Lake Munmorah, NSW
By Lauren McCaleb · Reviewed by Dylan Duncan ·
Less advantaged than the national average
Lake Munmorah is more socio-economically advantaged than about 20% of the 14,462 Australian suburbs we score, based on the ABS SEIFA index (raw score 927, 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.
Lake Munmorah at a glance
- Population (2021)
- 5,084
- Median age
- 50
- Median weekly household income
- $1,155
- SEIFA score
- 927
- Coordinates
- -33.1933, 151.5720
Lake Munmorah demographics (2021 Census)
The figures below profile Lake Munmorah 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 seniors (65+) at 31%, 18% of homes are rented, and 12% of residents were born overseas.
Age profile
| Age group | People | Share |
|---|---|---|
| Children (0–14) | 768 | 15% |
| Youth (15–24) | 502 | 10% |
| Young adults (25–44) | 981 | 19% |
| Mid-life (45–64) | 1,277 | 25% |
| Seniors (65+) | 1,563 | 31% |
Share of the 5,091 people counted by age.
Housing and households
| Tenure | Dwellings | Share |
|---|---|---|
| Owned outright | 1,074 | 49% |
| Owned with a mortgage | 647 | 30% |
| Rented | 387 | 18% |
| Dwelling type | Dwellings | Share |
|---|---|---|
| Houses | 2,091 | 97% |
| Townhouses & semis | 42 | 2% |
| Flats & apartments | 27 | 1% |
Tenure and dwelling shares are of the roughly 2,164 occupied private dwellings in Lake Munmorah.
- Median weekly rent
- $380
- Median monthly mortgage
- $1,733
- Average household size
- 2.3 people
- Median weekly family income
- $1,579
- Median weekly personal income
- $625
Community and culture
- Born overseas
- 574 (12%)
- Speaks a language other than English at home
- 155 (3%)
- Aboriginal and/or Torres Strait Islander
- 278 (5%)
Work and education
- Completed Year 12
- 1,432 (34%)
- Labour-force participation
- 48.3%
- Unemployment rate
- 4.7%
- Employed full-time
- 1,033
- Employed part-time
- 695
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.
Weather and climate in Lake Munmorah
Based on 2014–2023 records, the warmest month in Lake Munmorah is January (average daytime high around 26.6°C) and the coolest is July (around 17.4°C). The area receives roughly 956 mm of rain across the year.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 26.6°C | 19.9°C | 99 mm |
| Feb | 25.9°C | 19.7°C | 106 mm |
| Mar | 24.9°C | 18.6°C | 157 mm |
| Apr | 22.7°C | 15.4°C | 91 mm |
| May | 20°C | 12.2°C | 38 mm |
| Jun | 17.3°C | 10.2°C | 65 mm |
| Jul | 17.4°C | 9.1°C | 63 mm |
| Aug | 18.2°C | 9.4°C | 54 mm |
| Sep | 20.5°C | 11.6°C | 56 mm |
| Oct | 22.6°C | 14.3°C | 80 mm |
| Nov | 23.8°C | 16°C | 69 mm |
| Dec | 25.6°C | 18.1°C | 78 mm |
Climate normals, 2014–2023 (Open-Meteo, ERA5 reanalysis).
Common questions about Lake Munmorah
Where is Lake Munmorah?
Lake Munmorah is a suburb of New South Wales, Australia.
What is the population of Lake Munmorah?
At the 2021 Census, Lake Munmorah had a population of about 5,084.
Is Lake Munmorah an advantaged area?
Lake Munmorah has an ABS SEIFA score of 927, where about 1000 is the national average — higher scores indicate greater relative socio-economic advantage. That gives it a Suburb Score of 20 out of 100 — more socio-economically advantaged than about 20% of Australian suburbs.
What is the weather like in Lake Munmorah?
Lake Munmorah has average daytime highs of about 22.1°C and overnight lows of about 14.5°C, with roughly 956 mm of rain across the year (based on 2014–2023 climate normals).
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