Undalya at a glance
Walk score
0
Very car dependent
Population
35
Median age 53
The brief
What to know about Undalya.
The postcode for Undalya is 5451 (SA).
Undalya (5451) sits in the Clare and Gilbert Valleys region of South Australia.
Undalya has roughly 35 residents, with a retiree-heavy demographic. Households are predominantly owner-occupied. Daily life is car-dependent: most residents drive to work, school and the shops.
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What it’s like to live here.
Undalya 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 5 government primary, 1 government secondary.
Who lives here
Demographics.
The 2021 Census put Undalya's population at 35, with a median age of 53. That sits as a retiree-heavy demographic. Households are predominantly owner-occupied (150% own, 0% rent), which shapes everything from school catchment stability to how often properties turn over. The household mix skews family-dominated (70% family households, 0% lone person), so amenity decisions tend to follow what families want: parks, schools, supermarkets.
Population
35
Median age
53
Family households
70%
Lone person
–
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)
$235/wk
Weekly rent (unit)
$250/wk
Owner occupied
150%
Renter occupied
–
At a deeper level
35
Median age: 53
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Getting around
Walkability.
0
0
35
Scores calculated from OpenStreetMap data (ODbL)
Walkability data as of May 2026· OpenStreetMap
Place
Location.
Amenities
Transport
Nearby suburbs
Education
Schools in Undalya.
Local schools for Undalya
View the catchment for each school to find out more.
Government School Catchment
Auburn Primary School
Saddleworth Primary School
Riverton Primary 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 Undalya.
- What is the Undalya postcode?
- Undalya is in the 5451 postcode, in SA, in the Clare and Gilbert Valleys Council region.
- Where is Undalya?
- Undalya is a regional suburb in SA, postcode 5451, in the Clare and Gilbert Valleys Council region.
- What is the average rent in Undalya?
- The median weekly rent for houses is $235, for units it's $250.
- What schools are in Undalya?
- There are 6 schools serving Undalya on this page, including Auburn Primary School, Saddleworth Primary School, Riverton Primary School.
- How walkable is Undalya?
- Undalya has a Walk Score of 0 out of 100, highly car-dependent. transit score 0, bike score 35.
- What suburbs are near Undalya?
- Undalya is close to Auburn, Woolshed Flat, Rhynie, Saddleworth, Navan.
- What is the population of Undalya?
- The population of Undalya is approximately 35 (2021 Census). The median age is 53.
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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 →
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