 Nelson Region had a population of 50,880 at the 2018 New Zealand census, an increase of 4,443 people (9.6%) since the 2013 census, and an increase of 7,992 people (18.6%) since the 2006 census.There were 19,821 households.There were 24,804 males and 26,076 females, giving a sex ratio of 0.95 males per female.