Avondale, comprising the statistical areas of Avondale Rosebank, Avondale West (Auckland), Avondale North (Auckland), Avondale Central (Auckland) and Avondale South (Auckland), had a population of 20,082 at the 2018 New Zealand census, an increase of 1,788 people (9.8%) since the 2013 census, and an increase of 2,517 people (14.3%) since the 2006 census. There were 5,985 households. There were 10,086 males and 9,993 females, giving a sex ratio of 1.01 males per female, with 3,708 people (18.5%) aged under 15 years, 5,253 (26.2%) aged 15 to 29, 9,123 (45.4%) aged 30 to 64, and 1,998 (9.9%) aged 65 or older.