| Name | Country | 14C dates | |
|---|---|---|---|
|
161-180 / 936 show all | |||
| Carlow | Ireland | 33 | Show |
| Carmarthenshire | United Kingdom | 9 | Show |
| Caserta | Italy | 6 | Show |
| Castellón | Spain | 6 | Show |
| Castelo Branco | Portugal | 16 | Show |
| Catanzaro | Italy | 3 | Show |
| Causeni | Moldova | 1 | Show |
| Cavan | Ireland | 10 | Show |
| Central Bedfordshire | United Kingdom | 27 | Show |
| Ceredigion | United Kingdom | 19 | Show |
| Cerknica | Slovenia | 5 | Show |
| Charente | France | 61 | Show |
| Charente-Maritime | France | 59 | Show |
| Cher | France | 8 | Show |
| Cherkasy | Ukraine | 84 | Show |
| Chernihiv | Ukraine | 2 | Show |
| Chernivtsi | Ukraine | 2 | Show |
| Cheshire East | United Kingdom | 6 | Show |
| Cheshire West and Chester | United Kingdom | 8 | Show |
| Chieti | Italy | 3 | Show |
