Koppio vs Yallunda Flat
Yallunda Flat is the younger of the two, with a median age of 36 against 53 in Koppio. In both, the large majority of households own their home, the large majority of homes are detached houses, and most households are couple families. On these figures, Koppio tends to suit people living alone and older residents, while Yallunda Flat suits families with children and couples.
Which one suits you?
There is no overall winner — the suburb that suits a family with school-age kids is routinely the wrong one for someone commuting into the city. So each of these answers its own question, against a checklist you can see, using the same figures in the tables below.
Families with school-age kids
Yallunda Flat
ahead on 2 of the 6 things we measure here
- has more parks and reserves (8 vs 5)
- is already more of a family suburb (81% vs 59%)
- But Koppio carries lower crime risk (40/100 vs 68/100)
Weighs schools, house stock, crime, parks, childcare, and who already lives there.
First-home buyers
Yallunda Flat
ahead on the one thing that separates them
- leaves households under less mortgage stress (9% vs 33%)
Weighs mortgage stress.
Renters
Yallunda Flat
ahead on 2 of the 2 things we measure here
- leaves renters under less rental stress (8% vs 21%)
- has cheaper rent ($125/wk vs $250/wk)
Weighs rent and rental stress.
Commuting to the city
Yallunda Flat
ahead on 2 of the 3 things we measure here
- has a shorter drive in (408 min vs 414 min)
- sits closer to the CBD (625.2 km vs 629.1 km)
Weighs distance, drive time, and walkability.
Downsizers and retirees
Koppio
ahead on 2 of the 4 things we measure here
- has more residents already 65 and over (23% vs 10%)
- carries lower crime risk (40/100 vs 68/100)
Weighs who already lives there, GPs, walkability, and crime.
Investors
Yallunda Flat
ahead on the one thing that separates them
- is growing faster (20.0% vs -3.2%)
Weighs population growth.
Where they sit
Koppio and Yallunda Flat drawn to the same scale. Both outlines are shown together, so the map answers whether they share a border and how their areas compare.
Bars start at zero. Scores, risks and rankings are drawn against their full 0–100 range; other rows are drawn in proportion to the larger of the two.
Side by side, out of 100
Risks are inverted — shown as safety and low exposure — so a longer bar always means better.
Demographics
Koppio rents higher ($250/wk vs $125/wk); Yallunda Flat has more residents (120 vs 61).
| Koppio | Yallunda Flat | |
|---|---|---|
| Population | 61 | 120 +97% vs other |
| Population trend (2016 → 2021) | -3.2% | +20.0% |
| Median age | 53 | 36 |
| Median household income | $61,724/yr | $85,748/yr +39% vs other |
| Median weekly rent | $250/wk +50% vs other | $125/wk |
Age profile
Share of residents in each band, 2021 Census.
Bars are drawn against the largest share shown (19.2%).
Who lives together
Household composition, 2021 Census.
Who owns and who rents
Occupied private dwellings by tenure, 2021 Census.
What people live in
Occupied private dwellings by structure, 2021 Census.
Qualifications
Highest non-school qualification, residents 15+, 2021 Census.
Bars are drawn against the largest share shown (13.1%).
Zoning mix
| Koppio | Yallunda Flat | |
|---|---|---|
| Rural and farming | 99% | 100% |
| Zoning sets what may be built, not what is there today. A single address can sit in a different zone to the suburb around it. Zones as at 2026-09. | ||
Development activity
| Koppio | Yallunda Flat | |
|---|---|---|
| New dwellings approved | 13 across Tumby Bay same for both | |
| Approvals change year on year | -50% same for both | |
Ranking within SA
| Koppio | Yallunda Flat | |
|---|---|---|
| House price | — same for both | |
| Income | Higher than 29% of SA | Higher than 63% of SA |
| Schools | — same for both | |
| Walkability | Higher than 33% of SA | Higher than 1% of SA |
| Affordability | — same for both | |
| EV adoption | Higher than 3% of SA | Higher than 1% of SA |
| NBN connectivity | Higher than 27% of SA | Higher than 31% of SA |
Liveability
| Koppio | Yallunda Flat | |
|---|---|---|
| Grade | — same for both | |
| Score | — same for both | |
| Socio-economic band | mid-range socio-economic decile 5/10 same for both | |
Risk profile
Yallunda Flat carries more crime risk (68 vs 40).
| Koppio | Yallunda Flat | |
|---|---|---|
| Bushfire | High 75/100 | High 71/100 |
| Crime | Moderate 40/100 | Moderate 68/100 |
| Flood | — same for both | |
| Coastal erosion | None 0/100 same for both | |
| Aircraft noise | None 0/100 same for both | |
| Industrial facilities nearby | 0 within 5 km same for both | |
Schools
| Koppio | Yallunda Flat | |
|---|---|---|
| Inside the suburb | 0 same for both | |
| Rated above peers | 0 same for both | |
| Rated at peers | 0 same for both | |
| Rated below peers | 0 same for both | |
Amenities in the suburb
| Koppio | Yallunda Flat | |
|---|---|---|
| Parks & reserves | 5 | 8 |
| Waterways | 1 | 0 |
Mobility
Koppio sits further from the CBD (629.1 km vs 625.2 km).
| Koppio | Yallunda Flat | |
|---|---|---|
| Walkability score | 0/100 same for both | |
| Distance to Adelaide | 629.1 km | 625.2 km |
| Drive time (normal traffic) | 414 min | 408 min |
| Electric vehicle share | 0.1% postcode 5607 same for both | |
| Rooftop solar per 100 dwellings | 59 postcode 5607 same for both | |
How people get to work
Method of travel on census day 2021 — which fell during COVID restrictions, so working from home is inflated and every travel mode understated.
Bars are drawn against the largest share shown (64.3%).
Setting
| Koppio | Yallunda Flat | |
|---|---|---|
| Elevation | 160 m above sea level, at the suburb centre | 212 m above sea level, at the suburb centre |
| Distance to the ocean | 13.2 km | 20.4 km |
NBN connectivity
| Koppio | Yallunda Flat | |
|---|---|---|
| Connectivity score | 16/100 | 21/100 |
| Most common technology | Satellite (Sky Muster) same for both | |
| Full-fibre (FTTP) share | 0% 11 premises | 0% 32 premises |
Council rates
| Koppio | Yallunda Flat | |
|---|---|---|
| Average residential rate | $1,976/yr same for both | |
| Council | Tumby Bay same for both | |
Federal electorate
| Koppio | Yallunda Flat | |
|---|---|---|
| Division | Grey same for both | |
| Member | Tom Venning same for both | |
| Party | Liberal same for both | |
First Home Owner Grant
| Koppio | Yallunda Flat | |
|---|---|---|
| Grant amount | $15,000 same for both | |
| Property price cap | — same for both | |
| Eligibility | New same for both | |
Tags
More comparisons
Other comparisons with Koppio
Other comparisons with Yallunda Flat
Information shown is provided as-is from Australian government and commercial data sources.
Always verify with the relevant authority before making property decisions.
See Data Sources and How We Calculate for details.