Mangaore is a small town in the district of Horowhenua, in the southwestern North Island of New Zealand. It is located 4 kilometres southeast of Shannon.

Mangaore Reserve is a park with several sections, one containing Mangaore Hall, and another with walking tracks in an area called "Snake Gully". The hall is run by a local residents association, and can hold up to 200 people.

The town was the headquarters for the construction of the Mangahao Power Station in 1919–1924.

Mangaore is defined by Statistics New Zealand as a rural settlement and covers 3.94 km (1.52 sq mi). It had an estimated population of 80 as of June 2024, with a population density of 20 people per km. It is part of the wider Miranui statistical area.

Historical population

Year	Pop.	±% p.a.
2006	81	—
2013	78	−0.54%
2018	78	+0.00%
Source:

Mangaore had a population of 78 at the 2018 New Zealand census, unchanged since the 2013 census, and a decrease of 3 people (−3.7%) since the 2006 census. There were 36 households, comprising 39 males and 36 females, giving a sex ratio of 1.08 males per female. The median age was 35.8 years (compared with 37.4 years nationally), with 21 people (26.9%) aged under 15 years, 12 (15.4%) aged 15 to 29, 33 (42.3%) aged 30 to 64, and 9 (11.5%) aged 65 or older.

Ethnicities were 84.6% European/Pākehā, 38.5% Māori, 7.7% Pasifika, and 3.8% Asian. People may identify with more than one ethnicity.

Although some people chose not to answer the census's question about religious affiliation, 61.5% had no religion, 23.1% were Christian and 3.8% had other religions.

Of those at least 15 years old, 6 (10.5%) people had a bachelor's or higher degree, and 12 (21.1%) people had no formal qualifications. The median income was $29,200, compared with $31,800 nationally. 6 people (10.5%) earned over $70,000 compared to 17.2% nationally. The employment status of those at least 15 was that 30 (52.6%) people were employed full-time, 3 (5.3%) were part-time, and 6 (10.5%) were unemployed.