Millbrook SA 5231
Millbrook sits 27 km from Adelaide CBD in South Australia, around 37 minutes by car. Census data records 133 residents with a median age of 50 and a median household income of $53,612 per year. On socioeconomic measures it sits in the top 20% nationally. Population grew 25.5% from 2016 to 2021. The 2021 Census recorded a median rent of $250 per week and a median monthly mortgage of $2,492. The area shows high bushfire risk. Walkability is low.
This locality is too small to rate.
The Liveability Rating is calculated for suburbs of 500 residents or more, and this one has 133. Below that the school, census and safety figures behind the score cover too few people to rank fairly against the rest of the state. The individual measures further down this page are still shown.
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Is Millbrook safe? Crime statistics
2026Crime in Millbrook sits in the low band, with 1 incidents recorded in 2026 — down roughly 50% on the prior year.
1 offences
50.0% since 2025Crime Trend
Serious Road Crashes
2021–202514 crashes
where someone was killed or admitted to hospital, 2 of them fatal
Crashes are counted where they happened, so a main road through the locality carries people passing through; this is not a measure of risk to residents. This state’s crash data does not name the road.
Schools
Walkability
Millbrook is very car-dependent on foot — at 0/100, nearly all errands require a car.
We hold no public transport timetable data for this area, so public transport is not rated here and the score is spread across the remaining components. It is not counted as zero.
NBN connectivity
The internet access technology available across NBN premises in Millbrook.
- Full-fibre (FTTP) share
- 0%
- Premises covered
- 37
NBN Co fixed-line and fixed-wireless premises, as at 30 December 2025. Higher-quality technologies (full fibre) score above copper, wireless, and satellite. Actual speeds depend on your plan.
Amenities
Adelaide Hills: council population
The three add up to the change above. These are council-wide figures from the ABS, not figures for this locality alone — this locality's own population is in the census section above.
Socio-economic profile
Millbrook is home to 133 residents, with a median age of 50 — noticeably older than the national figure of 38. Median household income runs at $54,000 a year, with unemployment at 4.5%.
2021 Census · change since 2016
Population
133
Median Age
50
Median Household Income
$53,612/yr
Census Median Rent
$250/wk
Census Median Mortgage
$2,492/mo
Avg Household Size
2.3
Median Personal Income
$34,684/yr
Unemployment Rate
4.5%
Unoccupied Dwellings
12.0%
Total Dwellings
50
Owner-Occupier Rate
83.3%
Houses
60.0%
Rental Stress
24.2%
Mortgage Stress
55.8%
Work From Home
12.8%
Dwelling Types
Property Ownership
Demographics
- Born in Australia
- 69.2%
- English Spoken at Home
- 85.0%
- Employment Rate
- 53.8%
- Completed Year 12
- 42.1%
Occupations
Religion
Country of Birth (overseas)
Largest overseas birthplaces, as a share of all residents.
Age Distribution
Family & Household Composition
Commute to Work
Education
Cars per Dwelling
Council Rates
Households face an average residential rates bill of $2,727 a year through Adelaide Hills based on 2024 figures.
How this land is zoned
- Rural and farming 100%
Zoning sets what may be built, not what is there today. A single address can sit in a different zone to the locality around it — the property page shows the zone for one address.
Building Approvals: Adelaide Hills
In the year to August 2026, 95 new dwellings were approved across Adelaide Hills. Almost all of the pipeline is detached houses. Approvals are up 53.3% on the same period a year earlier.
Air Quality
MODERATEPM2.5 averaged 5.5 µg/m³ in 2025 — below Australia's NEPM annual standard (8 µg/m³), slightly above the stricter WHO guideline (5 µg/m³). 1 day exceeded the daily threshold of 25 µg/m³.
PM10 averaged 18.7 µg/m³ · NO₂ averaged 0.31 pphm. Days over the limit in 2025: PM10 5 · NO₂ 0 · ozone 0.
From the Elizabeth monitoring station, 17.4 km away.
Climate & Setting
from Lenswood, 13.8 kmHigh rainfall.
- Elevation
- 316 m
- above sea level, at the locality centre
- Distance to the ocean
- 23.0 km
- Annual rainfall
- 921 mm
- 87 rainy days
- Summer max (Jan)
- —
- Winter min (Jul)
- —
Elevation is the ground at the locality centre, from Geoscience Australia's National Digital Elevation Model. Approximate — it reads high in dense built-up areas. It is a measure of height above sea level and not an indicator of flood risk, which depends on height above nearby waterways.
Industrial Emissions Nearby
1 facility within 5 km- 4.5 kmWine and Other Alcoholic Beverage ManufacturingTop reported: Ethanol · Total Volatile Organic Compounds
EV adoption
In postcode 5231, 10 of 1,185 registered light vehicles are battery-electric on 31 January 2025. A further 1.9% (22 vehicles) are hybrid or plug-in hybrid, taking the non-petrol, non-diesel share to 2.7%.
Rooftop solar
In postcode 5231, 401 rooftop-solar systems totalling 3.0 MW have been installed since 2001, against 491 dwellings recorded in the 2021 Census. 29 went up in the last year.
Counts every system certified since 2001, so a roof re-fitted with a newer system is counted twice, and small commercial systems are included alongside houses — useful for comparing postcodes, not an estimate of how many homes have working panels today.
2026 covers part of the year only, to 2026-07.
First Home Owner Grant
FY2026-27$15,000 for new homes.
No purchase-price cap. Stamp duty is fully exempted for eligible first-home buyers as a separate concession.
Federal Electorate
Currently held by Rebekha Sharkie Centre Alliance
| Year | Winner | 2PP ALP | 2PP LNP | Swing |
|---|---|---|---|---|
| 2025 | Rebekha Sharkie | 55.0% | 45.0% | +3.4 |
| 2022 | Rebekha Sharkie | 51.6% | 48.4% | -4.1 |
| 2019 | Rebekha Sharkie | 47.5% | 52.5% | -0.7 |
Results are per division — federal electoral boundaries are redrawn periodically, so the history reflects this division's past, not necessarily the exact locality's voters across time.
State Electorate
Currently held by Ashton Hurn Liberal Party
Next state election: 16 March 2030.
| Year | Winner | Won with |
|---|---|---|
| 2026 | Ashton Hurn LP | 67.4% |
| 2022 | Ashton Hurn LP | 61.9% |
Results are per district. Districts were last redrawn in 2024, so results from before then describe the district of that name, not necessarily this locality's voters. Results: Electoral Commission of South Australia.
Looking at a specific address in Millbrook?
Every figure above is a locality average, and an average smooths over the difference between a street of family homes and a block of flats. Look up one address and you get the census for the few hundred people around it, its own nearest schools and stops, and what the state has mapped for that block.
- The census for a few hundred neighbours, not all 133 residents
- Nearest and zoned schools, with the walk from that door
- Flood, bushfire and noise mapping, where the state publishes it
Free to look up. Subscribers see every section in full — $29/month.
Checking the whole city?
Suburbs to avoid in Adelaide There is no list of bad suburbs, but there are hazards the state measures and publishes — recorded crime, bushfire exposure, flood overlays and aircraft noise. Adelaide suburbs ranked on them, with what the numbers do and don't mean.Nearby suburbs
Compare Millbrook to another suburb
Side-by-side stats for any other SA suburb — type a name and pick one.
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Common questions about Millbrook
Is Millbrook a safe place to live?
Recorded crime in Millbrook is low (13/100, ranked against other SA suburbs on offences per resident).
What natural hazards affect Millbrook?
Millbrook has a high recorded bushfire history (86/100, ranked against every Australian suburb with any fire history). Flood overlays cover a low share of it (25/100). These are locality-wide figures; check the address, as flood and bushfire exposure change street by street.
What is the population of Millbrook?
Millbrook, SA had a population of 133 at the 2021 Australian Bureau of Statistics census.
What is the postcode for Millbrook, SA?
The postcode for Millbrook, SA is 5231.
How far is Millbrook from Adelaide?
Millbrook is 27 km from Adelaide CBD by road, about 37 minutes by car in normal traffic. Distance is the most-direct driving route, not straight-line.
What is the median household income in Millbrook?
At the 2021 ABS Census, median household income in Millbrook was $53,612 a year. It is the most recent suburb-level income figure until 2026 Census results are released in 2027.
What is the median weekly rent in Millbrook?
There are too few current rental listings in Millbrook for a reliable median. At the 2021 ABS Census the median weekly rent was $250, across all dwelling types.
What is the median age in Millbrook?
The median age of residents in Millbrook was 50 at the 2021 ABS Census.
Is Millbrook at risk of bushfire?
Millbrook has a high recorded bushfire history (86/100). The score comes from Geoscience Australia's historical bushfire boundaries, with planned burns excluded: the area of recorded fires touching the locality relative to its size, ranked against every Australian suburb with any fire history. It records where fire has burned, not a bushfire-prone land designation, which your council's planning scheme sets.
What is the air quality in Millbrook?
The nearest government air-quality monitoring station to Millbrook (Elizabeth) recorded a 2025 annual mean PM2.5 of 5.5 µg/m³ and PM10 of 18.7 µg/m³. That puts Millbrook below the Australian NEPM annual standard of 8 µg/m³ but above the stricter WHO guideline of 5 µg/m³.
What is the weather like in Millbrook?
At the nearest Bureau of Meteorology station to Millbrook, Lenswood (13.8 km away), 921 mm of rain a year over 87 rainy days over 2006-2026.
Is the First Home Owner Grant available in Millbrook?
First-home buyers in SA may be eligible for $15,000 towards new homes. The grant is administered by RevenueSA; confirm current eligibility before signing a contract — state rules and amounts can change.
What council does Millbrook belong to?
Millbrook sits within the Adelaide Hills local government area. Council rates, planning approvals, and waste collection fall under this LGA.
How much are council rates in Millbrook?
The average residential rates bill through Adelaide Hills is $2,727 a year (2024). Every suburb in this LGA shares the same schedule — individual bills vary with land value.
How much is being built near Millbrook?
Across Adelaide Hills, 95 new residential dwellings were approved in the year to August 2026 (source: ABS Building Approvals). That's up 53.3% on the same period a year earlier. These are LGA-level totals — every suburb in the council shares the same figure.
Which federal electorate is Millbrook in?
Millbrook sits within the federal Division of Mayo, currently held by Rebekha Sharkie (Centre Alliance).
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Data freshness
- Census · 2021
- For-sale & rental market · Oct 2026
- Council rates · FY 2024–25
- Building approvals · Aug 2026
- Schools · 2025
- NBN connectivity · Dec 2025
- Crime · 2026
- Road crashes · 2021–2025
- Air quality · 2025
- Climate · 2006–2026
- Socio-economic (SEIFA) · 2021
- EV adoption · Jan 2025
- First Home Owner Grant · Sep 2026
- Federal electorate · 2025
- State electorate · 2026
- Amenities · Sep 2026
- Health & emergency facilities · Sep 2026
- Industrial emissions (NPI) · 2024/2025
- Coastal erosion · 1988–2025
- Aircraft noise · 2024
Vintages show when each source's data is from. See all data sources.
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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.