| Rank | Country | Sex ratio |
| Atlantic Ocean | void |
31 | Australia | at birth: 1.06 male(s)/female
under 15 years: 1.05 male(s)/female
15-64 years: 1.03 male(s)/female
65 years and over: 0.84 male(s)/female
total population: 1 male(s)/female (2009 est.) |
74 | Austria | at birth: 1.05 male(s)/female
under 15 years: 1.05 male(s)/female
15-64 years: 1.01 male(s)/female
65 years and over: 0.71 male(s)/female
total population: 0.95 male(s)/female (2009 est.) |
2 | Azerbaijan | at birth: 1.13 male(s)/female
under 15 years: 1.12 male(s)/female
15-64 years: 0.96 male(s)/female
65 years and over: 0.58 male(s)/female
total population: 0.97 male(s)/female (2009 est.) |
218 | Bahamas, The | at birth: 1.02 male(s)/female
under 15 years: 1 male(s)/female
15-64 years: 0.97 male(s)/female
65 years and over: 0.69 male(s)/female
total population: 0.96 male(s)/female (2009 est.) |
170 | Bahrain | at birth: 1.03 male(s)/female
under 15 years: 1.02 male(s)/female
15-64 years: 1.34 male(s)/female
65 years and over: 1.12 male(s)/female
total population: 1.24 male(s)/female (2009 est.) |
156 | Bangladesh | at birth: 1.04 male(s)/female
under 15 years: 1.01 male(s)/female
15-64 years: 0.9 male(s)/female
65 years and over: 0.94 male(s)/female
total population: 0.93 male(s)/female (2009 est.) |
225 | Barbados | at birth: 1.01 male(s)/female
under 15 years: 1 male(s)/female
15-64 years: 0.97 male(s)/female
65 years and over: 0.63 male(s)/female
total population: 0.94 male(s)/female (2009 est.) |
32 | Belarus | at birth: 1.06 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 (2009 est.) |
157 | Belgium | at birth: 1.04 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 (2009 est.) |
75 | 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: 0.92 male(s)/female
total population: 1.03 male(s)/female (2009 est.) |
76 | 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: 0.7 male(s)/female
total population: 1 male(s)/female (2009 est.) |
219 | Bermuda | at birth: 1.02 male(s)/female
under 15 years: 1.02 male(s)/female
15-64 years: 0.97 male(s)/female
65 years and over: 0.7 male(s)/female
total population: 0.94 male(s)/female (2009 est.) |
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