Suburb profile · ABS Census 2021
Underdale suburb profile
Underdale, SA · Postcode 5032
This Underdale suburb profile summarises official Australian Bureau of Statistics Census 2021 data for Underdale, SA (postcode 5032). Use it as a free suburb report covering population, median rent, household income, age, housing tenure and employment, plus how those figures changed since Census 2016— then compare Underdale with nearby suburbs.
Underdale at a glance
Population
2,429
Median rent
$310/wk
Household income
$1,578/wk
Median age
38
Underdale trends (2016 → 2021)
Change since the previous Census. Historical figures are mapped from State Suburbs (SSC) to today's suburb boundaries.
Population
Census 2011 → 2016 → 2021
+7.9% over 10 years
Population
2,429
was 2,299 in 2016
+130 · +5.7%
Median rent
$310/wk
was $285/wk in 2016
+$25 · +8.8%
Household income
$1,578/wk
was $1,277/wk in 2016
+$301 · +23.6%
Median age
38
was 36 in 2016
+2 · +5.6%
Dig deeper: Underdale population growth · Underdale then and now
Underdale vs nearby & Greater Adelaide
Median Census 2021 figures for Underdale, nearby suburbs (8), and the Adelaide metro median (suburbs with 1,000+ people).
Rent
-4.9% vs area
- Underdale$310/wk
- Nearby$307.5/wk
- Adelaide$326/wk
Household income
-1.8% vs area
- Underdale$1,578/wk
- Nearby$1,447.5/wk
- Adelaide$1,607/wk
Median age
-5% vs area
- Underdale38
- Nearby37
- Adelaide40
Personal income
+3.9% vs area
- Underdale$830/wk
- Nearby$790.5/wk
- Adelaide$799/wk
Nearby uses the same postcode first, then larger suburbs in SA. See Adelaide rankings.
Socio-economic profile
How Underdale compares to other Australian suburbs on income, education and occupation — from official ABS SEIFA 2021 data.
Underdale sits above average for socio-economic advantage compared with suburbs Australia-wide. It shows limited economic resources.
Relative disadvantage (IRSD)
Decile 51,008.5
Lower score / decile = more relative disadvantage
Advantage & disadvantage (IRSAD)
Decile 71,011.7
Higher score / decile = more relative advantage
Economic resources (IER)
Decile 2962.3
Access to economic resources (income, housing)
Education & occupation (IEO)
Decile 81,021.4
Education and occupational skill levels
Source: ABS SEIFA 2021. See methodology.
Underdale on the map
OpenStreetMap outline for Underdale, SA.
Map data © OpenStreetMap contributors. Boundary matching is approximate.
Underdale people
- Population
- 2,429
- Median age
- 38
- Born overseas
- 32.7%
- Average household size
- 2.3
Total usual residents (Census 2021)
Median age of residents in years
Percentage born outside Australia
Average number of people per household
Underdale income
- Median household income
- $1,578/wk
- Median personal income
- $830/wk
Median total weekly household income
Median total weekly personal income
Underdale housing
- Median rent
- $310/wk
- Median mortgage repayment
- $1,786/mo
- Separate houses
- 58.4%
- Flats & apartments
- 17.1%
- Owned outright
- 26.8%
- Mortgaged
- 28%
- Rented
- 33.5%
- Unoccupied dwellings
- 7.7%
Median weekly rent for rented dwellings
Median monthly mortgage repayment
Percentage of dwellings that are separate houses
Percentage of dwellings that are flats or apartments
Percentage of dwellings owned without a mortgage
Percentage of dwellings with a mortgage
Percentage of dwellings rented
Percentage of private dwellings unoccupied on Census night
Underdale work
- Employment to population
- 63.3%
- Unemployment rate
- 5.4%
- Year 12 or above
- 64.7%
Employed persons as a percentage of population aged 15+
Unemployed persons as a percentage of the labour force
Percentage with Year 12 or equivalent as highest school level
Nearby suburb profiles (near 5032)
Compare Underdale with nearby suburbs
Underdale in numbers
Underdale had 2,429 residents at the 2021 Census, making it the 262nd most populous suburb or locality in SA out of 1,624. The median age is 38, 10% below the typical SA suburb. The average household has 2.3 people. 32.7% of residents were born overseas.
Among occupied homes, 26.8% own their home outright, 28% are paying a mortgage, 33.5% rent. Separate houses make up 58.4% of dwellings, with 17.1% in flats or apartments. Median rent was $310/wk, close to the typical SA suburb.
Median household income was $1,578/wk, 3% above the typical SA suburb. The unemployment rate on Census night was 5.4%. 64.7% of adults had completed Year 12 or above. On the ABS SEIFA index of relative socio-economic disadvantage it sits in decile 5 nationally (1 is most disadvantaged, 10 least).
Between the 2016 and 2021 Censuses the population grew 5.7% (from 2,299 to 2,429). Median rent moved from $285/wk to $310/wk (+8.8%).
Underdale suburb FAQs
- What is the median rent in Underdale, SA?
- The median weekly rent in Underdale was $310/wk at the 2021 Census (ABS).
- How many people live in Underdale, SA?
- Underdale had 2,429 residents at the 2021 Census, up 5.7% from 2016.
- What is the median household income in Underdale?
- Median household income in Underdale was $1,578/wk at the 2021 Census.
- Do most people rent or own in Underdale?
- 33.5% of occupied homes in Underdale were rented, 26.8% were owned outright and 28% were owned with a mortgage.
About this Underdale suburb profile
Figures are from the ABS Census of Population and Housing 2021 (General Community Profile) for the Suburbs and Localities boundary matching Underdale. Where shown, 2016 values come from the 2016 State Suburbs (SSC) profile, linked via ABS geographic correspondence — boundaries are not always identical. Medians may be suppressed for very small areas. This is not financial or relocation advice — use it alongside current market data.
Source: ABS Census 2021. Methodology · Richest suburbs in Adelaide