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, 55 to 59 year olds was the largest age group among residents in Ballan, accounting for 8.1% (276 people). This share was higher than Moorabool (S) (6.4%). Since 2016, the biggest change was in 25 to 29 year olds, which increased by 79 people and 1.9 percentage points.
Section overview
Age structure - Five year age groups
Ballan - Total persons (Usual residence)
This table summarises five year age groups for Ballan in 2021 for persons, with comparison against Moorabool (S) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Ballan, with comparison markers for Moorabool (S).
0 to 4
2021 count
188
% of total
5.5%
Change from 2016
-0.5pp
188
5.5%
-0.5pp
5 to 9
2021 count
221
% of total
6.5%
Change from 2016
+0.2pp
221
6.5%
+0.2pp
10 to 14
2021 count
209
% of total
6.2%
Change from 2016
-0.2pp
209
6.2%
-0.2pp
15 to 19
2021 count
165
% of total
4.9%
Change from 2016
-1.8pp
165
4.9%
-1.8pp
20 to 24
2021 count
140
% of total
4.1%
Change from 2016
-0.5pp
140
4.1%
-0.5pp
25 to 29
2021 count
189
% of total
5.6%
Change from 2016
+1.9pp
189
5.6%
+1.9pp
30 to 34
2021 count
215
% of total
6.3%
Change from 2016
+0.9pp
215
6.3%
+0.9pp
35 to 39
2021 count
215
% of total
6.3%
Change from 2016
-0.1pp
215
6.3%
-0.1pp
40 to 44
2021 count
236
% of total
7.0%
Change from 2016
+0.7pp
236
7.0%
+0.7pp
45 to 49
2021 count
209
% of total
6.2%
Change from 2016
-0.1pp
209
6.2%
-0.1pp
50 to 54
2021 count
218
% of total
6.4%
Change from 2016
-3.0pp
218
6.4%
-3.0pp
55 to 59
2021 count
276
% of total
8.1%
Change from 2016
+1.3pp
276
8.1%
+1.3pp
60 to 64
2021 count
223
% of total
6.6%
Change from 2016
+0.5pp
223
6.6%
+0.5pp
65 to 69
2021 count
190
% of total
5.6%
Change from 2016
-0.6pp
190
5.6%
-0.6pp
70 to 74
2021 count
191
% of total
5.6%
Change from 2016
+0.9pp
191
5.6%
+0.9pp
75 to 79
2021 count
148
% of total
4.4%
Change from 2016
+1.2pp
148
4.4%
+1.2pp
80 to 84
2021 count
78
% of total
2.3%
Change from 2016
-0.2pp
78
2.3%
-0.2pp
85 and over
2021 count
83
% of total
2.4%
Change from 2016
+0.2pp
83
2.4%
+0.2pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+8
-0.5pp
5 to 9
+32
+0.2pp
10 to 14
+19
-0.2pp
15 to 19
-35
-1.8pp
20 to 24
+4
-0.5pp
25 to 29
+79
+1.9pp
30 to 34
+55
+0.9pp
35 to 39
+23
-0.1pp
40 to 44
+49
+0.7pp
45 to 49
+20
-0.1pp
50 to 54
-63
-3.0pp
55 to 59
+74
+1.3pp
60 to 64
+41
+0.5pp
65 to 69
+6
-0.6pp
70 to 74
+51
+0.9pp
75 to 79
+51
+1.2pp
80 to 84
+3
-0.2pp
85 and over
+16
+0.2pp
Data table
Five year age groups for Ballan. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Moorabool (S).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Moorabool (S)% | Count | % | Moorabool (S)% | Count | pp | |
| 0 to 4 | 188 | 5.5% | 6.3% | 180 | 6.0% | 6.4% | +8 | -0.5pp |
| 5 to 9 | 221 | 6.5% | 6.8% | 189 | 6.3% | 7.2% | +32 | +0.2pp |
| 10 to 14 | 209 | 6.2% | 7.1% | 190 | 6.4% | 6.7% | +19 | -0.2pp |
| 15 to 19 | 165 | 4.9% | 5.8% | 200 | 6.7% | 6.6% | -35 | -1.8pp |
| 20 to 24 | 140 | 4.1% | 5.1% | 136 | 4.6% | 5.4% | +4 | -0.5pp |
| 25 to 29 | 189 | 5.6% | 6.0% | 110 | 3.7% | 5.2% | +79 | +1.9pp |
| 30 to 34 | 215 | 6.3% | 6.7% | 160 | 5.4% | 5.8% | +55 | +0.9pp |
| 35 to 39 | 215 | 6.3% | 6.9% | 192 | 6.4% | 6.4% | +23 | -0.1pp |
| 40 to 44 | 236 | 7.0% | 6.7% | 187 | 6.3% | 6.9% | +49 | +0.7pp |
| 45 to 49 | 209 | 6.2% | 6.6% | 189 | 6.3% | 7.5% | +20 | -0.1pp |
| 50 to 54 | 218 | 6.4% | 6.9% | 281 | 9.4% | 7.4% | -63 | -3.0pp |
| 55 to 59 | 276 | 8.1% | 6.4% | 202 | 6.8% | 6.8% | +74 | +1.3pp |
| 60 to 64 | 223 | 6.6% | 5.9% | 182 | 6.1% | 6.2% | +41 | +0.5pp |
| 65 to 69 | 190 | 5.6% | 5.4% | 184 | 6.2% | 5.9% | +6 | -0.6pp |
| 70 to 74 | 191 | 5.6% | 5.0% | 140 | 4.7% | 4.2% | +51 | +0.9pp |
| 75 to 79 | 148 | 4.4% | 3.2% | 97 | 3.2% | 2.4% | +51 | +1.2pp |
| 80 to 84 | 78 | 2.3% | 1.7% | 75 | 2.5% | 1.5% | +3 | -0.2pp |
| 85 and over | 83 | 2.4% | 1.7% | 67 | 2.2% | 1.5% | +16 | +0.2pp |
| Total | 3,392 | 100.0% | 100.0% | 2,985 | 100.0% | 100.0% | +407 | 0.0pp |