Stickybeak

SEIFA in Thornleigh (2120)

Thornleigh (2120) has a SEIFA relative socio-economic advantage and disadvantage (SEIFA-IRSD) score that places it in the context of all Australian neighbourhoods by income, education, occupation, and access to services. For property buyers, the SEIFA decile is a useful single-number proxy for the socio-economic character of a suburb. Its trajectory matters as much as its current position.

2120

Socio-economic profile

ABS SEIFA 2021 · SEIFA · Thornleigh

Thornleigh sits in the 10th decile nationally for socio-economic advantage — highly advantaged, around the 98th percentile of Australian suburbs.

National ranking

Advantage & disadvantage (IRSAD)10th decile98th percentile · rank #14,069
Education & occupation (IEO)10th decile98th percentile · rank #14,103

Within NSW

IRSAD (NSW)10th decilerank #4,075 of NSW suburbs
IEO (NSW)10th decilerank #4,136 of NSW suburbs

Raw scores

IRSAD score1,122mean 1000 · sd 100
IEO score1,135mean 1000 · sd 100
Population8,898usual residents

ABS SEIFA 2021 (CC BY 4.0) · Released 27 Apr 2023 · Decile 10 = most advantaged

SEIFA deciles have a well-documented relationship with long-run property price growth in Sydney. Higher-decile suburbs tend to retain value better during downturns and recover faster after corrections, reflecting the financial resilience of owner-occupiers. Lower-decile suburbs can deliver strong growth during boom phases as affordability pressure pushes buyers further from the city, but they are typically more volatile.

SEIFA in nearby suburbs

Asquith 2077Berowra 2081Mount Colah 2079Mount Kuring-Gai 2080Normanhurst 2076

More about Thornleigh

All insights →Flood riskBushfire riskSchoolsWalkabilityAmenitiesCommute