173,404 residents · 110+ languages recorded at suburb level.
Onkaparinga is home to 173,404 residents. 10.1% of them speak a language other than English at home. That's 17,569 people whose daily linguistic reality shapes how services, communications and campaigns actually reach them.
This briefing pulls the full ABS Census 2021 picture for Onkaparinga into a single shareable document: the languages spoken at home, the communities growing fastest, and the suburb-level variation that a council-wide average hides.
Bars show share of LGA residents · growth since last census
Click a suburb to drill down to SAL-level figures
We turn census data into targeted outreach plans: which documents to translate first, which community leaders to engage, where the gaps are.