SA · Kangaroo Island Council
Seddon (SA), SA, 5223
Current weather
10.5°CLight drizzle
95% humidity · 25 km/h wind · 12.4° / 10.3° today · 17.7 mm rain
Suburb snapshot
Seddon (SA) is a small locality in the Kangaroo Island area, home to around 107 residents (2021 Census). Recent indicators show notable planning and development activity on record. Use the sections below for detailed population, safety, schools, and local activity data.
Population
- 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)
- 4 / 0 / 0
Data sources & freshness
- 2021 Census — General Community Profile — Australian Bureau of Statistics · Period: 2021 · Updated on site · 2021 Census release
The 2026 Census runs in August 2026; suburb-level updates are expected from mid-2027.
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
Data sources & freshness
- PlanSA development applications & EPA licences — Government of South Australia — PlanSA · Period: 2020–2026; 2021; 2022… · Updated on site
Amenities
No OpenStreetMap amenities mapped for this suburb yet.
Data sources & freshness
- OpenStreetMap amenities — OpenStreetMap contributors · Period: current · Updated on site · Weekly refresh
Socio-economic (SEIFA)
- IRSAD decile (2021)
- 6/10
- IRSD decile (2021)
- 7/10
SEIFA indexes from ABS 2021. Decile 10 = most advantaged / least disadvantaged in Australia.
Data sources & freshness
- SEIFA 2021 (IRSAD / IRSD) — Australian Bureau of Statistics · Period: 2021 · Updated on site · 2021 SEIFA release
Heritage
2 state heritage places
- Heritage placeState heritage
- Heritage placeState heritage
Data sources & freshness
- SA Heritage Places database — Department for Environment and Water (SA) · Period: current · Updated on site
Green cover
- Parks & woodland (OSM)
- 134
- Parks (OSM)
- 0
OpenStreetMap parks and natural woodland features mapped within the suburb boundary.
Data sources & freshness
- OpenStreetMap green cover features — OpenStreetMap contributors · Period: current · Updated on site · Weekly refresh
Recent changes
- Heritage placeheritageState heritage
- Heritage placeheritageState heritage
- 12.2m x 6.2m garage next to existing homestead.planning890 EAST WEST TWO HWY SEDDON SA 5223Lodged 16 Aug 2021 · Decision Made
- Agricultural building (hay storage)planningLOT 40 WEDGEWOOD RD SEDDON SA 5223Lodged 05 Nov 2023 · Decision Made
- Building a shed over existing sheep yardsplanning628 GREGORS RD SEDDON SA 5223Lodged 21 Aug 2021 · Decision Made
- Change of use from agricultural building to shopplanning452 HICKMANS RD SEDDON SA 5223Lodged 15 Jun 2021 · Under Assessment
- Construction of a domestic outbuildingplanning563B GREGORS RD SEDDON SA 5223Lodged 12 Aug 2021 · Decision Made
- Construction of a verandah attached to existing dwellingplanning584 ROWLAND HILL HWY SEDDON SA 5223Lodged 12 Oct 2021 · Decision Made
- Construction of an agricultural building (machinery shed)planning584 ROWLAND HILL HWY SEDDON SA 5223Lodged 27 Nov 2021 · Decision Made
- Construction of an agricultural building for machinery storage.planning868 ROWLAND HILL HWY SEDDON SA 5223Lodged 12 May 2022 · Decision Made
Data sources & freshness
- SA Heritage Places database — Department for Environment and Water (SA) · Updated on site
- PlanSA development applications & EPA licences — Government of South Australia — PlanSA · Updated on site
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