Whau ward had a population of 79,356 at the 2018 New Zealand census, an increase of 6,762 people (9.3%) since the 2013 census, and an increase of 10,185 people (14.7%) since the 2006 census. There were 24,675 households, comprising 39,639 males and 39,717 females, giving a sex ratio of 1.0 males per female. The median age was 34.4 years (compared with 37.4 years nationally), with 15,000 people (18.9%) aged under 15 years, 18,480 (23.3%) aged 15 to 29, 36,252 (45.7%) aged 30 to 64, and 9,624 (12.1%) aged 65 or older.
