| Country | Exchange rates |
| Saint Barthelemy |  euros (EUR) per US dollar - 0.7107 (2011 est.) 0.755 (2010 est.) 0.7198 (2009 est.) 0.6827 (2008 est.) 0.7345 (2007 est.) |
| Saint Helena |  Saint Helenian pounds (SHP) per US dollar - 0.6176 (2011) 0.6468 (2010) 0.6175 (2009) 0.4993 (2007) |
| Saint Kitts and Nevis |  East Caribbean dollars (XCD) per US dollar - 2.7 (2011 est.) 2.7 (2010 est.) 2.7 (2009)
|
| Saint Lucia |  East Caribbean dollars (XCD) per US dollar - 2.7 (2011 est.) 2.7 (2010 est.) 2.7 (2009)
|
| Saint Martin |  euros (EUR) per US dollar - 0.7107 (2011 est.) 0.755 (2010 est.) 0.7198 (2009 est.) 0.6827 (2008 est.) 0.7345 (2007 est.) |
| Saint Pierre and Miquelon |  euros (EUR) per US dollar - 0.7107 (2011 est.) 0.755 (2010 est.) 0.7198 (2009 est.) 0.6827 (2008 est.) 0.7345 (2007 est.) |
| Saint Vincent and the Grenadines |  East Caribbean dollars (XCD) per US dollar - 2.7 (2011 est.) 2.7 (2010 est.) 2.7 (2009)
|
| Samoa |  tala (SAT) per US dollar - 2.31 (2011 est.) 2.48 |
| San Marino |  euros (EUR) per US dollar - 0.7107 (2011 est.) 0.755 (2010 est.) 0.7198 (2009 est.) 0.6827 (2008 est.) 0.7345 (2007 est.) |
| Sao Tome and Principe |  dobras (STD) per US dollar - 17,692.7 (2011 est.) 18,499 (2010 est.) 16,209 (2009) 14,900 (2008) 13,700 (2007) |
| Saudi Arabia |  Saudi riyals (SAR) per US dollar - 3.75 (2011 est.) 3.75 (2010 est.) 3.75 (2009) 3.75 (2008) 3.745 (2007) |
| Senegal |  Communaute Financiere Africaine francs (XOF) per US dollar - 466.2 (2011 est.) 494.1 (2010 est.) 472.19 (2009) 447.81 (2008) 481.83 (2007) |
| Serbia |  Serbian dinars (RSD) per US dollar - 72.46 (2011 est.) 78.576 (2010 est.) 67.634 (2009) 62.9 (2008) 54.5 (2007) |