Thomas Plain Postcode

South Australia

Outer Regional Top 10% SEIFA Above SA income
5554
Postcode for Thomas Plain, SA
Phone area code: 08 · 126 km from Adelaide · Pop. 46
46
Population
44
Median Age
$2,374
Household Income/wk
$100
Median Rent/wk
9/10
SEIFA Advantage
78.5
Area (km²)

Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.

Where Thomas Plain ranks: household income is in the top 10% of SA suburbs; SEIFA decile 9 puts it in the top 20% of Australia for socio-economic advantage.

How Thomas Plain Compares

Thomas Plain vs the SA average and the national average (2021 Census, population-weighted).

MetricThomas PlainSA avgAU avg
Household income/wk $2,374 +SA $1,545 $1,836
Rent/wk $100 -SA $308 $390
Median age 44 45.0 45.0
SEIFA decile 9/10 +SA 5.0/10 6.0/10
Unemployment 0.0% -SA 6.0% 5.0%

Green pill = at least 10% above the SA average; red = at least 10% below; grey = within 10%. For unemployment, colour polarity is inverted: lower is better.

Thomas Plain is a locality 126 km from Adelaide in South Australia, classified as outer regional by the ABS. The postcode is 5554. It falls within the Barossa - Yorke - Mid North region. The local government area is Barunga West.

According to the 2021 Census, Thomas Plain has a population of 46 with a median age of 44. The median weekly household income is $2,374, above the SA average.

Housing in Thomas Plain includes a median weekly rent of $100, 17 total dwellings. Housing costs in the area sit below the SA average. Owner-occupied dwellings (owned or mortgaged) make up 66.7% of housing.

On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Thomas Plain scores in decile 9 out of 10, which is well above the national average.

Thomas Plain is part of the Yorke Peninsula statistical area in South Australia.

Thomas Plain Details

Postcode5554
StateSouth Australia (SA)
Phone Area Code08
Population (2021)46
Median Age44 years
Median Household Income (Census 2021)$2,374/week
Median Personal Income (Census 2021)$1,050/week
Median Weekly Rent (Census 2021)$100
Average Household Size2.8 persons
Area78.5 km²
Population Density1/km²
Total Dwellings17
Australian Citizens84.8%
Unemployment Rate0.0%
SEIFA IRSAD Decile9/10 (well above average)
Latitude-33.9453651
Longitude137.9245298
Distance from Adelaide126 km
Region (SA4)Barossa - Yorke - Mid North
Area (SA3)Yorke Peninsula
Local GovernmentBarunga West
Federal ElectorateGrey

Age Profile

0–14 (6.5%) 15–24 (26.1%) 25–44 (26.1%) 45–64 (39.1%) 65+ (13.0%)
Show counts
0–14 years3 (6.5%)
15–24 years12 (26.1%)
25–44 years12 (26.1%)
45–64 years18 (39.1%)
65+ years6 (13.0%)

Housing Tenure

Owned outright (66.7%) Mortgaged (0.0%) Rented (33.3%)

SEIFA Socio-economic Index

Index of Relative Socio-economic Advantage and Disadvantage (IRSAD), decile 9 of 10. Higher deciles indicate more advantage.

Health Conditions (2021 Census)

Arthritis5 (10.9%)
Asthma3 (6.5%)

Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.

Motor Vehicles per Dwelling

No vehicle0 (0.0%)
1 vehicle0 (0.0%)
2 vehicles3 (27.3%)
3+ vehicles8 (72.7%)

Suburbs Near Thomas Plain

Ninnes 9.6 km Paskeville 11.1 km Thomas Plains 11.8 km Kulpara 12.2 km Bute 12.5 km Thrington 13.1 km Willamulka 13.3 km Dowling 16.8 km Alford 16.8 km Melton 17.3 km Kainton 18.8 km South Hummocks 19.0 km

Same Postcode (5554)

Boors Plain Cunliffe Jericho Jerusalem Kadina Matta Flat New Town Thomas Plains Wallaroo Mines Willamulka

More Thomas Plain Data

Barunga West LGA 17 suburbs, 8 postcodes, 2,721 people Climate & Weather Closest station: Clare (64.6 km) NDIS Providers NDIS data for Barunga West LGA

Page last reviewed . Data sources: Australian Bureau of Statistics 2021 Census (CC BY 4.0), SEIFA 2021 IRSAD, ACARA school profiles 2025. How this data is sourced.