Cecil Hills, NSW

By Lauren McCaleb · Reviewed by Dylan Duncan · Updated 30 May 2026

70/100

Suburb Score

More advantaged than the national average

Cecil Hills is more socio-economically advantaged than about 70% of the 14,462 Australian suburbs we score, based on the ABS SEIFA index (raw score 1022, 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.

Cecil Hills at a glance

Population (2021): 6,906
Median age: 38
Median weekly household income: $2,409
SEIFA score: 1022
Coordinates: -33.8875, 150.8431

Cecil Hills demographics (2021 Census)

The figures below profile Cecil Hills 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 30%, 14% of homes are rented, and 46% of residents were born overseas.

Age profile

Age group	People	Share
Children (0–14)	1,220	18%
Youth (15–24)	1,227	18%
Young adults (25–44)	1,497	22%
Mid-life (45–64)	2,102	30%
Seniors (65+)	864	13%

Share of the 6,910 people counted by age.

Housing and households

Tenure	Dwellings	Share
Owned outright	665	36%
Owned with a mortgage	880	47%
Rented	269	14%

Dwelling type	Dwellings	Share
Houses	1,767	95%
Townhouses & semis	89	5%
Flats & apartments	8	0%

Tenure and dwelling shares are of the roughly 1,864 occupied private dwellings in Cecil Hills.

Median weekly rent: $550
Median monthly mortgage: $2,167
Average household size: 3.6 people
Median weekly family income: $2,346
Median weekly personal income: $727

Community and culture

Born overseas: 3,054 (46%)
Speaks a language other than English at home: 3,995 (60%)
Aboriginal and/or Torres Strait Islander: 25 (0%)

Work and education

Completed Year 12: 3,416 (64%)
Labour-force participation: 57.1%
Unemployment rate: 5.1%
Employed full-time: 1,632
Employed part-time: 875

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 Cecil Hills

Based on 2014–2023 records, the warmest month in Cecil Hills is January (average daytime high around 29°C) and the coolest is July (around 16.9°C). The area receives roughly 777 mm of rain across the year.

Month	Avg high	Avg low	Rain
Jan	29°C	18.5°C	75 mm
Feb	27.6°C	18°C	83 mm
Mar	25.7°C	16.8°C	128 mm
Apr	23.1°C	13.2°C	65 mm
May	19.8°C	9.6°C	34 mm
Jun	16.9°C	7.5°C	48 mm
Jul	16.9°C	6.2°C	53 mm
Aug	18°C	6.8°C	49 mm
Sep	21.2°C	9°C	34 mm
Oct	24°C	12.1°C	72 mm
Nov	25.7°C	14.3°C	67 mm
Dec	28°C	16.7°C	69 mm

Climate normals, 2014–2023 (Open-Meteo, ERA5 reanalysis).

Common questions about Cecil Hills

Where is Cecil Hills?

Cecil Hills is a suburb of New South Wales, Australia.

What is the population of Cecil Hills?

At the 2021 Census, Cecil Hills had a population of about 6,906.

Is Cecil Hills an advantaged area?

Cecil Hills has an ABS SEIFA score of 1022, where about 1000 is the national average — higher scores indicate greater relative socio-economic advantage. That gives it a Suburb Score of 70 out of 100 — more socio-economically advantaged than about 70% of Australian suburbs.

What is the weather like in Cecil Hills?

Cecil Hills has average daytime highs of about 23°C and overnight lows of about 12.4°C, with roughly 777 mm of rain across the year (based on 2014–2023 climate normals).