Suburb profile · ABS Census 2021
Sea Lake suburb profile
Sea Lake, VIC · Postcode 3533
This Sea Lake suburb profile summarises official Australian Bureau of Statistics Census 2021 data for Sea Lake, VIC (postcode 3533). 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 Sea Lake with nearby suburbs.
Sea Lake at a glance
Population
619
Median rent
$140/wk
Household income
$883/wk
Median age
51
Sea Lake 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% over 10 years
Population
619
was 640 in 2016
-21 · -3.3%
Median rent
$140/wk
was $125/wk in 2016
+$15 · +12%
Household income
$883/wk
was $804/wk in 2016
+$79 · +9.8%
Median age
51
was 51 in 2016
0 · 0%
Dig deeper: Sea Lake population growth · Sea Lake then and now
Sea Lake vs nearby & VIC
Median Census 2021 figures for Sea Lake, nearby suburbs (8), and the VIC state median (suburbs with 1,000+ people).
Rent
-61.7% vs area
- Sea Lake$140/wk
- Nearby$200/wk
- VIC$366/wk
Household income
-51.3% vs area
- Sea Lake$883/wk
- Nearby$984.5/wk
- VIC$1,813/wk
Median age
+27.5% vs area
- Sea Lake51
- Nearby56
- VIC40
Personal income
-34.7% vs area
- Sea Lake$524/wk
- Nearby$559/wk
- VIC$803/wk
Nearby uses the same postcode first, then larger suburbs in VIC.
Socio-economic profile
How Sea Lake compares to other Australian suburbs on income, education and occupation — from official ABS SEIFA 2021 data.
Sea Lake sits below average for socio-economic advantage compared with suburbs Australia-wide. It shows limited economic resources and lower education and occupation levels.
Relative disadvantage (IRSD)
Decile 2923.1
Lower score / decile = more relative disadvantage
Advantage & disadvantage (IRSAD)
Decile 2891.8
Higher score / decile = more relative advantage
Economic resources (IER)
Decile 2936.7
Access to economic resources (income, housing)
Education & occupation (IEO)
Decile 2900.5
Education and occupational skill levels
Source: ABS SEIFA 2021. See methodology.
Sea Lake on the map
OpenStreetMap outline for Sea Lake, VIC.
Map data © OpenStreetMap contributors. Boundary matching is approximate.
Sea Lake people
- Population
- 619
- Median age
- 51
- Born overseas
- 7.6%
- Average household size
- 2.1
Total usual residents (Census 2021)
Median age of residents in years
Percentage born outside Australia
Average number of people per household
Sea Lake income
- Median household income
- $883/wk
- Median personal income
- $524/wk
Median total weekly household income
Median total weekly personal income
Sea Lake housing
- Median rent
- $140/wk
- Median mortgage repayment
- $650/mo
- Separate houses
- 75.8%
- Flats & apartments
- 0%
- Owned outright
- 44.4%
- Mortgaged
- 19.6%
- Rented
- 11.8%
- Unoccupied dwellings
- 20.2%
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
Sea Lake work
- Employment to population
- 44.9%
- Unemployment rate
- 4.8%
- Year 12 or above
- 35.7%
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 3533)
Compare Sea Lake with nearby suburbs
Sea Lake in numbers
Sea Lake had 619 residents at the 2021 Census. The median age is 51, 24% above the typical VIC suburb. The average household has 2.1 people. 7.6% of residents were born overseas.
Among occupied homes, 44.4% own their home outright, 19.6% are paying a mortgage, 11.8% rent. Separate houses make up 75.8% of dwellings, with 0% in flats or apartments. Median rent was $140/wk, 60% below the typical VIC suburb.
Median household income was $883/wk, 50% below the typical VIC suburb. The unemployment rate on Census night was 4.8%. 35.7% of adults had completed Year 12 or above. On the ABS SEIFA index of relative socio-economic disadvantage it sits in decile 2 nationally (1 is most disadvantaged, 10 least).
Between the 2016 and 2021 Censuses the population fell 3.3% (from 640 to 619). Median rent moved from $125/wk to $140/wk (+12%).
Sea Lake suburb FAQs
- What is the median rent in Sea Lake, VIC?
- The median weekly rent in Sea Lake was $140/wk at the 2021 Census (ABS).
- How many people live in Sea Lake, VIC?
- Sea Lake had 619 residents at the 2021 Census, down 3.3% from 2016.
- What is the median household income in Sea Lake?
- Median household income in Sea Lake was $883/wk at the 2021 Census.
- Do most people rent or own in Sea Lake?
- 11.8% of occupied homes in Sea Lake were rented, 44.4% were owned outright and 19.6% were owned with a mortgage.
About this Sea Lake suburb profile
Figures are from the ABS Census of Population and Housing 2021 (General Community Profile) for the Suburbs and Localities boundary matching Sea Lake. 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