| Code | Name | Continent | Independence Year | Population | Life Expectancy |
| ROM | Romania | Europe | 1,878 | 22,455,500 | 69.90 |
| RUS | Russian Federation | Europe | 1,991 | 146,934,000 | 67.20 |
| RWA | Rwanda | Africa | 1,962 | 7,733,000 | 39.30 |
| SAU | Saudi Arabia | Asia | 1,932 | 21,607,000 | 67.80 |
| SDN | Sudan | Africa | 1,956 | 29,490,000 | 56.60 |
| SEN | Senegal | Africa | 1,960 | 9,481,000 | 62.20 |
| SGP | Singapore | Asia | 1,965 | 3,567,000 | 80.10 |
| SGS | South Georgia and the South Sandwich Islands | Antarctica | NULL | 0 | NULL |
| SHN | Saint Helena | Africa | NULL | 6,000 | 76.80 |
| SJM | Svalbard and Jan Mayen | Europe | NULL | 3,200 | NULL |
| SLB | Solomon Islands | Oceania | 1,978 | 444,000 | 71.30 |
| SLE | Sierra Leone | Africa | 1,961 | 4,854,000 | 45.30 |
| SLV | El Salvador | North America | 1,841 | 6,276,000 | 69.70 |
| SMR | San Marino | Europe | 885 | 27,000 | 81.10 |
| SOM | Somalia | Africa | 1,960 | 10,097,000 | 46.20 |
| SPM | Saint Pierre and Miquelon | North America | NULL | 7,000 | 77.60 |
| SSD | South Sudan | Africa | 2,011 | 12,340,000 | 56.50 |
| STP | Sao Tome and Principe | Africa | 1,975 | 147,000 | 65.30 |
| SUR | Suriname | South America | 1,975 | 417,000 | 71.40 |
| SVK | Slovakia | Europe | 1,993 | 5,398,700 | 73.70 |