| Name | Country | 14C dates | |
|---|---|---|---|
|
741-760 / 936 show all | |||
| Côte-d'Or | France | 17 | Show |
| Cosenza | Italy | 10 | Show |
| Çorum | Turkey | 4 | Show |
| Corse-du-Sud | France | 6 | Show |
| Corrèze | France | 3 | Show |
| Cornwall | United Kingdom | 91 | Show |
| Cork | Ireland | 160 | Show |
| Córdoba | Spain | 28 | Show |
| Conwy | United Kingdom | 16 | Show |
| Constanta | Romania | 10 | Show |
| Coleraine | United Kingdom | 24 | Show |
| Coimbra | Portugal | 1 | Show |
| Cluj | Romania | 5 | Show |
| Clare | Ireland | 67 | Show |
| Ciudad Real | Spain | 27 | Show |
| City | United Kingdom | 2 | Show |
| Chieti | Italy | 3 | Show |
| Cheshire West and Chester | United Kingdom | 8 | Show |
| Cheshire East | United Kingdom | 6 | Show |
| Chernivtsi | Ukraine | 2 | Show |
