Suburb profile · ABS Census 2021
Seacliff suburb profile
Seacliff, SA · Postcode 5049
This Seacliff suburb profile summarises official Australian Bureau of Statistics Census 2021 data for Seacliff, SA (postcode 5049). 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 Seacliff with nearby suburbs.
Seacliff at a glance
Population
2,117
Median rent
$350/wk
Household income
$1,931/wk
Median age
46
Seacliff 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
+8.3% over 10 years
Population
2,117
was 1,957 in 2016
+160 · +8.2%
Median rent
$350/wk
was $321/wk in 2016
+$29 · +9%
Household income
$1,931/wk
was $1,610/wk in 2016
+$321 · +19.9%
Median age
46
was 44 in 2016
+2 · +4.5%
Dig deeper: Seacliff population growth · Seacliff then and now
Seacliff vs nearby & Greater Adelaide
Median Census 2021 figures for Seacliff, nearby suburbs (8), and the Adelaide metro median (suburbs with 1,000+ people).
Rent
+7.4% vs area
- Seacliff$350/wk
- Nearby$365/wk
- Adelaide$326/wk
Household income
+20.2% vs area
- Seacliff$1,931/wk
- Nearby$1,717/wk
- Adelaide$1,607/wk
Median age
+15% vs area
- Seacliff46
- Nearby45
- Adelaide40
Personal income
+18.6% vs area
- Seacliff$948/wk
- Nearby$861/wk
- Adelaide$799/wk
Nearby uses the same postcode first, then larger suburbs in SA. See Adelaide rankings.
Socio-economic profile
How Seacliff compares to other Australian suburbs on income, education and occupation — from official ABS SEIFA 2021 data.
Seacliff ranks among Australia's most advantaged suburbs. It shows high education and occupation levels.
Relative disadvantage (IRSD)
Decile 91,065.7
Lower score / decile = more relative disadvantage
Advantage & disadvantage (IRSAD)
Decile 91,063.7
Higher score / decile = more relative advantage
Economic resources (IER)
Decile 61,029.7
Access to economic resources (income, housing)
Education & occupation (IEO)
Decile 101,090.6
Education and occupational skill levels
Source: ABS SEIFA 2021. See methodology.
Seacliff on the map
OpenStreetMap outline for Seacliff, SA.
Map data © OpenStreetMap contributors. Boundary matching is approximate.
Seacliff people
- Population
- 2,117
- Median age
- 46
- Born overseas
- 22.9%
- Average household size
- 2.4
Total usual residents (Census 2021)
Median age of residents in years
Percentage born outside Australia
Average number of people per household
Seacliff income
- Median household income
- $1,931/wk
- Median personal income
- $948/wk
Median total weekly household income
Median total weekly personal income
Seacliff housing
- Median rent
- $350/wk
- Median mortgage repayment
- $1,950/mo
- Separate houses
- 60.8%
- Flats & apartments
- 12.4%
- Owned outright
- 38.4%
- Mortgaged
- 30.6%
- Rented
- 21.9%
- Unoccupied dwellings
- 7.3%
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
Seacliff work
- Employment to population
- 60%
- Unemployment rate
- 4.4%
- Year 12 or above
- 68.9%
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 5049)
Compare Seacliff with nearby suburbs
Seacliff in numbers
Seacliff had 2,117 residents at the 2021 Census, making it the 286th most populous suburb or locality in SA out of 1,624. The median age is 46, 10% above the typical SA suburb. The average household has 2.4 people. 22.9% of residents were born overseas.
Among occupied homes, 38.4% own their home outright, 30.6% are paying a mortgage, 21.9% rent. Separate houses make up 60.8% of dwellings, with 12.4% in flats or apartments. Median rent was $350/wk, 13% above the typical SA suburb.
Median household income was $1,931/wk, 26% above the typical SA suburb. The unemployment rate on Census night was 4.4%. 68.9% of adults had completed Year 12 or above. On the ABS SEIFA index of relative socio-economic disadvantage it sits in decile 9 nationally (1 is most disadvantaged, 10 least).
Between the 2016 and 2021 Censuses the population grew 8.2% (from 1,957 to 2,117). Median rent moved from $321/wk to $350/wk (+9%).
Seacliff suburb FAQs
- What is the median rent in Seacliff, SA?
- The median weekly rent in Seacliff was $350/wk at the 2021 Census (ABS).
- How many people live in Seacliff, SA?
- Seacliff had 2,117 residents at the 2021 Census, up 8.2% from 2016.
- What is the median household income in Seacliff?
- Median household income in Seacliff was $1,931/wk at the 2021 Census.
- Do most people rent or own in Seacliff?
- 21.9% of occupied homes in Seacliff were rented, 38.4% were owned outright and 30.6% were owned with a mortgage.
About this Seacliff suburb profile
Figures are from the ABS Census of Population and Housing 2021 (General Community Profile) for the Suburbs and Localities boundary matching Seacliff. 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