2009 estimate  21,885,016 Density   2.833/km  7.3/sq mi Source of Map and Statistics: Wikipedia New Zealand Statistics Capital   Wellington Largest city   Auckland Official languages   English (98%)   Māori (4.2%) NZ Sign Language (0.6%) Ethnic groups 78% European /Other   14.6% Māori 9.2% Asian 6.9% Pacific peoples Government   Parliamentary democracy and Constitutional