Niue's population structure shows a somewhat lower male to female ratio of 0.93 to 1, with a median male age of 36.67 years old and a median female age of 37.88 years old. The highest concentration of adults under 75 years old is in the 18 and 64 year-old age groups, while the lowest concentration is in the 74 and 73 year-old age groups.
Data after 2022 is projected based on recent change