Democratic Republic of the
at birth: 1.03 male(s)/female
under 15 years: 1.01 male(s)/female
15-64 years: 0.99 male(s)/female
65 years and over: 0.68 male(s)/female
total population: 0.99 male(s)/female (2008 est.)

Congo, Republic of the
at birth: 1.03 male(s)/female
under 15 years: 1.01 male(s)/female
15-64 years: 0.99 male(s)/female
65 years and over: 0.7 male(s)/female
total population: 0.99 male(s)/female (2008 est.)

Cook Islands
total population: 1.07 male(s)/female (2001 census)

Costa Rica
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: 0.86 male(s)/female
total population: 1.02 male(s)/female (2008 est.)

Cote d'Ivoire
at birth: 1.03 male(s)/female
under 15 years: 1.02 male(s)/female
15-64 years: 1.04 male(s)/female
65 years and over: 1.01 male(s)/female
total population: 1.03 male(s)/female (2008 est.)

Croatia
at birth: 1.06 male(s)/female
under 15 years: 1.05 male(s)/female
15-64 years: 0.99 male(s)/female
65 years and over: 0.63 male(s)/female
total population: 0.93 male(s)/female (2008 est.)

Cuba
at birth: 1.06 male(s)/female
under 15 years: 1.06 male(s)/female
15-64 years: 1 male(s)/female
65 years and over: 0.84 male(s)/female
total population: 0.99 male(s)/female (2008 est.)

Cyprus
at birth: 1.05 male(s)/female
under 15 years: 1.04 male(s)/female
15-64 years: 1.03 male(s)/female
65 years and over: 0.78 male(s)/female
total population: 1 male(s)/female (2008 est.)

Czech Republic
at birth: 1.06 male(s)/female
under 15 years: 1.06 male(s)/female
15-64 years: 1.01 male(s)/female
65 years and over: 0.65 male(s)/female
total population: 0.95 male(s)/female (2008 est.)

Denmark
at birth: 1.06 male(s)/female
under 15 years: 1.05 male(s)/female
15-64 years: 1.01 male(s)/female
65 years and over: 0.77 male(s)/female
total population: 0.98 male(s)/female (2008 est.)

Djibouti
at birth: 1.03 male(s)/female
under 15 years: 1.01 male(s)/female
15-64 years: 1.07 male(s)/female
65 years and over: 1.01 male(s)/female
total population: 1.04 male(s)/female (2008 est.)

Dominica
at birth: 1.05 male(s)/female
under 15 years: 1.05 male(s)/female
15-64 years: 1.05 male(s)/female
65 years and over: 0.76 male(s)/female
total population: 1.02 male(s)/female (2008 est.)

Dominican Republic
at birth: 1.