Maldives
at birth: 1.05 male(s)/female
under 15 years: 1.04 male(s)/female
15-64 years: 1.62 male(s)/female
65 years and over: 1 male(s)/female
total population: 1.44 male(s)/female (2009 est.)

Mali
at birth: 1.03 male(s)/female
under 15 years: 1.02 male(s)/female
15-64 years: 0.99 male(s)/female
65 years and over: 0.64 male(s)/female
total population: 0.99 male(s)/female (2009 est.)

Malta
at birth: 1.06 male(s)/female
under 15 years: 1.06 male(s)/female
15-64 years: 1.03 male(s)/female
65 years and over: 0.76 male(s)/female
total population: 0.99 male(s)/female (2009 est.)

Marshall Islands
at birth: 1.05 male(s)/female
under 15 years: 1.04 male(s)/female
15-64 years: 1.05 male(s)/female
65 years and over: 0.94 male(s)/female
total population: 1.04 male(s)/female (2009 est.)

Mauritania
at birth: 1.03 male(s)/female
under 15 years: 1.01 male(s)/female
15-64 years: 0.89 male(s)/female
65 years and over: 0.74 male(s)/female
total population: 0.93 male(s)/female (2009 est.)

Mauritius
at birth: 1.05 male(s)/female
under 15 years: 1.03 male(s)/female
15-64 years: 0.99 male(s)/female
65 years and over: 0.67 male(s)/female
total population: 0.97 male(s)/female (2009 est.)

Mayotte
at birth: 1.03 male(s)/female
under 15 years: 1.01 male(s)/female
15-64 years: 1.16 male(s)/female
65 years and over: 1.04 male(s)/female
total population: 1.08 male(s)/female (2009 est.)

Mexico
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: 0.82 male(s)/female
total population: 0.96 male(s)/female (2009 est.)

Micronesia, Federated States of
at birth: 1.05 male(s)/female
under 15 years: 1.03 male(s)/female
15-64 years: 0.99 male(s)/female
65 years and over: 0.74 male(s)/female
total population: 1 male(s)/female (2009 est.)

Moldova
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: 0.58 male(s)/female
total population: 0.91 male(s)/female (2009 est.)