Average household size

Tunkalilla's household size is 1.2 — among the lowest in the country, much lower than the typical suburb (2.5).

It ranks 164th from the bottom of 14,740 suburbs nationally — lower than 99% of them.

Tunkalilla has a lower household size than nearby Wirrina Cove, Second Valley and Parawa.

Since 2016, it has fallen 60% (from 3.0) — a bigger change than the national fall of 4%.