One Tree Hill, New Zealand

One Tree Hill covers 2.75 km² (1.06 sq mi)^[1] and had an estimated population of 4,920 as of June 2025,^[2] with a population density of 1,789 people per km².

One Tree Hill had a population of 4,500 in the 2023 New Zealand census, a decrease of 6 people (−0.1%) since the 2018 census, and an increase of 339 people (8.1%) since the 2013 census. There were 2,190 males, 2,286 females and 24 people of other genders in 1,704 dwellings.^[6] 4.1% of people identified as LGBTIQ+. The median age was 36.0 years (compared with 38.1 years nationally). There were 792 people (17.6%) aged under 15 years, 831 (18.5%) aged 15 to 29, 2,340 (52.0%) aged 30 to 64, and 537 (11.9%) aged 65 or older.^[5]

People could identify as more than one ethnicity. The results were 58.7% European (Pākehā); 9.4% Māori; 12.5% Pasifika; 27.1% Asian; 4.1% Middle Eastern, Latin American and African New Zealanders (MELAA); and 2.0% other, which includes people giving their ethnicity as "New Zealander". English was spoken by 92.8%, Māori language by 2.1%, Samoan by 2.4%, and other languages by 28.1%. No language could be spoken by 2.8% (e.g. too young to talk). New Zealand Sign Language was known by 0.5%. The percentage of people born overseas was 38.0, compared with 28.8% nationally.^[5]

Religious affiliations were 34.9% Christian, 2.7% Hindu, 2.6% Islam, 0.5% Māori religious beliefs, 1.7% Buddhist, 0.2% New Age, 0.1% Jewish, and 1.5% other religions. People who answered that they had no religion were 49.2%, and 6.9% of people did not answer the census question.^[5]

Of those at least 15 years old, 1,647 (44.4%) people had a bachelor's or higher degree, 1,350 (36.4%) had a post-high school certificate or diploma, and 705 (19.0%) people exclusively held high school qualifications. The median income was $56,100, compared with $41,500 nationally. 798 people (21.5%) earned over $100,000 compared to 12.1% nationally. The employment status of those at least 15 was that 2,220 (59.9%) people were employed full-time, 420 (11.3%) were part-time, and 102 (2.8%) were unemployed.^[5]

Oranga School is a coeducational contributing primary school (years 1–6) with a roll of 209 as of March 2026.^[9][10]

• Cicely Hilda Farmer (1870–1955), novelist (born in One Tree Hill)^[11]
• Arthur Hall (1880–1931), MP for the Reform Party and farmer (born in One Tree Hill)^[12]

One Tree Hill was first governed by the One Tree Hill Road District in 1863. In 1930 the One Tree Hill Borough was formed.^[13] in 1989 it was absorbed into Auckland City.^[14]