Whangapoua is described by Statistics New Zealand as a rural settlement. It covers and had an estimated population of as of with a population density of people per km2. Whangapoua is part of the larger
Mercury Bay North statistical area. Whangapoua had a population of 84 in the
2023 New Zealand census, an increase of 9 people (12.0%) since the
2018 census, and an increase of 42 people (100.0%) since the
2013 census. There were 42 males and 39 females in 51 dwellings. 3.6% of people identified as
LGBTIQ+. The median age was 57.9 years (compared with 38.1 years nationally). There were 12 people (14.3%) aged under 15 years, 6 (7.1%) aged 15 to 29, 33 (39.3%) aged 30 to 64, and 30 (35.7%) aged 65 or older. ==References==