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, 5 to 9 year olds was the largest age group among residents in Katherine East, accounting for 9.9% (302 people). This share was higher than Katherine (T) (7.9%). Since 2016, the biggest change was in 15 to 19 year olds, which decreased by 69 people and 2.1 percentage points.
Section overview
Age structure - Five year age groups
Katherine East - Total persons (Usual residence)
This table summarises five year age groups for Katherine East in 2021 for persons, with comparison against Katherine (T) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Katherine East, with comparison markers for Katherine (T).
0 to 4
2021 count
273
% of total
8.9%
Change from 2016
-1.0pp
273
8.9%
-1.0pp
5 to 9
2021 count
302
% of total
9.9%
Change from 2016
+2.1pp
302
9.9%
+2.1pp
10 to 14
2021 count
262
% of total
8.6%
Change from 2016
+0.4pp
262
8.6%
+0.4pp
15 to 19
2021 count
175
% of total
5.7%
Change from 2016
-2.1pp
175
5.7%
-2.1pp
20 to 24
2021 count
221
% of total
7.2%
Change from 2016
+1.1pp
221
7.2%
+1.1pp
25 to 29
2021 count
296
% of total
9.7%
Change from 2016
+0.3pp
296
9.7%
+0.3pp
30 to 34
2021 count
296
% of total
9.7%
Change from 2016
+1.0pp
296
9.7%
+1.0pp
35 to 39
2021 count
258
% of total
8.4%
Change from 2016
+1.3pp
258
8.4%
+1.3pp
40 to 44
2021 count
205
% of total
6.7%
Change from 2016
+0.3pp
205
6.7%
+0.3pp
45 to 49
2021 count
151
% of total
4.9%
Change from 2016
-2.1pp
151
4.9%
-2.1pp
50 to 54
2021 count
179
% of total
5.8%
Change from 2016
0.0pp
179
5.8%
0.0pp
55 to 59
2021 count
138
% of total
4.5%
Change from 2016
+0.5pp
138
4.5%
+0.5pp
60 to 64
2021 count
119
% of total
3.9%
Change from 2016
-0.2pp
119
3.9%
-0.2pp
65 to 69
2021 count
69
% of total
2.3%
Change from 2016
-0.8pp
69
2.3%
-0.8pp
70 to 74
2021 count
52
% of total
1.7%
Change from 2016
-0.5pp
52
1.7%
-0.5pp
75 to 79
2021 count
43
% of total
1.4%
Change from 2016
+0.2pp
43
1.4%
+0.2pp
80 to 84
2021 count
20
% of total
0.7%
Change from 2016
+0.4pp
20
0.7%
+0.4pp
85 and over
2021 count
7
% of total
0.2%
Change from 2016
+0.1pp
7
0.2%
+0.1pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-35
-1.0pp
5 to 9
+59
+2.1pp
10 to 14
+8
+0.4pp
15 to 19
-69
-2.1pp
20 to 24
+30
+1.1pp
25 to 29
+4
+0.3pp
30 to 34
+26
+1.0pp
35 to 39
+36
+1.3pp
40 to 44
+6
+0.3pp
45 to 49
-66
-2.1pp
50 to 54
-2
0.0pp
55 to 59
+13
+0.5pp
60 to 64
-9
-0.2pp
65 to 69
-27
-0.8pp
70 to 74
-15
-0.5pp
75 to 79
+7
+0.2pp
80 to 84
+10
+0.4pp
85 and over
+4
+0.1pp
Data table
Five year age groups for Katherine East. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Katherine (T).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Katherine (T)% | Count | % | Katherine (T)% | Count | pp | |
| 0 to 4 | 273 | 8.9% | 7.3% | 308 | 9.9% | 8.2% | -35 | -1.0pp |
| 5 to 9 | 302 | 9.9% | 7.9% | 243 | 7.8% | 7.5% | +59 | +2.1pp |
| 10 to 14 | 262 | 8.6% | 7.3% | 254 | 8.2% | 7.1% | +8 | +0.4pp |
| 15 to 19 | 175 | 5.7% | 5.2% | 244 | 7.8% | 5.9% | -69 | -2.1pp |
| 20 to 24 | 221 | 7.2% | 6.9% | 191 | 6.1% | 6.6% | +30 | +1.1pp |
| 25 to 29 | 296 | 9.7% | 9.2% | 292 | 9.4% | 9.3% | +4 | +0.3pp |
| 30 to 34 | 296 | 9.7% | 10.0% | 270 | 8.7% | 8.9% | +26 | +1.0pp |
| 35 to 39 | 258 | 8.4% | 8.3% | 222 | 7.1% | 6.9% | +36 | +1.3pp |
| 40 to 44 | 205 | 6.7% | 6.2% | 199 | 6.4% | 6.1% | +6 | +0.3pp |
| 45 to 49 | 151 | 4.9% | 5.7% | 217 | 7.0% | 7.5% | -66 | -2.1pp |
| 50 to 54 | 179 | 5.8% | 6.5% | 181 | 5.8% | 6.9% | -2 | 0.0pp |
| 55 to 59 | 138 | 4.5% | 5.5% | 125 | 4.0% | 5.7% | +13 | +0.5pp |
| 60 to 64 | 119 | 3.9% | 5.1% | 128 | 4.1% | 5.1% | -9 | -0.2pp |
| 65 to 69 | 69 | 2.3% | 3.7% | 96 | 3.1% | 3.5% | -27 | -0.8pp |
| 70 to 74 | 52 | 1.7% | 2.5% | 67 | 2.2% | 2.4% | -15 | -0.5pp |
| 75 to 79 | 43 | 1.4% | 1.5% | 36 | 1.2% | 1.6% | +7 | +0.2pp |
| 80 to 84 | 20 | 0.7% | 0.8% | 10 | 0.3% | 0.5% | +10 | +0.4pp |
| 85 and over | 7 | 0.2% | 0.5% | 3 | 0.1% | 0.5% | +4 | +0.1pp |
| Total | 3,061 | 100.0% | 100.0% | 3,114 | 100.0% | 100.0% | -53 | 0.0pp |