Tarnma at a glance
Walk score
0
Very car dependent
Population
20
Median age 74
The brief
What to know about Tarnma.
The postcode for Tarnma is 5413 (SA).
Tarnma (5413) sits in the Goyder region of South Australia.
Tarnma has roughly 20 residents, with a retiree-heavy demographic. Households are a roughly even mix of owners and renters. Daily life is car-dependent: most residents drive to work, school and the shops.
Day to day
What it’s like to live here.
Tarnma scores 0/100 on walkability, which makes it car-dependent with limited public transport. Plan for two cars in a typical household, especially if work isn't local.
Summer days here average around 28°C (warm), winter mornings around 7°C (cool). Annual rainfall lands at about 448mm. Data comes from the Bureau of Meteorology's Adelaide (Kent Town) station, 11.1km away.
Schooling within or near the suburb covers 4 government primary, 2 government secondary, 1 independent.
Who lives here
Demographics.
The 2021 Census put Tarnma's population at 20, with a median age of 74. That sits as a retiree-heavy demographic. Households are a roughly even mix of owners and renters (50% own, 0% rent), which shapes everything from school catchment stability to how often properties turn over. The household mix skews family-dominated (67% family households, 50% lone person), so amenity decisions tend to follow what families want: parks, schools, supermarkets.
Population
20
Median age
74
Family households
67%
Lone person
50%
Demographics data as of May 2026· ABS 2021 Census
Market
The price of a home here.
Median house price
Verified median pending
We don't yet have a verified suburb-level median for this market. We're working on a data partner; in the meantime, treat the state-level figures as a guide only. How we source data.
Rental and ownership
Weekly rent (house)
$200/wk
Weekly rent (unit)
$206/wk
Owner occupied
50%
Renter occupied
–
At a deeper level
20
Median age: 74
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Getting around
Walkability.
0
0
0
Scores calculated from OpenStreetMap data (ODbL)
Walkability data as of May 2026· OpenStreetMap
Place
Location.
Amenities
Transport
Education
Schools in Tarnma.
Local schools for Tarnma
View the catchment for each school to find out more.
Government School Catchment
Eudunda Area School
Saddleworth Primary School
Riverton and District High School
© ACARA, licensed under CC BY 4.0.
Climate
Weather year-round.
Annual Rainfall
448 mm
Hottest Month (avg max)
28.0°C
Coldest Month (avg min)
7.0°C
Monthly Rainfall (mm)
Weather data from BOM station Adelaide (Kent Town) (11 km away)
Climate data as of May 2026· Bureau of Meteorology
Frequently asked
About Tarnma.
- What is the Tarnma postcode?
- Tarnma is in the 5413 postcode, in SA, in the Goyder region.
- Where is Tarnma?
- Tarnma is a regional suburb in SA, postcode 5413, in the Goyder region.
- What is the average rent in Tarnma?
- The median weekly rent for houses is $200, for units it's $206.
- What schools are in Tarnma?
- There are 8 schools serving Tarnma on this page, including St John's Lutheran School, Eudunda Area School, Saddleworth Primary School.
- How walkable is Tarnma?
- Tarnma has a Walk Score of 0 out of 100, highly car-dependent. transit score 0, bike score 0.
- What suburbs are near Tarnma?
- Tarnma is close to Marrabel, Julia, Buchanan, Hampden, Tothill Creek.
- What is the population of Tarnma?
- The population of Tarnma is approximately 20 (2021 Census). The median age is 74.
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Sources cited
Median, growth and rental data from state revenue offices and ABS. Census from ABS 2021. Climate from BoM. Hazard from Geoscience Australia. School data from ACARA. Crime from state police open data. Full methodology →
Always dated
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