word | | Exchange rates |
| US | China | Renminbi yuan (RMB) per US dollar - 6.455 (2011 est.) 6.7703 (2010 est.) 6.8314 (2009) 6.9385 (2008) 7.61 (2007) |
| US | Christmas Island | Australian dollars (AUD) per US dollar - 0.9694 (2011) 1.0902 (2010) 1.2822 (2009) 1.2059 (2008) 1.2137 (2007) |
| US | Cocos (Keeling) Islands | Australian dollars (AUD) per US dollar - 0.9694 (2011) 1.0902 (2010) 1.2822 (2009) 1.2059 (2008) 1.2137 (2007) |
| US | Colombia | Colombian pesos (COP) per US dollar - 1,812.8 (2011 est.) 1,899 (2010 est.) 2,157.6 (2009) 2,243.6 (2008) 2,013.8 (2007) |
| US | Comoros | Comoran francs (KMF) per US dollar - 349.7 (2011 est.) 371.46 (2010 est.) |
| US | Congo, Democratic Republic of the | Congolese francs (CDF) per US dollar - 1,000 (2011 est.) 912 (2010 est.) 472.19 (2009) 559 (2008) 516 (2007) |
| US | Congo, Republic of the | Cooperation Financiere en Afrique Centrale francs per US dollar - 473.7 (2011 est.) 495.28 (2010 est.) 472.19 (2009) 447.81 (2008) 483.6 (2007) |
| US | Cook Islands | NZ dollars (NZD) per US dollar - 1.266 (2011) 1.3874 (2010) 1.6002 (2009) 1.3811 (2007) |
| US | Costa Rica | Costa Rican colones (CRC) per US dollar - 503.5 (2011 est.) 525.83 (2010 est.) 573.29 (2009) 530.41 (2008) 519.53 (2007) |
| US | Cote d'Ivoire | Communaute Financiere Africaine francs (XOF) per US dollar - 465.2 (2011 est.) 495.28 (2010 est.) 472.19 (2009) 447.81 (2008) 481.83 (2007) |
| US | Croatia | kuna (HRK) per US dollar - 5.25 (2011 est.) 5.4779 (2010 est.) 5.2692 (2009) 4.98 (2008) 5.3735 (2007) |
| US | Cuba | Cuban pesos (CUP) per US dollar - 0.9847 (2011 est.) 0.9259 (2010 est.) 0.9259 (2009) 0.9259 (2008) 0.9259 (2007) |
| US | Curacao | Netherlands Antillean guilders (ANG) per US dollar - 1.79 (2011 est.) 1.79 (2010 est.) 1.79 (2009) 1.79 (2008) 1.79 (2007) |