Suburb in Onkaparinga

Flagstaff Hill, SA

Flagstaff Hill had a population of 10,184 at the 2021 Census (+2.4% since 2016). Median age 42.8. Median weekly household income $2,075. Source: ABS Census 2021, via Censible. Census 2026 data arrives June 2027.

Flagstaff Hill at a glance

What the 2021 Census says, compared with South Australia.

In Adelaide - South

Between the 2016 and 2021 censuses, Flagstaff Hill's population grew by 2.4% to 10,184, slower than South Australia as a whole (+6.3%). With a median age of 42.8, it is older than the SA average (40.9). Children under 10 make up 10.9% of residents, and people aged 70 and over 13.9%.

10.4% of households rent, a smaller share than the SA average of 27.9%. 38.8% own their home outright. Almost every home is a house; flats and apartments are 0.3% of homes. The 2021 Census counted 3,617 households.

The median household earns $2,075 a week, above the SA average of $1,456. Renters pay a median $380 a week, and households with a mortgage repay $1,740 a month.

28.4% of residents were born overseas, more than the SA average of 25.2%. 13.6% use a language other than English at home. 52.8% report no religion, higher than the SA average (48.9%).

Key figures

2021 Census, Flagstaff Hill beside SA and Australia.

MeasureFlagstaff HillSAAustralia
Population10,1841,781,50125,422,828
Growth since 2016+2.4%+6.3%+8.6%
Median age42.840.938.2
Households3,617691,3449,275,123
Flats and apartments0.3%6.8%14.3%
Renting10.4%27.9%31.1%
Owned outright38.8%33.3%31.4%
Median household income a week$2,075$1,456$1,747
Median rent a week$380$300$376
Median mortgage repayment a month$1,740$1,505$1,866
Born overseas28.4%25.2%29.3%
Other language at home13.6%18.7%23.6%
No religion52.8%48.9%41.9%

Source: ABS Census 2021, via Censible. How the figures are built

Population and age

Each census since 2011, and the age profile in 2021.

Population

+2.4% since 2016.

Population · each census
  1. 9,9172011
  2. 9,9502016
  3. 10,1842021

Age

Median age 42.8, against 40.9 for South Australia.

Flagstaff Hill South Australia
Share of people by age, Flagstaff Hill and South Australia
0–910.9%
10–1912.7%
20–2910.3%
30–3911.6%
40–4913.6%
50–5914.2%
60–6912.8%
70–7910.6%
80+3.4%

Source: ABS Census 2021, via Censible. How the figures are built

Cultural background

The largest groups in Flagstaff Hill at the 2021 Census.

Ancestry

Top 5 · ancestry
  1. English46.4%
  2. Australian33.5%
  3. Scottish10.0%
  4. Irish8.8%
  5. German8.2%

Languages at home

Top 5 · languages at home
  1. Mandarin2.3%
  2. Greek0.8%
  3. Persian (excluding Dari)0.7%
  4. Polish0.6%
  5. Punjabi0.6%

Country of birth

Top 5 · country of birth
  1. England10.0%
  2. China1.8%
  3. South Africa1.6%
  4. India1.4%
  5. New Zealand1.1%

Source: ABS Census 2021, via Censible. How the figures are built

Around Flagstaff Hill

The places it belongs to, sits beside and contains.

Explore Flagstaff Hill in Censible

Every census figure for Flagstaff Hill, mapped and compared with any other place. A free account takes a minute.