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 Bordertown, accounting for 17.7% (547 people). This share was lower than Tatiara (DC) (18.4%). Since 2016, the biggest change was in Young workforce (25 to 34), which increased by 55 people and 1.2 percentage points.
Section overview
Age structure - Service age groups
Bordertown - Total persons (Usual residence)
This table summarises service age groups for Bordertown in 2021 for persons, with comparison against Tatiara (DC) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Bordertown, with comparison markers for Tatiara (DC).
Babies and pre-schoolers (0 to 4)
2021 count
178
% of total
5.8%
Change from 2016
-0.5pp
178
5.8%
-0.5pp
Primary schoolers (5 to 11)
2021 count
239
% of total
7.7%
Change from 2016
+0.4pp
239
7.7%
+0.4pp
Secondary schoolers (12 to 17)
2021 count
201
% of total
6.5%
Change from 2016
-0.7pp
201
6.5%
-0.7pp
Tertiary education and independence (18 to 24)
2021 count
254
% of total
8.2%
Change from 2016
-0.4pp
254
8.2%
-0.4pp
Young workforce (25 to 34)
2021 count
438
% of total
14.2%
Change from 2016
+1.2pp
438
14.2%
+1.2pp
Parents and homebuilders (35 to 49)
2021 count
547
% of total
17.7%
Change from 2016
-0.3pp
547
17.7%
-0.3pp
Older workers and pre-retirees (50 to 59)
2021 count
397
% of total
12.8%
Change from 2016
+0.9pp
397
12.8%
+0.9pp
Empty nesters and retirees (60 to 69)
2021 count
328
% of total
10.6%
Change from 2016
-0.4pp
328
10.6%
-0.4pp
Seniors (70 to 84)
2021 count
389
% of total
12.6%
Change from 2016
+0.7pp
389
12.6%
+0.7pp
Elderly aged (85 and over)
2021 count
115
% of total
3.7%
Change from 2016
-0.9pp
115
3.7%
-0.9pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-8
-0.5pp
Primary schoolers (5 to 11)
+22
+0.4pp
Secondary schoolers (12 to 17)
-11
-0.7pp
Tertiary education and independence (18 to 24)
-1
-0.4pp
Young workforce (25 to 34)
+55
+1.2pp
Parents and homebuilders (35 to 49)
+14
-0.3pp
Older workers and pre-retirees (50 to 59)
+47
+0.9pp
Empty nesters and retirees (60 to 69)
+3
-0.4pp
Seniors (70 to 84)
+37
+0.7pp
Elderly aged (85 and over)
-21
-0.9pp
Data table
Service age groups for Bordertown. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Tatiara (DC).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Tatiara (DC)% | Count | % | Tatiara (DC)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 178 | 5.8% | 5.4% | 186 | 6.3% | 5.6% | -8 | -0.5pp |
| Primary schoolers (5 to 11) | 239 | 7.7% | 8.1% | 217 | 7.3% | 9.4% | +22 | +0.4pp |
| Secondary schoolers (12 to 17) | 201 | 6.5% | 7.6% | 212 | 7.2% | 7.9% | -11 | -0.7pp |
| Tertiary education and independence (18 to 24) | 254 | 8.2% | 7.7% | 255 | 8.6% | 7.4% | -1 | -0.4pp |
| Young workforce (25 to 34) | 438 | 14.2% | 12.4% | 383 | 13.0% | 11.0% | +55 | +1.2pp |
| Parents and homebuilders (35 to 49) | 547 | 17.7% | 18.4% | 533 | 18.0% | 19.7% | +14 | -0.3pp |
| Older workers and pre-retirees (50 to 59) | 397 | 12.8% | 14.5% | 350 | 11.9% | 13.8% | +47 | +0.9pp |
| Empty nesters and retirees (60 to 69) | 328 | 10.6% | 12.3% | 325 | 11.0% | 12.5% | +3 | -0.4pp |
| Seniors (70 to 84) | 389 | 12.6% | 11.1% | 352 | 11.9% | 9.4% | +37 | +0.7pp |
| Elderly aged (85 and over) | 115 | 3.7% | 2.5% | 136 | 4.6% | 3.0% | -21 | -0.9pp |
| Total | 3,095 | 100.0% | 100.0% | 2,953 | 100.0% | 100.0% | +142 | 0.0pp |