"In particular the 2018 Census did not achieve a comprehensive population coverage for Maori and Pacific peoples."
He said the 2018 Census had been underfunded by the previous National Government.
A pilot of an iwi-led census team would also be trialled in the Far North and East Cape this census, to build iwi data capability and to deliver iwi-led collections in two locations where response rates were historically lower.
"Led by Te Kāhui Raraunga, the operating arm of the Data Iwi Leaders Group, 2023 Census data will be collected by iwi collectives in the Far North by Te Ōhua and on the East Cape – by Toitū Tairāwhiti," Associate Statistics Minister Meka Whaitiri said.
Government Statistician Mark Sowden said this year there would be more paper forms available, and they would be provided earlier.
"A big focus for the 2023 Census is achieving the highest response rates possible, especially for Māori, Pacific peoples, and other population groups with historically lower response rates," Sowden said.
Census data is the official count of how many people and dwellings there are in New Zealand – it is used by governments and local councils to direct resources for schools and hospitals and infrastructure like roads and public transport.
Organisations also use census data to support applications for funding for their communities.
Under the Data and Statistics Act 2022, everyone living or staying in Aotearoa New Zealand on the night of the census, Tuesday, March 7, 2023, is required to complete a census form.
This includes parents and caregivers completing census information for children and babies.