January: The Māori language magazine, The Maori Messenger or Te Karere Maori resumes publication with a change to the Māori title. It stopped publication the previous year. Under this name, it continues until 1861.[2]
23 January: The 1855 Wairarapa earthquake causes extensive damage but few deaths. The quake, estimated at magnitude 8.2, raises parts of the Wellington harbour foreshore by as much as 6 metres.[3] It is the strongest known New Zealand earthquake since European settlement.[4]
April: James McKenzie is found guilty of stealing 1000 sheep and sentenced to five years hard labour in Lyttelton. He is pardoned the following year.[5]
^Statistics New Zealand has collated estimates from a number of sources (interpolating where necessary) at "Long-term data series". Archived from the original on 5 March 2008. Retrieved 14 March 2008., in particular "A1.1 Total population.xls". Archived from the original(Excel) on 5 March 2008. Retrieved 14 March 2008.