Rotoiti is described by Statistics New Zealand as a rural settlement, and covers 5.86 km2 (2.26 sq mi)[1] and had an estimated population of 530 as of June 2024,[2] with a population density of 90 people per km2.

Rotoiti is part of the larger Rotoiti-Rotoehu statistical area.

Although some people chose not to answer the census's question about religious affiliation, 38.0% had no religion, 44.6% were Christian, 7.8% had Māori religious beliefs, 0.6% were Hindu, 0.6% were Buddhist and 1.8% had other religions.

[4] The Rotoiri area has seven marae: In October 2020, the Government committed $4,525,104 from the Provincial Growth Fund to upgrade Taurua Marae and nine others, creating an estimated 34 jobs.

Another $499,993 was committed to upgrading Waikōhatu Marae, creating 25 jobs.