Suburb profile
Seddon SA 5223
Seddon is located in the South East South Australia region of South Australia, postcode 5223. It has 81 properties across 13 streets, almost all houses. Explore every street in Seddon, its property history, homes for sale and rent, who lives there, and the local agents.
About Seddon
Seddon, SA 5223, sits in the South East South Australia region and neighbours Cassini, Duncan, Macgillivray and Newland. Its 13 streets hold 81 properties, all of them houses.
Census figures are for Kangaroo Island, which covers the whole suburb. The area had 4,894 residents, a median age of 50 and an average household of 2.2 people. Median household income was $1,128 a week, the median mortgage repayment $1,023 a month and the median rent $208 a week. Of 1,940 dwellings, 1,840 were separate houses, 49 semi-detached, 24 flats and 13 other; 844 were owned outright, 536 owned with a mortgage and 430 rented.
Updated October 2026
Who lives in Seddon
- 4,894Peoplelive in the area
- 50Median ageyears
- $1,128Median household incomea week
- $208Median renta week
Homes by type
- Houses1,840
- Townhouses and semis49
- Flats and apartments24
- Other13
Household
- Median mortgage repayment$1,023a month
- Household size2.2people on average
How homes are held
Streets in Seddon
- Crabbs Road6 properties
- East West One Highway7 properties
- East West Two Highway4 properties
- Gregors Road11 properties
- Hickmans Road10 properties
- Playford Highway6 properties
- Research Centre Road13 properties
- Rowland Hill Highway5 properties
- Schaefer Road2 properties
- Seagers Road1 property
- South Coast Road6 properties
- Timber Creek Road2 properties
- Wedgewood Road8 properties
Neighbouring suburbs
Addresses and streets incorporate or were developed using G-NAF © Geoscape Australia, licensed by the Commonwealth of Australia under the Open Geo-coded National Address File (G-NAF) End User Licence Agreement.
Population and housing figures are drawn from the Australian Bureau of Statistics, Census of Population and Housing 2021, licensed under Creative Commons Attribution 4.0 International.
Area summaries are generated from the national address file and ABS Census data, and checked against those figures before publication.