Mountain Lagoon, NSW
By Lauren McCaleb · Reviewed by Dylan Duncan ·
Among Australia's more advantaged suburbs
Mountain Lagoon is more socio-economically advantaged than about 81% of the 14,462 Australian suburbs we score, based on the ABS SEIFA index (raw score 1044, where about 1000 is the national average).
A socio-economic measure from ABS Census data — not a measure of how good a suburb is to live in or visit. How we calculate this.
Is Mountain Lagoon a good place to live?
There’s no single answer — it depends on what matters to you. So instead of one mystery number, we break it down: a transparent score on each part of life we can back with public data, and an honest “not yet” on the parts we can’t.
Around the national middle
A weighted blend of the 2 components we can score for Mountain Lagoon from public data. It sits alongside — and reconciles with — the socio-economic Suburb Score above; it is a transparent read, not a complete verdict.
Socio-economic advantage
81/100Among Australia's more advantaged suburbs
Among Australia's more advantaged suburbs — the same ABS SEIFA-based Suburb Score (81/100) shown above. Income, education and occupation, as published by the ABS. · ABS SEIFA 2021
Housing affordability
27/100Less affordable than the national median
Median weekly rent was $360 at the 2021 Census — more affordable than about 27% of suburbs we can compare. Housing data only, no valuations. · ABS Census 2021
Not yet scored
We’d rather leave these open than publish a number we can’t stand behind. Here’s where each one stands.
- Amenities & accessNot scored yet — our OpenStreetMap amenity mapping is still rolling out across suburbs.
- Green spaceNot scored yet — our OpenStreetMap green-space mapping is still rolling out across suburbs.
- TransportNot scored yet — our OpenStreetMap public-transport mapping is still rolling out across suburbs.
- SchoolsNot scored yet — school performance (ACARA / ICSEA) needs a data-reuse licence cleared before we can publish it.
- SafetyNot scored yet — Australia has no single open crime dataset and safety data carries defamation and legal care, so it is gated pending a go/no-go and will be data-only when added.
- CommunityNot scored yet — we won't reduce community to a number from a proxy. We'd rather leave it open than publish an invented value judgement.
A transparent read on public data, not a verdict — and not a measure of any person or community. See our methodology for how each component is worked out and why some aren’t scored yet.
Mountain Lagoon at a glance
- Population (2021)
- 78
- Median age
- 55
- Median weekly household income
- $1,625
- SEIFA score
- 1044
- Local government area
- Hawkesbury
- Coordinates
- -33.4366, 150.6204
Map of Mountain Lagoon
© OpenStreetMap contributors · View larger map
Housing & property in Mountain Lagoon
What it costs to live in Mountain Lagoon and how residents hold their homes, from the Australian Bureau of Statistics 2021 Census.
- Median rent
- $360
- per week
- Median mortgage
- $2,167
- per month
- Owner-occupied
- 79%
- of dwellings
- Rented
- 9%
- of dwellings
The full tenure and dwelling-type breakdown is in the Mountain Lagoon demographics section below.
Source: ABS Census of Population and Housing, 2021. © Australian Bureau of Statistics, released under CC BY 4.0. See our methodology.
Mountain Lagoon demographics (2021 Census)
The figures below profile Mountain Lagoon using the Australian Bureau of Statistics 2021 Census; every percentage is a share of a clearly stated Census count, so each one traces back to the source. At a glance, the largest age group is mid-life (45–64) at 56% and 27% of residents were born overseas.
Age profile
| Age group | People | Share |
|---|---|---|
| Children (0–14) | 3 | 4% |
| Youth (15–24) | 3 | 4% |
| Young adults (25–44) | 3 | 4% |
| Mid-life (45–64) | 38 | 56% |
| Seniors (65+) | 21 | 31% |
Share of the 68 people counted by age.
Housing and households
| Tenure | Dwellings | Share |
|---|---|---|
| Owned outright | 18 | 53% |
| Owned with a mortgage | 9 | 26% |
| Rented | 3 | 9% |
| Dwelling type | Dwellings | Share |
|---|---|---|
| Houses | 30 | 100% |
| Townhouses & semis | 0 | 0% |
| Flats & apartments | 0 | 0% |
Tenure and dwelling shares are of the roughly 30 occupied private dwellings in Mountain Lagoon.
- Average household size
- 2.3 people
- Median weekly family income
- $2,249
- Median weekly personal income
- $749
Community and culture
- Born overseas
- 19 (27%)
- Speaks a language other than English at home
- 13 (16%)
- Aboriginal and/or Torres Strait Islander
- 4 (5%)
Work and education
- Completed Year 12
- 43 (61%)
- Labour-force participation
- 47.2%
- Unemployment rate
- 2.9%
- Employed full-time
- 11
- Employed part-time
- 11
Source: ABS Census of Population and Housing, 2021 (General Community Profile, by Suburb and Locality). © Australian Bureau of Statistics, released under CC BY 4.0. How we group bands and derive each share is set out on our methodology page.
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Common questions about Mountain Lagoon
Is Mountain Lagoon a good place to live?
There's no single answer, so we score what the public data can back. On socio-economic advantage and housing affordability, Mountain Lagoon rates 63/100 overall (Around the national middle). Public transport, schools and safety aren't scored yet — see our methodology for why.
What is the median rent in Mountain Lagoon?
At the 2021 Census, the median weekly rent in Mountain Lagoon was $360, and the median monthly mortgage repayment was $2,167. These are official ABS Census figures — StreetScout publishes housing data only, with no property valuations or agent referrals.
Where is Mountain Lagoon?
Mountain Lagoon is a suburb of New South Wales, Australia, in the Hawkesbury local government area.
What is the population of Mountain Lagoon?
At the 2021 Census, Mountain Lagoon had a population of about 78.
Is Mountain Lagoon an advantaged area?
Mountain Lagoon has an ABS SEIFA score of 1044, where about 1000 is the national average — higher scores indicate greater relative socio-economic advantage. That gives it a Suburb Score of 81 out of 100 — more socio-economically advantaged than about 81% of Australian suburbs.
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