0.96 male(s)/female (2001 est.)

Bahrain:
at birth: 1.03 male(s)/female

under 15 years: 1.03 male(s)/female

15-64 years: 1.45 male(s)/female

65 years and over: 1.03 male(s)/female

total population: 1.29 male(s)/female (2001 est.)

Bangladesh:
at birth: 1.06 male(s)/female

under 15 years: 1.05 male(s)/female

15-64 years: 1.05 male(s)/female

65 years and over: 1.19 male(s)/female

total population: 1.05 male(s)/female (2001 est.)

Barbados:
at birth: 1.01 male(s)/female

under 15 years: 1.02 male(s)/female

15-64 years: 0.95 male(s)/female

65 years and over: 0.63 male(s)/female

total population: 0.93 male(s)/female (2001 est.)

Belarus:
at birth: 1.05 male(s)/female

under 15 years: 1.04 male(s)/female

15-64 years: 0.94 male(s)/female

65 years and over: 0.49 male(s)/female

total population: 0.88 male(s)/female (2001 est.)

Belgium:
at birth: 1.05 male(s)/female

under 15 years: 1.05 male(s)/female

15-64 years: 1.02 male(s)/female

65 years and over: 0.69 male(s)/female

total population: 0.96 male(s)/female (2001 est.)

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: 0.95 male(s)/female

total population: 1.03 male(s)/female (2001 est.)

Benin:
at birth: 1.03 male(s)/female

under 15 years: 1.02 male(s)/female

15-64 years: 0.94 male(s)/female

65 years and over: 0.75 male(s)/female

total population: 0.97 male(s)/female (2001 est.)

Bermuda:
at birth: 0.94 male(s)/female

under 15 years: 0.98 male(s)/female

15-64 years: 0.98 male(s)/female

65 years and over: 0.76 male(s)/female

total population: 0.95 male(s)/female (2001 est.)

Bhutan:
at birth: 1.05 male(s)/female

under 15 years: 1.08 male(s)/female

15-64 years: 1.06 male(s)/female

65 years and over: 1.03 male(s)/female

total population: 1.07 male(s)/female (2001 est.)

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: 0.82 male(s)/female

total population: 0.98 male(s)/female (2001 est.)

Bosnia and Herzegovina:
at birth: 1.07 male(s)/female

under 15 years: 1.06 male(s)/female

15-64 years: 1.05 male(s)/female

65 years and over: 0.73 male(s)/female