| Rank | Country | Sex ratio |
35 | Belarus | at birth: 1.062 male(s)/female under 15 years: 1.06 male(s)/female 15-64 years: 0.94 male(s)/female 65 years and over: 0.47 male(s)/female total population: 0.87 male(s)/female (2011 est.) |
152 | Belgium | at birth: 1.045 male(s)/female under 15 years: 1.04 male(s)/female 15-64 years: 1.02 male(s)/female 65 years and over: 0.71 male(s)/female total population: 0.96 male(s)/female (2011 est.) |
89 | Belize | at birth: 1.05 male(s)/female under 15 years: 1.04 male(s)/female 15-64 years: 1.02 male(s)/female 65 years and over: 0.91 male(s)/female total population: 1.03 male(s)/female (2011 est.) |
90 | Benin | at birth: 1.05 male(s)/female under 15 years: 1.04 male(s)/female 15-64 years: 0.99 male(s)/female 65 years and over: 0.69 male(s)/female total population: 1 male(s)/female (2011 est.) |
222 | Bermuda | at birth: 1.015 male(s)/female under 15 years: 1.01 male(s)/female 15-64 years: 0.97 male(s)/female 65 years and over: 0.71 male(s)/female total population: 0.94 male(s)/female (2011 est.) |
91 | Bhutan | at birth: 1.05 male(s)/female under 15 years: 1.04 male(s)/female 15-64 years: 1.13 male(s)/female 65 years and over: 1.12 male(s)/female total population: 1.1 male(s)/female (2011 est.) |
92 | Bolivia | at birth: 1.05 male(s)/female under 15 years: 1.04 male(s)/female 15-64 years: 0.96 male(s)/female 65 years and over: 0.79 male(s)/female total population: 0.98 male(s)/female (2011 est.) |
17 | Bosnia and Herzegovina | at birth: 1.074 male(s)/female under 15 years: 1.07 male(s)/female 15-64 years: 1.02 male(s)/female 65 years and over: 0.69 male(s)/female total population: 0.97 male(s)/female (2011 est.) |
174 | Botswana | at birth: 1.03 male(s)/female under 15 years: 1.04 male(s)/female 15-64 years: 1.02 male(s)/female 65 years and over: 0.68 male(s)/female total population: 1.01 male(s)/female (2011 est.) |
| Bouvet Island | void |