Suburb profile
Hay Flat SA 5204
Hay Flat is located in the South East South Australia region of South Australia, postcode 5204. It has 48 properties across 10 streets, almost all houses. Explore every street in Hay Flat, its property history, homes for sale and rent, who lives there, and the local agents.
About Hay Flat
Hay Flat, SA 5204, sits in the South East South Australia region and neighbours Normanville, Parawa, Second Valley and Wirrina Cove. Its 10 streets hold 48 properties, all of them houses.
Census figures are for the Yankalilla area. At the 2021 Census it had 6,498 residents, a median age of 56 and an average household of 2.2 people. Median household income was $1,082 a week, the median mortgage repayment $1,300 a month and the median rent $270 a week. Of 2,704 dwellings, 2,528 were separate houses, 87 semi-detached, 51 flats and 40 other; 1,290 were owned outright, 867 owned with a mortgage and 415 rented.
Updated October 2026
Who lives in Hay Flat
- 6,498Peoplelive in the area
- 56Median ageyears
- $1,082Median household incomea week
- $270Median renta week
Homes by type
- Houses2,528
- Townhouses and semis87
- Flats and apartments51
- Other40
Household
- Median mortgage repayment$1,300a month
- Household size2.2people on average
How homes are held
Properties in Hay Flat
Streets in Hay Flat
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.