Cynthia, QLD

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

53/100

Suburb Score

Around the national middle

Cynthia is more socio-economically advantaged than about 53% of the 14,462 Australian suburbs we score, based on the ABS SEIFA index (raw score 993, 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.

Cynthia at a glance

Population (2021): 13
Median age: 53
Median weekly household income: $1,062
SEIFA score: 993
Coordinates: -25.2036, 151.1221

Cynthia demographics (2021 Census)

The figures below profile Cynthia 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 64% and 0% of residents were born overseas.

Age profile

Age group	People	Share
Children (0–14)	0	0%
Youth (15–24)	0	0%
Young adults (25–44)	4	36%
Mid-life (45–64)	7	64%
Seniors (65+)	0	0%

Share of the 11 people counted by age.

Housing and households

Dwelling type	Dwellings	Share
Houses	7	100%
Townhouses & semis	0	0%
Flats & apartments	0	0%

Tenure and dwelling shares are of the roughly 7 occupied private dwellings in Cynthia.

Median weekly rent: $92
Median monthly mortgage: $6,500
Average household size: 1.7 people
Median weekly family income: $2,250
Median weekly personal income: $824

Community and culture

Born overseas: 0 (0%)
Speaks a language other than English at home: 0 (0%)
Aboriginal and/or Torres Strait Islander: 0 (0%)

Work and education

Completed Year 12: 5 (36%)
Labour-force participation: 45.5%
Employed full-time: 3
Employed part-time: 4

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.

Common questions about Cynthia

Where is Cynthia?

Cynthia is a suburb of Queensland, Australia.

What is the population of Cynthia?

At the 2021 Census, Cynthia had a population of about 13.

Is Cynthia an advantaged area?

Cynthia has an ABS SEIFA score of 993, where about 1000 is the national average — higher scores indicate greater relative socio-economic advantage. That gives it a Suburb Score of 53 out of 100 — more socio-economically advantaged than about 53% of Australian suburbs.