IRSAD
Relative Socio-economic Advantage and Disadvantage
Score 854
Measures relative socio-economic advantage and disadvantage.
Within AustraliaDecile 1 of 10
Within New South WalesDecile 1 of 10
For state-level context, explore the New South Wales economy.
Housing
Twelve Mile Creek
New South Wales · Census 2021
Median house price not tracked for this suburb
Twelve Mile Creek is a leafy residential suburb of Port Stephens.
Median house price
No Valuer-General median for Twelve Mile Creek.
New South Wales's Valuer-General sales data is open, but we have no suburb median for Twelve Mile Creek from it. ABS median established-house price, Greater Sydney: $1.5M; Rest of NSW: $825k.
How it compares
Household income / wk10th percentile
<$564ABS Census 2021$3,833+
Household income / wk
NSW · AU
NSW median suburb $1,583 · AU median suburb $1,562Twelve Mile Creek $933
Percentiles rank this suburb against New South Wales suburbs that carry the metric — never across states, and never against suburbs where it is missing. Price references are ABS median established-house transfer prices for the Mar 2026 quarter (CC BY 4.0); the suburb figure is a Valuer-General median over a different window, so read the gap as indicative. Income references are the Census 2021 median of the middle suburb in New South Wales and nationally, not a household-weighted median.
People & housing
Population
159
Median age
49 yrs
Income / person / wk
$556
Household income / wk
$933
▼ 41% vs NSW
Median rent / wk
$273
Mortgage / month
$1,582
Who lives here
- Couples with children
- 14%
- −19 pts vs NSW
- Living alone
- 45%
- +20 pts vs NSW
- Unemployment
- 18%
- +13 pts vs NSW
- In the labour force
- 38%
- −20 pts vs NSW
- Bachelor degree or higher
- 5%
- −22 pts vs NSW
- Earning $1–$499 a week
- 35%
- +13 pts vs NSW
- Earning $2,000+ a week
- 5%
- −9 pts vs NSW
Households for the family mix, residents aged 15+ for work, education and income; unemployment is a share of the labour force. NSW figures weight each suburb by its dwellings or residents. ABS Census 2021 (CC BY 4.0). Withheld for very small populations — under 100 residents, or under 50 dwellings, households or workers for the shares that count those.
Housing stock
66 occupied private dwellings
- Separate house 38%
- Flat or apartment 0%
- Semi, terrace & other 62%
NSW: 65% separate houses · 22% flats & apartments
- Owned outright 39%
- Mortgaged 5%
- Rented 44%
- Other & not stated 12%
NSW: 31% owned outright · 33% mortgaged · 33% rented
ABS Census 2021 (CC BY 4.0). Withheld for very small populations — under 100 residents, or under 50 dwellings, households or workers for the shares that count those.
Socio-economic profile
IRSD
Relative Socio-economic Disadvantage
Score 849
Measures relative socio-economic disadvantage only; a higher score means less disadvantage.
Within AustraliaDecile 1 of 10
Within New South WalesDecile 1 of 10
IER
Economic Resources
Score 893
Measures access to economic resources, including income, housing costs and assets.
Within AustraliaDecile 1 of 10
Within New South WalesDecile 1 of 10
IEO
Education and Occupation
Score 851
Measures relative education and occupation characteristics.
Within AustraliaDecile 1 of 10
Within New South WalesDecile 1 of 10
Scores are standardised across Australia to a mean of 1,000 and a standard deviation of 100. Deciles run from 1 (most disadvantaged) to 10 (least disadvantaged).
Source: ABS SEIFA 2021 (CC BY 4.0).
Terrain & hazard exposure
Median elevation
37 m
range 12–111 m
Land below 5 m
0%
0% below 2 m
Shares are the proportion of the suburb's land area. Land where Landsat saw water in at least 1% of clear passes since 1987, excluding permanent water and filtered by DEA's confidence layer. Satellites miss flood peaks, so this is a floor, not a risk estimate; dense high-rise cores can still register tower shadow as water. No flood map lodged in the NSW planning instruments for most of this suburb; most councils keep theirs in a development control plan. Designated for development control; a designation, not a prediction of fire behaviour. Elevation is orthometric height from a 30 m model; no hydrology or drainage is modelled.
Planning & zoning
Zoning mix (share of the suburb's land)
Show on map →- Rural79%
- Conservation18%
- Infrastructure & special purpose1.7%
- Open space & recreation1.3%
In a heritage area
0%
conservation area / Heritage Overlay
Show on map →Listed heritage places
0
items in the LEP heritage schedule
Planning instrument: Port Stephens Local Environmental Plan 2013. Zones are grouped into ten families so states compare; the council's own scheme is the authority for any one lot. Listed-place counts follow each state's own list, so they do not compare across states. Source: NSW EPI Land Zoning; NSW EPI Heritage.
Culture & community
- Dominant religion
- No religion · 35%
- Top language at home
- English only
- No religion
- 35%
- Born overseas
- 5%
- English only at home
- 100%
Schools by sector
- Nearest secondary
- 11.1 km
School sector & type: ACARA (Australian Curriculum, Assessment and Reporting Authority), School Location dataset.
Local council
- Council (LGA)
- Port Stephens
- Population
- 80,070 (2025) · +1.3% in a year
- Area / density
- 858 km² · 93/km²
- Council medians (2021)
- age 47 · $1,372/wk household income · $370/wk rent
- Council-wide house median (2023-24)
- $870k
- Federal grants
- $8.74M in 2025-26 · $109/resident
- Website
- portstephens.nsw.gov.au
Council boundaries and the suburb split: ABS ASGS LGA 2024, allocated by 2021 mesh block and weighted by Census 2021 residents. Population: ABS Estimated Resident Population 2025. Medians: ABS Census 2021. House median: ABS Data by Region, established-house transfers across the whole council, financial year 2023-24. Federal grants: Financial Assistance Grants, Dept of Infrastructure. ABS and Dept of Infrastructure data CC BY 4.0; council website from Wikidata (CC0).
Representation
- Federal division
- Lyne
- Federal MP
- Alison Penfold (NP)
- Two-party-preferred
- Coalition 60% 2PP
- State electorate
- Port Stephens
- State MP
- Kate Washington (ALP)
Similar suburbs
Closest demographic & amenity profile, nationally.
Sources: ABS ASGS boundaries (CC BY 4.0); ABS Census 2021 (CC BY 4.0); Australian Electoral Commission (CC BY 4.0); Geoscience Australia 1 Second DEM-S (CC BY 4.0); DEA Water Observations Statistics, Geoscience Australia (CC BY 4.0); NSW Environmental Planning Instrument — Flood, NSW Department of Planning (CC BY 4.0); NSW Bush Fire Prone Land, NSW Rural Fire Service (CC BY 4.0); NSW Environmental Planning Instrument — Land Zoning, NSW Department of Planning (CC BY); NSW Environmental Planning Instrument — Heritage, NSW Department of Planning (CC BY); Wikipedia state-member tables (CC BY-SA 4.0). Not financial advice.