Average household size

Dolphin Sands's household size is 1.8 — among the lowest in the country, much lower than the typical suburb (2.5).

It ranks 956th from the bottom of 14,740 suburbs nationally — lower than 96% of them.

Dolphin Sands has a higher household size than nearby Friendly Beaches, but a lower one than Freycinet, Bicheno and Swansea (Tas.).

Since 2011, it has fallen 14% (from 2.1) — a bigger change than the national fall of 4%.