Suburb profile · ABS Census 2021
Diddillibah suburb profile
Diddillibah, QLD · Postcode 4559
This Diddillibah suburb profile summarises official Australian Bureau of Statistics Census 2021 data for Diddillibah, QLD (postcode 4559). 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 Diddillibah with nearby suburbs.
Diddillibah at a glance
Population
1,703
Median rent
$330/wk
Household income
$1,424/wk
Median age
46
Diddillibah 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
+31.5% over 10 years
Population
1,703
was 1,403 in 2016
+300 · +21.4%
Median rent
$330/wk
was $280/wk in 2016
+$50 · +17.9%
Household income
$1,424/wk
was $1,267/wk in 2016
+$157 · +12.4%
Median age
46
was 45 in 2016
+1 · +2.2%
Dig deeper: Diddillibah population growth · Diddillibah then and now
Diddillibah vs nearby & QLD
Median Census 2021 figures for Diddillibah, nearby suburbs (8), and the QLD state median (suburbs with 1,000+ people).
Rent
-10.8% vs area
- Diddillibah$330/wk
- Nearby$420/wk
- QLD$370/wk
Household income
-17.2% vs area
- Diddillibah$1,424/wk
- Nearby$1,683/wk
- QLD$1,719/wk
Median age
+17.9% vs area
- Diddillibah46
- Nearby41
- QLD39
Personal income
-13.7% vs area
- Diddillibah$683/wk
- Nearby$745/wk
- QLD$791/wk
Nearby uses the same postcode first, then larger suburbs in QLD.
Socio-economic profile
How Diddillibah compares to other Australian suburbs on income, education and occupation — from official ABS SEIFA 2021 data.
Diddillibah sits around the national middle for socio-economic advantage.
Relative disadvantage (IRSD)
Decile 4993.1
Lower score / decile = more relative disadvantage
Advantage & disadvantage (IRSAD)
Decile 6989.9
Higher score / decile = more relative advantage
Economic resources (IER)
Decile 61,032.7
Access to economic resources (income, housing)
Education & occupation (IEO)
Decile 6984.7
Education and occupational skill levels
Source: ABS SEIFA 2021. See methodology.
Diddillibah on the map
OpenStreetMap outline for Diddillibah, QLD.
Map data © OpenStreetMap contributors. Boundary matching is approximate.
Diddillibah people
- Population
- 1,703
- Median age
- 46
- Born overseas
- 18.6%
- Average household size
- 2.6
Total usual residents (Census 2021)
Median age of residents in years
Percentage born outside Australia
Average number of people per household
Diddillibah income
- Median household income
- $1,424/wk
- Median personal income
- $683/wk
Median total weekly household income
Median total weekly personal income
Diddillibah housing
- Median rent
- $330/wk
- Median mortgage repayment
- $2,200/mo
- Separate houses
- 87.4%
- Flats & apartments
- 0.6%
- Owned outright
- 44.4%
- Mortgaged
- 30.2%
- Rented
- 12.6%
- Unoccupied dwellings
- 4.1%
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
Diddillibah work
- Employment to population
- 53.3%
- Unemployment rate
- 6.7%
- Year 12 or above
- 54.2%
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 4559)
Compare Diddillibah with nearby suburbs
Diddillibah in numbers
Diddillibah had 1,703 residents at the 2021 Census. The median age is 46, 15% above the typical QLD suburb. The average household has 2.6 people. 18.6% of residents were born overseas.
Among occupied homes, 44.4% own their home outright, 30.2% are paying a mortgage, 12.6% rent. Separate houses make up 87.4% of dwellings, with 0.6% in flats or apartments. Median rent was $330/wk, 6% below the typical QLD suburb.
Median household income was $1,424/wk, 16% below the typical QLD suburb. The unemployment rate on Census night was 6.7%. 54.2% of adults had completed Year 12 or above. On the ABS SEIFA index of relative socio-economic disadvantage it sits in decile 4 nationally (1 is most disadvantaged, 10 least).
Between the 2016 and 2021 Censuses the population grew 21.4% (from 1,403 to 1,703). Median rent moved from $280/wk to $330/wk (+17.9%).
Diddillibah suburb FAQs
- What is the median rent in Diddillibah, QLD?
- The median weekly rent in Diddillibah was $330/wk at the 2021 Census (ABS).
- How many people live in Diddillibah, QLD?
- Diddillibah had 1,703 residents at the 2021 Census, up 21.4% from 2016.
- What is the median household income in Diddillibah?
- Median household income in Diddillibah was $1,424/wk at the 2021 Census.
- Do most people rent or own in Diddillibah?
- 12.6% of occupied homes in Diddillibah were rented, 44.4% were owned outright and 30.2% were owned with a mortgage.
About this Diddillibah suburb profile
Figures are from the ABS Census of Population and Housing 2021 (General Community Profile) for the Suburbs and Localities boundary matching Diddillibah. 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