Rānui is a suburb of Porirua City approximately 21 kilometres (13 mi) north of Wellington in New Zealand. Rānui means midday in the Māori language.

Rānui, comprising the statistical areas of Porirua East and Ranui Heights, covers 3.56 km (1.37 sq mi). It had an estimated population of 3,710 as of June 2024, with a population density of 1,042 people per km.

Historical population

Year	Pop.	±% p.a.
2006	3,477	—
2013	3,447	−0.12%
2018	3,561	+0.65%
Source:

Rānui had a population of 3,561 at the 2018 New Zealand census, an increase of 114 people (3.3%) since the 2013 census, and an increase of 84 people (2.4%) since the 2006 census. There were 1,146 households, comprising 1,743 males and 1,821 females, giving a sex ratio of 0.96 males per female, with 780 people (21.9%) aged under 15 years, 858 (24.1%) aged 15 to 29, 1,554 (43.6%) aged 30 to 64, and 369 (10.4%) aged 65 or older.

Ethnicities were 47.7% European/Pākehā, 28.6% Māori, 37.7% Pasifika, 11.3% Asian, and 2.3% other ethnicities. People may identify with more than one ethnicity.

The percentage of people born overseas was 22.4, compared with 27.1% nationally.

Although some people chose not to answer the census's question about religious affiliation, 39.5% had no religion, 46.7% were Christian, 1.1% had Māori religious beliefs, 1.7% were Hindu, 1.9% were Muslim, 1.0% were Buddhist and 1.4% had other religions.

Of those at least 15 years old, 426 (15.3%) people had a bachelor's or higher degree, and 618 (22.2%) people had no formal qualifications. 294 people (10.6%) earned over $70,000 compared to 17.2% nationally. The employment status of those at least 15 was that 1,422 (51.1%) people were employed full-time, 348 (12.5%) were part-time, and 177 (6.4%) were unemployed.

Individual statistical areas

Name	Area (km)	Population	Density (per km)	Households	Median age	Median income
Porirua East	1.21	2,235	1,847	681	29.5 years	$23,800
Rānui Heights	2.35	1,326	564	465	38.6 years	$36,900
New Zealand					37.4 years	$31,800

Porirua East School is a co-educational state primary school for Year 1 to 6 students with a roll of 137 as of August 2024. The school opened in 1954.