| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Clacy-et-Thierret | city | Picardie | France | 49.54 | 3.57 | 216 | 16193 |
| Clairfontaine | city | Picardie | France | 49.98 | 3.99 | 830 | 7082 |
| Clairoix | city | Picardie | France | 49.44 | 2.85 | 108 | 45460 |
| Clairox | city | Picardie | France | 49.44 | 2.85 | 108 | 45460 |
| Clairy | city | Picardie | France | 49.86 | 2.18 | 249 | 9647 |
| Clairy-Cheuchoé | city | Picardie | France | 49.86 | 2.18 | 249 | 9647 |
| Clairy-Saulchois | city | Picardie | France | 49.86 | 2.18 | 249 | 9647 |
| Clairy-Saulchoix | city | Picardie | France | 49.86 | 2.18 | 249 | 9647 |
| Clamecy | city | Picardie | France | 49.43 | 3.36 | 830 | 18652 |
| Clanlieu | city | Picardie | France | 49.85 | 3.65 | 830 | 5423 |
| Clastres | city | Picardie | France | 49.75 | 3.23 | 249 | 6825 |
| Cleriacum ad Samaram | city | Picardie | France | 49.96 | 2.89 | 164 | 7890 |
| Clermont | city | Picardie | France | 49.67 | 3.94 | 830 | 1765 |
| Clermont | city | Picardie | France | 49.38 | 2.41 | 314 | 26599 |
| Clermont-de-l'Oise | city | Picardie | France | 49.38 | 2.41 | 314 | 26599 |
| Clermont-en-Beauvaisis | city | Picardie | France | 49.38 | 2.41 | 314 | 26599 |
| Clermont-les-Fermes | city | Picardie | France | 49.67 | 3.94 | 830 | 1765 |
| Clery | city | Picardie | France | 49.96 | 2.89 | 164 | 7890 |
| Clery-sur-Somme | city | Picardie | France | 49.96 | 2.89 | 164 | 7890 |
| Cléry-su-Sonme | city | Picardie | France | 49.96 | 2.89 | 164 | 7890 |