Nine LGAs along the harbour-and-bushland spine. 931,439 people. The data layer for commissioning care across the catchment — built from Census, ABS, AIHW, ACARA, DSS and ATO sources, refreshed on cadence.
Every one of SNHN's nine LGAs sits in IRSD decile 10 nationally. The disadvantage frame doesn't fit. The planning frame that does fit is ageing and care load — 56,100 age pensioners and 10,790 on the DSP, with the share aged 65+ ranging from 12.4% (Lane Cove, Ryde) to 18.3% (Mosman).
All nine LGAs at decile 10. Yet within that decile, IRSD raw scores still span 55 points — from Ryde (1055) to Mosman (1110). Treat the catchment as uniform and you'll miss where care need actually clusters — in the older corners (Mosman, Hunters Hill) and the lower-IRSD corners (Ryde, Willoughby).
Source · ABS SEIFA 2021 · 9 LGAs · IRSD raw score range 1055–1110SNHN's catchment seen through Australian Institute of Health & Welfare PHN-performance indicators — the data that directly maps to commissioning priorities. Mental-health service indicators load in a separate ETL; cancer screening and ED/admissions via Northern Sydney LHN are next.
A 7.8 pp First Nations gap at 5-year-olds — fully-immunised rate 86.15% vs 93.91% overall.
On urgent-triage performance SNHN runs +7pp ahead of National (68% vs 61%) — but 4-hour ED throughput trails by 2pp.
Treatment episodes peaked at 3,437 in 2020-21 — pandemic-era — and have since settled 14% lower.
Vaccine-preventable PPH at 250/100k vs 2,219/100k total — the largest single lever.
BMI recorded in only 19.8% of practices — lowest of all indicators. HbA1c and BP sit near 50%.
Every dataset modelled to SNHN's boundaries. Open a tool to drill from network down to SA1.
ABS ERP age × sex per LGA — 2024 latest. 17.6% aged 65+ across the catchment.
IRSD/IRSAD/IER/IEO at LGA level. All 9 SNHN LGAs at decile 10 — variance is in the raw scores (1055–1110).
268 schools, 153,466 enrolments in catchment. ACARA latest with ICSEA, sector, LBOTE %.
397,804 ABN-registered businesses in catchment; 46,650 new in last 12 months. Health-sector filter TBC.
TfNSW GTFS stops, route frequency, distance-to-care isochrones. Catchment-code mapping in progress.
Rents, sales, and affordability across the catchment — a determinant your team can plan against.
176,415 modelled MH cases (18.9% prev.). 100,782 service-need gap — 61% concentrated in the three hub LGAs (Hornsby, Ryde, Northern Beaches).
Choose a metric below — population, ageing, CALD, income, care load. Click any LGA for the full dossier.
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Click any LGA for the full dossier — population structure, social profile, economic, care load, schools, businesses. Press Esc to close.
Every figure is sourced, dated and reproducible. Catchment defined by the Department of Health's PHN boundary, mapped at SA1 from the ABS 2021 Geographic Standard.
SNHN's portal was built in two weeks from public data + their LGA list. Yours can too — same shape, your colours, your data sources. From A$5k starter.
Behind the demographics. Where care need actually clusters.
SA2-level Census aggregated to SNHN's nine LGAs via the ABS concordance. Counts are overlap-weighted sums; medians are population-weighted across contributing SA2s.
39.2% born overseas
31.0% speak a language other than English at home — a major CALD signal for service design. Indigenous share is 0.48%, below the national rate.
83.0% completed Year 12
Of adults reporting highest year completed. 53,939 currently in university — proxy for a knowledge-economy catchment.
A$588/wk median rent
Dwelling mix: 50.7% houses · 39.6% apartments · 9.2% semi-detached. Median mortgage A$3,079/mo.
A$2,639/wk median household
Personal median A$1,143/wk. Unemployment 3.9% — well below the national rate.