Statistics New Zealand describes Bethells Beach as a rural settlement, which covers and had an estimated population of as of with a population density of people per km2. The settlement is part of the larger Muriwai Valley-Bethells Beach statistical area. Bethells Beach had a population of 255 in the
2023 New Zealand census, a decrease of 9 people (−3.4%) since the
2018 census, and unchanged since the
2013 census. There were 123 males, 132 females and 3 people of
other genders in 108 dwellings. 5.9% of people identified as
LGBTIQ+. The median age was 47.8 years (compared with 38.1 years nationally). There were 36 people (14.1%) aged under 15 years, 39 (15.3%) aged 15 to 29, 135 (52.9%) aged 30 to 64, and 39 (15.3%) aged 65 or older.
Muriwai Valley-Bethells Beach statistical area Muriwai Valley-Bethells Beach statistical area, which does not include
Muriwai settlement, covers and had an estimated population of as of with a population density of people per km2. Muriwai Valley-Bethells Beach had a population of 1,089 in the
2023 New Zealand census, a decrease of 15 people (−1.4%) since the
2018 census, and an increase of 144 people (15.2%) since the
2013 census. There were 528 males, 555 females and 3 people of
other genders in 378 dwellings. 3.6% of people identified as
LGBTIQ+. The median age was 42.9 years (compared with 38.1 years nationally). There were 225 people (20.7%) aged under 15 years, 150 (13.8%) aged 15 to 29, 552 (50.7%) aged 30 to 64, and 162 (14.9%) aged 65 or older.
Marae Te Henga is a tribal meeting ground for the local
iwi of
Te Kawerau a Maki. Historically there were several marae spread around the Te Henga (Bethells Beach) area, however these sites are now all in private ownership and housing. Currently the iwi are in negotiations with Auckland Council to set up a new marae at Te Henga so they can return to their ancestral heartland. == Geology==