 | +0.2pp |
| 10 to 14 | 613 | 5.1% | 6.2% | 636 | 5.6% | 6.1% | -23 | -0.5pp |
| 15 to 19 | 557 | 4.7% | 5.6% | 667 | 5.8% | 6.1% | -110 | -1.1pp |
| 20 to 24 | 558 | 4.7% | 5.1% | 511 | 4.5% | 5.5% | +47 | +0.2pp |
| 25 to 29 | 638 | 5.3% | 5.8% | 586 | 5.1% | 5.4% | +52 | +0.2pp |
| 30 to 34 | 701 | 5.9% | 5.9% | 478 | 4.2% | 5.5% | +223 | +1.7pp |
| 35 to 39 | 579 | 4.8% | 5.9% | 515 | 4.5% | 5.4% | +64 | +0.3pp |
| 40 to 44 | 543 | 4.5% | 5.6% | 659 | 5.8% | 6.1% | -116 | -1.3pp |
| 45 to 49 | 644 | 5.4% | 6.1% | 744 | 6.5% | 6.6% | -100 | -1.1pp |
| 50 to 54 | 813 | 6.8% | 6.4% | 885 | 7.7% | 6.8% | -72 | -0.9pp |
| 55 to 59 | 915 | 7.7% | 6.7% | 877 | 7.7% | 7.1% | +38 | 0.0pp |
| 60 to 64 | 977 | 8.2% | 7.0% | 952 | 8.3% | 6.9% | +25 | -0.1pp |
| 65 to 69 | 956 | 8.0% | 6.7% | 911 | 8.0% | 6.6% | +45 | 0.0pp |
| 70 to 74 | 855 | 7.2% | 6.0% | 690 | 6.0% | 4.9% | +165 | +1.2pp |
| 75 to 79 | 643 | 5.4% | 4.2% | 506 | 4.4% | 3.6% | +137 | +1.0pp |
| 80 to 84 | 376 | 3.1% | 2.8% | 342 | 3.0% | 2.6% | +34 | +0.1pp |
| 85 and over | 388 | 3.2% | 2.7% | 396 | 3.5% | 2.7% | -8 | -0.3pp |
| Total | 11,948 | 100.0% | 100.0% | 11,439 | 100.0% | 100.0% | +509 | 0.0pp |