Wattle Downs, comprising the statistical areas of Wattle Downs West, Wattle Downs North and Wattle Downs East, had a population of 8,496 at the 2018 New Zealand census, an increase of 1,038 people (13.9%) since the 2013 census, and an increase of 1,683 people (24.7%) since the 2006 census. There were 2,589 households. There were 4,095 males and 4,401 females, giving a sex ratio of 0.93 males per female, with 2,004 people (23.6%) aged under 15 years, 1,638 (19.3%) aged 15 to 29, 3,606 (42.4%) aged 30 to 64, and 1,245 (14.7%) aged 65 or older.