Ethnic identity
In the New Zealand census, people were asked to indicate the ethnic group or groups with which they identified. The numbers include those who indicated more than one group.
- Irish: 12,651 (2006); 14,193 (2013); 17,835 (2018)
Country of birth
The New Zealand census figures listed here show the number of residents born in Ireland, or after 1921 the two separate parts of Ireland.
Ireland
- 1858 census: 4,554
- 1901 census: 43,524
Northern Ireland
- 1951 census: 8,817
- 1976 census: 9,694
- 2001 census: 4,095
- 2006 census: 4,776
- 2013 census: 4,710
- 2018 census: 4,806
Republic of Ireland
- 1951 census: 6,423
- 1976 census: 5,622
- 2001 census: 6,726
- 2006 census: 6,888
- 2013 census: 9,042
- 2018 census: 10,494
Ireland (undefined)
- 1951 census: 1,932
- 1976 census: 1,877