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.

Key insight

In 2021, 65 to 69 year olds was the largest age group among residents in Nullaki, accounting for 15.6% (5 people). This share was higher than Albany (C) (6.7%). Since 2016, the biggest change was in 45 to 49 year olds, which decreased by 729 people and 9.3 percentage points.

Section overview

Age structure - Five year age groups

Nullaki - Total persons (Usual residence)

This table summarises five year age groups for Nullaki in 2021 for persons, with comparison against Albany (C) and change since 2016.

Age structure - Five year age groups change

Absolute change in category counts between 2016 and 2021.

2016
2021

0 to 4

-331

-4.2pp

5 to 9

-514

-6.6pp

10 to 14

-619

-7.9pp

15 to 19

-653

-8.3pp

20 to 24

-539

-6.9pp

25 to 29

-329

-4.2pp

30 to 34

-298

-3.8pp

35 to 39

-409

-5.2pp

40 to 44

-511

-6.5pp

45 to 49

-729

-9.3pp

50 to 54

-681

+0.7pp

55 to 59

-622

-7.9pp

60 to 64

-552

+5.4pp

65 to 69

-430

+10.1pp

70 to 74

-251

-3.2pp

75 to 79

-164

-2.1pp

80 to 84

-128

-1.6pp

85 and over

-77

-1.0pp

Data table

Five year age groups for Nullaki. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Albany (C).

Five year age groups for Nullaki. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Albany (C).
Five year age groups for Nullaki. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Albany (C).
Category20212016Change
Count%Albany (C)%Count%Albany (C)%Countpp
0 to 400.0%5.0%3314.2%5.4%-331-4.2pp
5 to 900.0%5.9%5146.6%6.3%-514-6.6pp
10 to 1400.0%6.7%6197.9%6.9%-619-7.9pp
15 to 1900.0%6.2%6538.3%6.6%-653-8.3pp
20 to 2400.0%4.4%5396.9%4.8%-539-6.9pp
25 to 2900.0%5.1%3294.2%5.3%-329-4.2pp
30 to 3400.0%5.6%2983.8%5.3%-298-3.8pp
35 to 3900.0%5.4%4095.2%5.4%-409-5.2pp
40 to 4400.0%5.5%5116.5%6.1%-511-6.5pp
45 to 4900.0%6.2%7299.3%6.8%-729-9.3pp
50 to 5439.4%6.6%6848.7%6.7%-681+0.7pp
55 to 5900.0%6.8%6227.9%7.2%-622-7.9pp
60 to 64412.5%7.2%5567.1%6.8%-552+5.4pp
65 to 69515.6%6.7%4355.5%6.5%-430+10.1pp
70 to 7400.0%6.2%2513.2%4.8%-251-3.2pp
75 to 7900.0%4.3%1642.1%3.7%-164-2.1pp
80 to 8400.0%3.1%1281.6%2.7%-128-1.6pp
85 and over00.0%3.0%771.0%2.9%-77-1.0pp
Total32100.0%100.0%7,840100.0%100.0%-7,8080.0pp