A smaller number of iwi-specific names such as Mahinarangi, a famous East Coast and Waikato name, and Waimirirangi, from the Far North, were also identified by the department.
Waikato University senior lecturer in Maori and Pacific Development, Tom Roa, has been researching Maori naming practices - an interest kicked off after he received a call in 2006 from an institution that had discovered a new type of insect and wanted to name it after the monarch Te Arikinui Dame Te Atairangikaahu, who had just died.
His research draws on Maori naming traditions such as certain names being given before conception, or to commemorate a tragedy. Some babies might not be named for a number of years; others might receive new names in adulthood for an event.
Mr Roa said he wasn't surprised Manaia was a favourite for both sexes, as its root word is mana. "The key finding was that the person being named has a mana of his or her own. So Manaia is reflective of that mana."
Top Maori names
Girls
Maia
Aria
Manaia
Anahera
Ataahua
Aroha
Tia
Ariana
Kaia
Kahurangi
Boys
Nikau
Wiremu
Kahurangi
Kauri
Nikora
Tane
Tamati
Rawiri
Anaru
Tai