Coatesville covers and had an estimated population of as of with a population density of people per km2. Coatesville had a population of 2,112 in the
2023 New Zealand census, an increase of 192 people (10.0%) since the
2018 census, and an increase of 267 people (14.5%) since the
2013 census. There were 1,041 males, 1,065 females and 9 people of
other genders in 681 dwellings. 2.8% of people identified as
LGBTIQ+. The median age was 43.0 years (compared with 38.1 years nationally). There were 393 people (18.6%) aged under 15 years, 396 (18.8%) aged 15 to 29, 1,008 (47.7%) aged 30 to 64, and 321 (15.2%) aged 65 or older. ==Education==