Cook Islands's population structure shows a slightly lower male to female ratio of 0.96 to 1, with a median male age of 36.09 years old and a median female age of 38.05 years old. The highest concentration of adults under 75 years old is in the 18 and 19 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