The rural area around Helensville, covering 57 square kilometres, had a population of 1,524 at the 2018 New Zealand census, an increase of 189 people (14.2%) since the 2013 census, and an increase of 315 people (26.1%) since the 2006 census. There were 498 households. There were 771 males and 753 females, giving a sex ratio of 1.02 males per female. The median age was 42.4 years, with 306 people (20.1%) aged under 15 years, 264 (17.3%) aged 15 to 29, 771 (50.6%) aged 30 to 64, and 183 (12.0%) aged 65 or older.