Where the data comes from.

Australian Bureau of Statistics (ABS) Regional Population — Estimated Resident Population (ERP), year ending June 2025, at SA2 (Statistical Area Level 2) level. Fields sourced from this release: population, 1-year growth %, growth components (natural increase, net internal migration, net overseas migration), population density, and SA3/SA4 hierarchy. SA2 boundaries don't always equal suburb boundaries and the relevant SA2 is named on each profile.

ABS Census 2021 General Community Profile (median age, median household and personal income, overseas-born %, language background, Indigenous %, children aged 0–14) and ABS SEIFA 2021 (IRSD, IRSAD, IER and IEO deciles plus the IRSAD score), both at SA2 level. Census figures reflect the 2021 collection night; the next refresh follows the Census 2026 release.

Australian Curriculum, Assessment and Reporting Authority (ACARA) School Profile and School Location 2025 releases: 9,755 schools with sector, type, year range, enrolment, ICSEA and location. ICSEA reflects the academic and socioeconomic context of a school's student intake — it is published by ACARA, not computed by us. We do not display NAPLAN results: per-school NAPLAN data sits behind ACARA's data-access application process, and we won't show it without a clean licence. School catchment boundaries come from the Victorian Department of Education (School Zones 2026) and the NSW Department of Education (School Intake Zones 2026); other states' catchments will be added as their departments publish open data.

Australian Children's Education & Care Quality Authority (ACECQA) national registers: 18,000+ education and care services with National Quality Standard (NQS) ratings, service type, approved places and address. The register is refreshed daily by ACECQA; our extract is updated periodically and each page shows its data date.

Victoria: Valuer-General Victoria median house prices (Q2 2025) and DFFH moving-annual rents (Sep 2025). NSW: Department of Communities and Justice sales (Dec 2025) and rent tables (Mar 2026). All open government releases. Other states are not yet covered — pages show this explicitly rather than substituting modelled values. We do not use or redistribute proprietary CoreLogic, Domain or REA data.

NSW: Bureau of Crime Statistics and Research (BOCSAR) recorded criminal incidents by suburb (calendar year 2025, released March 2026). Victoria: Crime Statistics Agency criminal incidents by suburb/town (year ending December 2025, released March 2026). We republish the official incident counts with their categories — counts are not population-adjusted, we compute no safety score, and NSW and Victorian figures are not comparable to each other because police recording practices differ.

OpenStreetMap (© OpenStreetMap contributors, ODbL) point counts within each SA2 polygon: general practitioners and clinics, supermarkets, parks, and train stations. OSM coverage varies by area and is contributor-maintained — useful for relative comparison, not a guarantee that every local service is listed.

Median scheduled weekday AM-peak train travel time to the state CBD terminus (Flinders Street, Brisbane Central, Perth Stn) from the nearest station, computed from each state's static GTFS feed (Transport Victoria, TransLink, Transperth). Train only — bus and tram are not in scope. NSW, SA and ACT GTFS bundles require a free developer-account signup at their respective transport portals; we'll add those states once registered.

When you type a 4-digit postcode in the Safety search, we resolve it to the suburb name(s) the crime data uses. Source: Queensland Government "Locality Lookup" (CC-BY 4.0), itself a re-publication of the community-maintained matthewproctor/australian_postcodes dataset (April 2025 snapshot). Covers all active Australian postcodes; we currently surface NSW and Victoria only because that is the coverage of our crime dataset.

Victoria: whether an SA2 sits within an official Victorian planning-scheme hazard overlay — the Bushfire Management Overlay (BMO) and the flood overlays (Land Subject to Inundation, Floodway, Special Building) — and what share of the SA2 area each covers. Source: Vicmap Planning, © State of Victoria (Department of Energy, Environment and Climate Action), CC-BY 4.0. New South Wales: whether an SA2 intersects designated Bush Fire Prone Land. Source: NSW RFS Bush Fire Prone Land, © State Government of NSW and NSW Rural Fire Service, CC-BY 4.0. Note that BFPL is mapped broadly across NSW — it designates land carrying or near bushfire-prone vegetation, so most non-inner-urban SA2s intersect it; read its presence as context, not a risk level. In both states we republish the official overlay extent only; we do not compute a bushfire or flood risk score, and this is not insurance or financial advice. Overlay coverage at the SA2 level does not tell you whether a specific address is affected — always check the current planning scheme and your insurer.