| Rank | Country | Median age |
198 | Rwanda | total: 18.7 years male: 18.5 years female: 19 years (2011 est.) |
31 | Saint Barthelemy | total: 40.4 years male: 40.6 years female: 40.3 years (2011 est.) |
46 | Saint Helena | total: 38.8 years male: 38.8 years female: 38.7 years (2011 est.) |
84 | Saint Kitts and Nevis | total: 32 years male: 32.1 years female: 32 years (2011 est.) |
85 | Saint Lucia | total: 31 years male: 29.9 years female: 32.1 years (2011 est.) |
86 | Saint Martin | total: 31 years male: 29.9 years female: 31.8 years (2011 est.) |
8 | Saint Pierre and Miquelon | total: 42.6 years male: 42.2 years female: 43 years (2011 est.) |
99 | Saint Vincent and the Grenadines | total: 30.1 years male: 30.2 years female: 30 years (2011 est.) |
165 | Samoa | total: 22.1 years male: 22 years female: 22.3 years (2011 est.) |
11 | San Marino | total: 42.5 years male: 41.7 years female: 43.2 years (2011 est.) |
212 | Sao Tome and Principe | total: 17.5 years male: 17.1 years female: 18 years (2011 est.) |
137 | Saudi Arabia | total: 25.3 years male: 26.4 years female: 23.9 years (2011 est.) |
209 | Senegal | total: 18 years male: 17.2 years female: 18.9 years (2011 est.) |
21 | Serbia | total: 41.3 years male: 39.6 years female: 43.1 years (2011 est.) |
80 | Seychelles | total: 32.5 years male: 32 years female: 33 years (2011 est.) |
194 | Sierra Leone | total: 19.1 years male: 18.6 years female: 19.5 years (2011 est.) |
36 | Singapore | total: 40.1 years male: 39.6 years female: 40.6 years (2011 est.) |