Serpentine-Jarrahdale · Council (LGA)
How well-off the area is, how fast its population is growing, and the businesses and new homes here.
A rapid 21.5% population increase since 2021 has driven significant expansion across Serpentine-Jarrahdale. This growth is paired with a strong overall advantage score of 995, placing the area ahead of about 75% of similar regions. It is a prosperous area with very low levels of disadvantage.
All council (lga) areas, 2021. The marker is Serpentine-Jarrahdale — higher than 71% of areas.
SEIFA indexes ranking relative advantage and disadvantage.
Residents have excellent access to money and resources, scoring a maximum 10 out of 10. While overall advantage is high, education and job skills are more modest, ranking higher than about half of similar areas.
8
Higher than 71% of council (lga) areas.
ABS Index of Relative Socio-economic Advantage and Disadvantage, 2021, as a national decile: 1 = among the 10% most disadvantaged areas in Australia, 10 = among the 10% most advantaged. IRSAD summarises both advantage and disadvantage, so a high score reflects relatively many high-income, well-educated households and few low-income, low-skill ones.
9
Higher than 86% of council (lga) areas.
ABS Index of Relative Socio-economic Disadvantage, 2021, as a national decile: 1 = among the 10% most disadvantaged areas in Australia, 10 = among the least disadvantaged. IRSD focuses on disadvantage alone (low income, low education, unemployment, unskilled occupations), so a higher decile means relatively less disadvantage.
10
Higher than 99% of council (lga) areas.
ABS Index of Economic Resources, 2021, as a national decile: 1 = among the 10% lowest areas for economic resources in Australia, 10 = among the highest. IER reflects the income, housing costs, dwelling size and assets of households, so a higher decile means relatively greater economic resources.
5
Lower than 57% of council (lga) areas.
ABS Index of Education and Occupation, 2021, as a national decile: 1 = among the 10% lowest areas for education and occupation in Australia, 10 = among the highest. IEO reflects residents' qualifications and the skill level of their jobs, so a higher decile means a more highly educated and skilled workforce.
995
Higher than 75% of council (lga) areas.
ABS Index of Relative Socio-economic Advantage and Disadvantage, 2021, as a raw index score (standardised so the Australian average is about 1000). Higher scores indicate relatively greater advantage; lower scores greater disadvantage.
Annual population estimates and change since the census.
The population grew by 21.5% since 2021, a rate far above the Western Australian figure of 10.7%. With 40,531 people, this is one of the fastest-growing areas of its kind.
40,531
Higher than 70% of council (lga) areas.
Estimated resident population (ABS), 2025.
21.5%
Higher than 99% of council (lga) areas.
Population growth since the 2021 Census, from ABS annual estimates.
Operating businesses and dwellings approved.
Building activity is strong, with 381 approved dwellings, which is more than about 80% of similar areas. There are currently 2,809 businesses operating in the region.
2,809
Higher than 63% of council (lga) areas.
Operating businesses (ABS Counts of Australian Businesses), June 2025.
381
Higher than 77% of council (lga) areas.
Dwelling units approved in 2024-25 (ABS Building Approvals).
Australian Bureau of Statistics. (2021). Economy & Advantage in Serpentine-Jarrahdale [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/lga/LGA57700/serpentine-jarrahdale/topic/economy-advantage
