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Sex ratio by country for the population below age 15. Blue represents more boys, red more girls than the world average of 1.07 males/female. Sex ratio by country for total population. Blue represents more men and boys, red more women and girls than the world average of 1.01 males/female. Sex ratio by country for the over-65 population.
It shows the male to female sex ratio by the Central Intelligence Agency of the United States. If there is a discrepancy between The World Factbook and a country's census data, the latter may be used instead. A ratio above 1, for example 1.1, means there are more males than females (1.1 males for every female).
The value for the entire world population is 1.02 males/female, [115] with 1.07 at birth, 1.06 for those under 15, 1.02 for those between 15 and 64, and 0.78 for those over 65. The Northern Mariana Islands have the highest female ratio with 0.77 males per female. Qatar has the highest male ratio, with 2.
The median age of the total population as of 2021 is 38.8 years; the male median age is 37.7 years; the female median age is 39.8 years. [52] Median age of the U.S. population through history. Source: U.S. Department of Commerce. Bureau of Census, United States Census Bureau and The World Factbook. [63] [64]
In 2014, the ratio of female births per 1000 male births varied from 887 to 918 using these estimates. [6] According to the NFHS-4 (2015–16) sex ratio of the total population (females per 1,000 males) was 991 (with an urban ratio of 956 and a rural ratio of 1,009). [4]
1.11 male to female (2020 est.) 65 and over: 0.90 male to female (2020 est.) ... (the number of males for each female in a population) at birth was 118.06 boys to ...
If the male fish dies, the strongest female changes its sex to become the male for the group. All of these wrasses are born female, and only become male in this situation. Other species, like clownfish, do this in reverse, where all start out as non-reproductive males, and the largest male becomes a female, with the second-largest male maturing ...
under 15 years: 1.04 males: 1 female 15–64 years: 1.02 males: 1 female 65 years and over: 0.9 males: 1 female total population: 1 male: 1 female (2024 est.) Maternal mortality rate. 3 deaths/100,000 live births (2020 est.) Infant mortality rate. 1.6 deaths/1,000 live births (2024 est.) Life expectancy at birth. total population: 84 years male ...