| Rank | Country | Sex ratio |
182 | 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 (2011 est.) |
144 | Cook Islands | at birth: 1.048 male(s)/female under 15 years: 1.13 male(s)/female 15-64 years: 1.07 male(s)/female 65 years and over: 0.96 male(s)/female total population: 1.07 male(s)/female (2011 est.) |
| Coral Sea Islands | void |
96 | Costa Rica | 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: 0.86 male(s)/female total population: 1.01 male(s)/female (2011 est.) |
183 | 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: 0.99 male(s)/female total population: 1.03 male(s)/female (2011 est.) |
67 | Croatia | at birth: 1.055 male(s)/female under 15 years: 1.06 male(s)/female 15-64 years: 0.99 male(s)/female 65 years and over: 0.64 male(s)/female total population: 0.93 male(s)/female (2011 est.) |
43 | 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: 0.83 male(s)/female total population: 0.99 male(s)/female (2011 est.) |
1 | Curacao | at birth: 1.15 male(s)/female under 15 years: 1.05 male(s)/female 15-64 years: 0.82 male(s)/female 65 years and over: 0.67 male(s)/female total population: 0.85 male(s)/female (2010) |
97 | Cyprus | at birth: 1.05 male(s)/female under 15 years: 1.06 male(s)/female 15-64 years: 1.08 male(s)/female 65 years and over: 0.77 male(s)/female total population: 1.04 male(s)/female (2011 est.) |
54 | Czech Republic | at birth: 1.059 male(s)/female under 15 years: 1.06 male(s)/female 15-64 years: 1.01 male(s)/female 65 years and over: 0.66 male(s)/female total population: 0.95 male(s)/female (2011 est.) |
68 | Denmark | at birth: 1.055 male(s)/female under 15 years: 1.05 male(s)/female 15-64 years: 1.01 male(s)/female 65 years and over: 0.78 male(s)/female total population: 0.98 male(s)/female (2011 est.) |