Population
Service age groups
About this topic
Service age groups divide the population into broad life-stage bands such as children, young adults, working-age adults, and older people. The groupings are designed to reflect typical demand for age-based services and facilities rather than exact five-year cohorts.
This view is useful for planning childcare, schools, recreation, aged services, and other community infrastructure. It works best alongside five year age groups, household type, and dwelling data, which add more detail about who is living in an area and how needs may change over time.
Interpretation notes
- This is a derived grouping rather than a direct Census question, so the age bands are planning-oriented summaries built from standard age data.
- Percentages relate to the total population; use five year age groups when exact cohort detail matters.
Related topics
Key insight
In 2021, Parents and homebuilders (35 to 49) was the most common category among residents in Port Pirie City and Dists (M), accounting for 16.1% (2,781 people). This share was lower than Regional SA (16.4%). Since 2016, the biggest change was in Parents and homebuilders (35 to 49), which decreased by 283 people and 1.5 percentage points.
Section overview
Age structure - Service age groups
Port Pirie City and Dists (M) - Total persons (Usual residence)
This table summarises service age groups for Port Pirie City and Dists (M) in 2021 for persons, with comparison against Regional SA and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Port Pirie City and Dists (M), with comparison markers for Regional SA.
Babies and pre-schoolers (0 to 4)
2021 count
915
% of total
5.3%
Change from 2016
-0.1pp
915
5.3%
-0.1pp
Primary schoolers (5 to 11)
2021 count
1,421
% of total
8.2%
Change from 2016
-0.3pp
1,421
8.2%
-0.3pp
Secondary schoolers (12 to 17)
2021 count
1,339
% of total
7.7%
Change from 2016
-0.7pp
1,339
7.7%
-0.7pp
Tertiary education and independence (18 to 24)
2021 count
1,374
% of total
8.0%
Change from 2016
+0.4pp
1,374
8.0%
+0.4pp
Young workforce (25 to 34)
2021 count
1,916
% of total
11.1%
Change from 2016
+0.8pp
1,916
11.1%
+0.8pp
Parents and homebuilders (35 to 49)
2021 count
2,781
% of total
16.1%
Change from 2016
-1.5pp
2,781
16.1%
-1.5pp
Older workers and pre-retirees (50 to 59)
2021 count
2,372
% of total
13.7%
Change from 2016
-0.5pp
2,372
13.7%
-0.5pp
Empty nesters and retirees (60 to 69)
2021 count
2,243
% of total
13.0%
Change from 2016
+0.4pp
2,243
13.0%
+0.4pp
Seniors (70 to 84)
2021 count
2,406
% of total
13.9%
Change from 2016
+1.5pp
2,406
13.9%
+1.5pp
Elderly aged (85 and over)
2021 count
526
% of total
3.0%
Change from 2016
+0.1pp
526
3.0%
+0.1pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-28
-0.1pp
Primary schoolers (5 to 11)
-57
-0.3pp
Secondary schoolers (12 to 17)
-117
-0.7pp
Tertiary education and independence (18 to 24)
+46
+0.4pp
Young workforce (25 to 34)
+121
+0.8pp
Parents and homebuilders (35 to 49)
-283
-1.5pp
Older workers and pre-retirees (50 to 59)
-99
-0.5pp
Empty nesters and retirees (60 to 69)
+47
+0.4pp
Seniors (70 to 84)
+254
+1.5pp
Elderly aged (85 and over)
+27
+0.1pp
Data table
Service age groups for Port Pirie City and Dists (M). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Regional SA.
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Regional SA% | Count | % | Regional SA% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 915 | 5.3% | 4.9% | 943 | 5.4% | 5.5% | -28 | -0.1pp |
| Primary schoolers (5 to 11) | 1,421 | 8.2% | 8.1% | 1,478 | 8.5% | 8.6% | -57 | -0.3pp |
| Secondary schoolers (12 to 17) | 1,339 | 7.7% | 7.0% | 1,456 | 8.4% | 7.2% | -117 | -0.7pp |
| Tertiary education and independence (18 to 24) | 1,374 | 8.0% | 6.5% | 1,328 | 7.6% | 6.8% | +46 | +0.4pp |
| Young workforce (25 to 34) | 1,916 | 11.1% | 10.5% | 1,795 | 10.3% | 10.4% | +121 | +0.8pp |
| Parents and homebuilders (35 to 49) | 2,781 | 16.1% | 16.4% | 3,064 | 17.6% | 17.8% | -283 | -1.5pp |
| Older workers and pre-retirees (50 to 59) | 2,372 | 13.7% | 13.9% | 2,471 | 14.2% | 14.6% | -99 | -0.5pp |
| Empty nesters and retirees (60 to 69) | 2,243 | 13.0% | 15.1% | 2,196 | 12.6% | 14.4% | +47 | +0.4pp |
| Seniors (70 to 84) | 2,406 | 13.9% | 14.7% | 2,152 | 12.4% | 12.1% | +254 | +1.5pp |
| Elderly aged (85 and over) | 526 | 3.0% | 2.8% | 499 | 2.9% | 2.7% | +27 | +0.1pp |
| Total | 17,282 | 100.0% | 100.0% | 17,364 | 100.0% | 100.0% | -82 | 0.0pp |