Average household size

Londonderry's household size is 2.9 — well above average.

It ranks 38th of 436 state electorates nationally — higher than 85% of them.

Londonderry has a higher household size than nearby Seven Hills and Penrith, but a lower one than Baulkham Hills, Prospect and Cabramatta.

Since 2011, it has fallen 9% (from 3.2) — a bigger change than the national fall of 4%.