Auckland is home to many cultures. The majority of inhabitants claim European - predominantly British - descent, but substantial Maori, Pacific Islander and Asian communities exist as well. Auckland has the largest Polynesian population of any city in the world and a higher proportion of people of Asian origin than the rest of New Zealand. Ethnic groups from all corners of the world have a presence in Auckland, making it by far the country's most cosmopolitan city.

The proportion of Asians and other Non-European immigrants has increased during the last decades due to Immigration, and the removal of restrictions directly or indirectly based on race. Immigration to New Zealand is heavily concentrated towards Auckland (partly for job market reasons). This strong focus on Auckland has led the immigration services to award extra points towards immigration visa requirements for people intending to move to other parts of New Zealand.
The following table shows the ethnic profile of Auckland's population, as recorded in the 2001 and 2006 New Zealand Census. The percentages add up to more than 100%, as some people counted themselves as belonging to more than one ethnic group. Figures for 2006 refer to the whole Auckland Region, not just the urban area. The substantial percentage drop of 'Europeans' was mainly caused by the increasing numbers of people from this group choosing to define themselves as 'New Zealanders' - even though this was not one of the groups listed on the census form.

The 2006 Census also provides information about the multilinguality of the region. 867,825 people in the Auckland Region spoke one language only, 274,863 spoke two, and 57,051 three or more