Suburb profile · ABS Census 2021
Nepean Bay suburb profile
Nepean Bay, SA · Postcode 5223
This Nepean Bay suburb profile summarises official Australian Bureau of Statistics Census 2021 data for Nepean Bay, SA (postcode 5223). 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 Nepean Bay with nearby suburbs.
Nepean Bay at a glance
Population
140
Median rent
$235/wk
Household income
$875/wk
Median age
51
Nepean Bay 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
+50.5% over 10 years
Population
140
was 131 in 2016
+9 · +6.9%
Median rent
$235/wk
was $183/wk in 2016
+$52 · +28.4%
Household income
$875/wk
was $737/wk in 2016
+$138 · +18.7%
Median age
51
was 51 in 2016
0 · 0%
Dig deeper: Nepean Bay population growth · Nepean Bay then and now
Nepean Bay vs nearby & SA
Median Census 2021 figures for Nepean Bay, nearby suburbs (8), and the SA state median (suburbs with 1,000+ people).
Rent
-26.6% vs area
- Nepean Bay$235/wk
- Nearby$277.5/wk
- SA$320/wk
Household income
-43.9% vs area
- Nepean Bay$875/wk
- Nearby$1,032/wk
- SA$1,559/wk
Median age
+24.4% vs area
- Nepean Bay51
- Nearby59
- SA41
Personal income
-32.4% vs area
- Nepean Bay$528/wk
- Nearby$568.5/wk
- SA$781/wk
Nearby uses the same postcode first, then larger suburbs in SA.
Socio-economic profile
How Nepean Bay compares to other Australian suburbs on income, education and occupation — from official ABS SEIFA 2021 data.
Nepean Bay sits around the national middle for socio-economic advantage.
Relative disadvantage (IRSD)
Decile 71,034.6
Lower score / decile = more relative disadvantage
Advantage & disadvantage (IRSAD)
Decile 6991.9
Higher score / decile = more relative advantage
Economic resources (IER)
Decile 71,044.1
Access to economic resources (income, housing)
Education & occupation (IEO)
Decile 6997
Education and occupational skill levels
Source: ABS SEIFA 2021. See methodology.
Nepean Bay on the map
OpenStreetMap outline for Nepean Bay, SA.
Map data © OpenStreetMap contributors. Boundary matching is approximate.
Nepean Bay people
- Population
- 140
- Median age
- 51
- Born overseas
- 19.3%
- Average household size
- 2.0
Total usual residents (Census 2021)
Median age of residents in years
Percentage born outside Australia
Average number of people per household
Nepean Bay income
- Median household income
- $875/wk
- Median personal income
- $528/wk
Median total weekly household income
Median total weekly personal income
Nepean Bay housing
- Median rent
- $235/wk
- Median mortgage repayment
- $940/mo
- Separate houses
- 69.6%
- Flats & apartments
- 0%
- Owned outright
- 35.4%
- Mortgaged
- 25.3%
- Rented
- 3.8%
- Unoccupied dwellings
- 29.1%
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
Nepean Bay work
- Employment to population
- 52.1%
- Unemployment rate
- 0%
- Year 12 or above
- 40%
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 5223)
Compare Nepean Bay with nearby suburbs
Nepean Bay in numbers
Nepean Bay had 140 residents at the 2021 Census. The median age is 51, 21% above the typical SA suburb. The average household has 2 people. 19.3% of residents were born overseas.
Among occupied homes, 35.4% own their home outright, 25.3% are paying a mortgage, 3.8% rent. Separate houses make up 69.6% of dwellings, with 0% in flats or apartments. Median rent was $235/wk, 24% below the typical SA suburb.
Median household income was $875/wk, 43% below the typical SA suburb. On the ABS SEIFA index of relative socio-economic disadvantage it sits in decile 7 nationally (1 is most disadvantaged, 10 least).
Between the 2016 and 2021 Censuses the population grew 6.9% (from 131 to 140). Median rent moved from $183/wk to $235/wk (+28.4%).
Nepean Bay suburb FAQs
- What is the median rent in Nepean Bay, SA?
- The median weekly rent in Nepean Bay was $235/wk at the 2021 Census (ABS).
- How many people live in Nepean Bay, SA?
- Nepean Bay had 140 residents at the 2021 Census, up 6.9% from 2016.
- What is the median household income in Nepean Bay?
- Median household income in Nepean Bay was $875/wk at the 2021 Census.
- Do most people rent or own in Nepean Bay?
- 3.8% of occupied homes in Nepean Bay were rented, 35.4% were owned outright and 25.3% were owned with a mortgage.
About this Nepean Bay suburb profile
Figures are from the ABS Census of Population and Housing 2021 (General Community Profile) for the Suburbs and Localities boundary matching Nepean Bay. 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