Median house price
—
No data available
SA · Kangaroo Island Council
Seddon, 5223
Est. population · Jun 2025
115
Growth (1 yr)
+0.9%
Growth (5 yr)
+5.5%
Median age
37
Median income
$1,708/wk
Employment rate
74.1%
Languages at home
4%non-English
Mostly English at home
2021 Census · usual residence
- Green suburb
- Heritage area
Suburb profile
In Kangaroo Island Council, Seddon keeps a rural calm, a smaller community with room to breathe and a strong local rhythm. Far from Adelaide, it rewards people who want real remove from the city rather than a long-commute suburb. Residents are mostly families and working professionals, with a strong presence of young families throughout.
Everyday basics may be close by, but bigger shopping and services typically require a trip to a nearby centre. Parks and open space are a real strength relative to many comparable suburbs, easy for walks, sport and weekend downtime. Day-to-day life is more car-oriented here than in denser, more walkable pockets.
Property prices are middling for the area: fair relative to what is nearby. Steady development is bringing new homes and gradual renewal to parts of the suburb.
At a glance
Seddon snapshot
A quick read of housing, growth, livability, and risk
Median rent
—
No data available
Population (ERP)
115
+0.9% annual growth
Dwelling vacancy
46.2%
Census unoccupied dwellings
How it compares
Relative standing using percentiles, ranks, and national deciles
Pop. growth
69th
percentile in SA
Advantage (IRSAD)
6/10
national SEIFA decile
Population growth
Recent ERP change over 1 and 5 years
Housing mix
Dwelling types from the 2021 Census
Risks & flags
Quick scan — open a section below for full context
Living here
Population
Estimated resident population
115(June 2025)
+0.9% annual · +5.5% over 5 years · 69th percentile in SA
Growth figures & methodology
- Annual growth
- +0.9%
- 5-year growth
- +5.5%
- Change in 1 year
- +1
- Change in 5 years
- +6
- Growth rank in SA
- 69th percentile
ABS Estimated Resident Population allocated to this suburb from SA2-level data. Not an official ABS suburb count.
Methodology
Figures are allocated from ABS Estimated Resident Population at Statistical Area Level 2 (SA2), using 2021 Census share within overlapping SA2 regions. Where Census data is unavailable, area overlap is used instead.
The dashed chart line is a simple growth-trend estimate to June 2030 (~100), extrapolated at +1.0% average annual growth since 2011. It is illustrative only — not an official ABS forecast.
2021 Census figures
2021 Census
- Population
- 107
- Median age
- 37
- Median household income / week
- $1,708
- Dwelling vacancy
- 46.2%
- Unoccupied private dwellings
- 30 of 65
- Median monthly mortgage
- $663
- Employment rate
- 74.1%
- Dwelling mix (houses / semi / flats)
- 32 / 0 / 0
Contributes to desirability score · Community (5%)
Employment, household income and age diversity (2021 Census)
Data sources & freshness
- 2021 Census — General Community Profile — Australian Bureau of Statistics · Updated
The 2026 Census runs in August 2026; suburb-level updates are expected from mid-2027.
- Estimated Resident Population — Australian Bureau of Statistics · 2025 · Updated · SA2 ERP allocated to suburb boundaries
Community & culture
No 2021 Census cultural diversity data for this suburb yet.
Data sources & freshness
- 2021 Census — General Community Profile — Australian Bureau of Statistics · Updated
The 2026 Census runs in August 2026; suburb-level updates are expected from mid-2027.
Family & Lifestyle
Amenities
1 nearby amenities within ~1.5 km
Local character & venue list
Local character
- Limited walkable amenities nearby
- Walkability proxy
- 0/100
- Cafés per 1,000 residents
- 0
- Food & drink per 1,000 residents
- 0
- Parks per 1,000 residents
- 0
Other(1)
- Eleanor River HomesteadGuest House
563a Gregors Road, Seddon
Names and addresses from OpenStreetMap. Unnamed venues show as their type (e.g. Cafe). Transport stops are summarised by type rather than listed individually.
Contributes to desirability score · Lifestyle (15%)
Food, shopping, recreation and sport (OpenStreetMap)
Data sources & freshness
- Local amenity insights — Suburb Guide (derived) · current · Updated
- OpenStreetMap amenities — OpenStreetMap contributors · current · Updated
Green cover
- Parks & woodland (OSM)
- 137
- Parks (OSM)
- 0
OpenStreetMap parks and natural woodland features mapped within the suburb boundary.
Contributes to desirability score · Environment (10%)
Parks and green cover (OpenStreetMap)
Data sources & freshness
- OpenStreetMap green cover — OpenStreetMap contributors · current · Updated
Health access
- Nearest hospital
- Kangaroo Island Health Service (39.9 km)
- Nearest hospital type
- Public Hospital
- Nearest hospital emergency
- Emergency department
Contributes to desirability score · Accessibility (15%)
Hospitals and GP clinics
Data sources & freshness
- Hospitals & GP Plus clinics (SA) — SA Health · current · Updated
NDIS participation
- NDIS participants (31 March 2026)
- 3
- Participants per 1,000 residents
- 26.1
Active NDIS participants allocated from NDIA Statistical Area Level 2 (SA2, ASGS 2016) counts to this suburb boundary. Not an official suburb-level NDIS figure · as at 31 March 2026.
For NDIS spend and service-demand exploration by SA2 or postcode, see the Care Sector Demand Map.
Data sources & freshness
- NDIS participants by SA2 — National Disability Insurance Agency · 2026-Q1 · Updated · Quarterly SA2 counts allocated to suburb boundaries
Weather
Typical conditions by season for suburbs in the same ~44 km climate area. Rainfall totals are summed from monthly WorldClim layers; rainy-day counts are approximate.
Summer (Dec–Feb)
- Usual max / min
- 24° / 14°
- Rainfall
- 55 mm · ~7 rainy days
Autumn (Mar–May)
- Usual max / min
- 20° / 12°
- Rainfall
- 144 mm · ~18 rainy days
Winter (Jun–Aug)
- Usual max / min
- 15° / 9°
- Rainfall
- 278 mm · ~35 rainy days
Spring (Sep–Nov)
- Usual max / min
- 19° / 10°
- Rainfall
- 131 mm · ~16 rainy days
Contributes to desirability score · Lifestyle (15%)
Temperature and humidity comfort
Data sources & freshness
- Seasonal climate normals — WorldClim 2.1 · Updated
Future & Planning
Planning & development
Development applications from PlanSA register (lodged 2020–2026) and EPA licensed activities.
22 planning-related records
2025· 2 proposals
October 2025
- Torrens Title Land Division - 1 Allotment into 2LOT 14 EAST WEST TWO HWY SEDDON SA 5223Decision Made
May 2025
- Torrens Title land division to create 60 residential allotments (1 allotment into 60) including 4 reserve allotments and construction of new roads and service infrastructure - Stage DevelopmentLOT 300 WEDGEWOOD RD SEDDON SA 5223Under Assessment
2024· 2 proposals
April 2024
- Construction of dwelling additions59 WEDGEWOOD RD SEDDON SA 5223Decision Made
February 2024
- Realignment of a boundary between Lot 95 Crabbs Road and Lot 110 Crabbs Road1137 CRABBS RD SEDDON SA 5223;4000 SOUTH COAST RD NEWLAND SA 5223Decision Made
2023· 2 proposals
November 2023
- Agricultural building (hay storage)LOT 40 WEDGEWOOD RD SEDDON SA 5223Decision Made
April 2023
- Single storey detached dwelling, two (2), 46KL rainwater tanks, associated outbuilding/implement shed and ground mounted solar panels (retrospective)LOT 208 WEDGEWOOD RD SEDDON SA 5223Under Assessment
2022· 6 proposals
December 2022
- Construction of tourism accommodation ancillary to existing dwelling192 WEDGEWOOD RD SEDDON SA 5223Decision Made
November 2022
- Variation to DA 21004388 for alterations and additions to existing dwelling - changes include internal building work to alter existing kitchen, change to roof line, new verandah, decks and alfresco area and roof over existing portico.218 HICKMANS RD SEDDON SA 5223Decision Made
June 2022
- Construction of an outbuilding (garage)469 GREGORS RD SEDDON SA 5223Decision Made
May 2022
- Construction of an agricultural building for machinery storage.868 ROWLAND HILL HWY SEDDON SA 5223Decision Made
March 2022
- Telecommunications Facility - comprising a slim line lattice tower supported by 3 anchored guy wires, 2.3 metre high security fenced compound and 2x equipment cabinets, ground-mounted solar array and protective barriers930 HICKMANS RD SEDDON SA 5223Decision Made
- Telecommunications Facility - comprising a slim line lattice tower supported by 3 anchored guy wires, 2.3 metre high security fenced compound and 2x equipment cabinets, ground-mounted solar array and protective barriersLOT 202 WEDGEWOOD RD SEDDON SA 5223Decision Made
2021· 10 proposals
November 2021
- Construction of an agricultural building (machinery shed)584 ROWLAND HILL HWY SEDDON SA 5223Decision Made
October 2021
- Construction of a verandah attached to existing dwelling584 ROWLAND HILL HWY SEDDON SA 5223Decision Made
August 2021
- Building a shed over existing sheep yards628 GREGORS RD SEDDON SA 5223Decision Made
- 12.2m x 6.2m garage next to existing homestead.890 EAST WEST TWO HWY SEDDON SA 5223Decision Made
- Construction of a domestic outbuilding563B GREGORS RD SEDDON SA 5223Decision Made
- Dwelling563D GREGORS RD SEDDON SA 5223Decision Made
July 2021
- Extend a current dam from 3ML to 16.6ML dam for water security. Build a graded catchment on an existing dam.836 EAST WEST ONE HWY SEDDON SA 5223Decision Made
June 2021
- Single storey dwelling addition and alterations218 HICKMANS RD SEDDON SA 5223Decision Made
- Change of use from agricultural building to shop452 HICKMANS RD SEDDON SA 5223Under Assessment
May 2021
- Dwelling743 WEDGEWOOD RD SEDDON SA 5223Decision Made
Contributes to desirability score · Future Growth (7%)
Development and planning activity
Data sources & freshness
- PlanSA development applications & EPA licences — Government of South Australia — PlanSA · 2020–2026 · Updated
Heritage
2 heritage places
- KaiwarraSouth Coast Road SEDDONLocal heritage
- Monument - remnant floor slab and timber gantryTimber Creek Road Sir Cecil Hincks Memorial Reserve SEDDONLocal heritage
Data sources & freshness
- SA Heritage Places database — Department for Environment and Water (SA) · current · Updated
Hazards
- Bushfire planning zone
- Overlay applies
Bushfire overlay checked at suburb centroid against all current SA Planning risk layers (high, medium, general, urban interface, regional, outback). Safer places from CFS designated locations.
Contributes to desirability score · Safety (18%)
Bushfire hazard overlays
Data sources & freshness
- Bushfire & hazard overlays (SA) — Government of South Australia · current · Updated
Politics & representation
- Federal electorate
- Mayo
- Member of Parliament
- Rebekha SHARKIE (Centre Alliance)
- Results from
- 2025 federal election
- Electorate enrolment (2025)
- 137,818
- Turnout (2025)
- 94.2%
- Swing since 2022 (2025)
- +3.4 pp toward Labor
Two-party preferred (2025)
Coalition 45.0%Labor 55.0%
Estimated suburb voting profile
Estimated from 8 nearby ordinary polling places (up to 106.1 km away).
Coalition 75.9%Labor 24.1%
30.8 percentage points more Coalition-leaning than the electorate
Estimated swing since 2022: -9.8 pp toward Coalition
Nearest polling places
- ParndanaLabor 21.6% · Coalition 78.4% TPP (2025)8.2 km away
- KingscoteLabor 44.9% · Coalition 55.1% TPP (2025)40.3 km away
- Special Hospital Team 5Labor 25.0% · Coalition 75.0% TPP (2025)40.6 km away
- American RiverLabor 42.5% · Coalition 57.5% TPP (2025)47.0 km away
- PenneshawLabor 50.6% · Coalition 49.4% TPP (2025)61.6 km away
Federal electorate from AEC federal division boundaries (2025 redistribution). Division-level results are official AEC figures from the latest general election, with by-election updates where applicable. The estimated suburb profile blends up to eight nearest ordinary polling booths in the same electorate using inverse-distance weighting from the suburb centroid — an approximation, not official AEC data. Nearest polling places are shown for reference.
Data sources & freshness
- Federal election results — Australian Electoral Commission · Updated · 2025 election with by-election overlays
Socio-economic
- IRSAD decile (2021)
- 6/10
- IRSD decile (2021)
- 7/10
ABS Socio-Economic Indexes for Areas (SEIFA), 2021 release — the latest available, derived from the 2021 Census. Deciles rank suburbs nationally from 1 (lowest) to 10 (highest).
What do IRSAD and IRSD measure?
IRSAD — Index of Relative Socio-economic Advantage and Disadvantage. Combines indicators of advantage (e.g. high income, skilled occupations) and disadvantage. Higher decile = more advantaged relative to other Australian areas.
IRSD — Index of Relative Socio-economic Disadvantage. Focuses on disadvantage only (e.g. low income, unemployment, limited education). Higher decile = less disadvantage nationally.
A new SEIFA edition typically follows each census; the ABS has not announced a release date beyond 2021.
Contributes to desirability score · Community (5%)
Socio-economic advantage (IRSAD decile)
Data sources & freshness
- SEIFA 2021 (IRSAD / IRSD) — Australian Bureau of Statistics · Updated
More in Kangaroo Island Council
Other suburbs in the same local government area.
Comparable suburbs
Similar population and socio-economic profile in other parts of South Australia.