| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Caan | city | Land Rheinland-Pfalz | Germany | 50.4666667 | 7.6166667 | 977 | 24895 |
| Calenborn | city | Land Rheinland-Pfalz | Germany | 50.2666667 | 7.0833333 | 1453 | 14052 |
| Callbach | city | Land Rheinland-Pfalz | Germany | 49.7 | 7.7 | 1000 | 15720 |
| Carlsberg | city | Land Rheinland-Pfalz | Germany | 49.5038889 | 8.0416667 | 938 | 17977 |
| Carlshausen | city | Land Rheinland-Pfalz | Germany | 50.0166667 | 6.2333333 | 1545 | 5669 |
| Carlshof | city | Land Rheinland-Pfalz | Germany | 49.8166667 | 7.4833333 | 1141 | 16672 |
| Carweiler | city | Land Rheinland-Pfalz | Germany | 50.5666667 | 7.1166667 | 567 | 20451 |
| Cassel | city | Land Rheinland-Pfalz | Germany | 50.4333333 | 7.0666667 | 1850 | 16392 |
| Charlottenberg | city | Land Rheinland-Pfalz | Germany | 50.35 | 7.8833333 | 856 | 16369 |
| Clausen | city | Land Rheinland-Pfalz | Germany | 49.2666667 | 7.6833333 | 1076 | 12987 |
| Coblence | city | Land Rheinland-Pfalz | Germany | 50.35 | 7.6 | 524 | 72669 |
| Coblentz | city | Land Rheinland-Pfalz | Germany | 50.35 | 7.6 | 524 | 72669 |
| Coblenz | city | Land Rheinland-Pfalz | Germany | 50.35 | 7.6 | 524 | 72669 |
| Coblenza | city | Land Rheinland-Pfalz | Germany | 50.35 | 7.6 | 524 | 72669 |
| Cochem | city | Land Rheinland-Pfalz | Germany | 50.1333333 | 7.15 | 1082 | 8701 |
| Coisdorf | city | Land Rheinland-Pfalz | Germany | 50.5333333 | 7.25 | 623 | 18471 |
| Colgenstein-Heidesheim | city | Land Rheinland-Pfalz | Germany | 49.5833333 | 8.2022222 | 521 | 21343 |
| Colln | city | Land Rheinland-Pfalz | Germany | 49.6833333 | 7.8 | 1023 | 11554 |
| Colverath | city | Land Rheinland-Pfalz | Germany | 50.2666667 | 6.9666667 | 1686 | 8875 |
| Cond | city | Land Rheinland-Pfalz | Germany | 50.0833333 | 7.1666667 | 853 | 8718 |
| Confluentes | city | Land Rheinland-Pfalz | Germany | 50.35 | 7.6 | 524 | 72669 |
| Contwig | city | Land Rheinland-Pfalz | Germany | 49.25 | 7.4333333 | 797 | 18904 |
| Conz | city | Land Rheinland-Pfalz | Germany | 49.7 | 6.5833333 | 633 | 23542 |
| Cottenborn | city | Land Rheinland-Pfalz | Germany | 50.35 | 6.9 | 1781 | 13765 |
| Cramberg | city | Land Rheinland-Pfalz | Germany | 50.35 | 7.95 | 495 | 15974 |
| Cronenberg | city | Land Rheinland-Pfalz | Germany | 49.65 | 7.6166667 | 1010 | 14578 |
| Cruchten | city | Land Rheinland-Pfalz | Germany | 49.9 | 6.3166667 | 1082 | 5652 |
| Cölln | city | Land Rheinland-Pfalz | Germany | 49.6833333 | 7.8 | 1023 | 11554 |
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