Editing Côtes-d'Armor (section)

==Geography==
Côtes-d'Armor is part of the current administrative region of [[Brittany (administrative region)|Brittany]] and is bounded by the departments of [[Ille-et-Vilaine]] to the east, [[Morbihan]] to the south, and [[Finistère]] to the west, and by the [[English Channel]] to the north.

The region is an undulating [[plateau]] including three well-marked ranges of hills in the south. A [[granitoid]] chain, the Monts du Méné, starting in the south-east of the department runs in a north-westerly direction, forming the [[Drainage divide|watershed]] between the rivers running respectively to the [[English Channel]] and the [[Atlantic Ocean]]. Towards its western extremity this chain bifurcates to form the [[Montagnes Noires]] in the south-west and the [[Monts d'Arrée]] in the west of the department. Off the coast, which is steep, rocky and much indented, are the [[Jentilez]], [[Île-de-Bréhat|Bréhat]] and other small islands. The principal bays are those of [[Saint-Malo]] and [[Saint-Brieuc]].<ref>{{EB1911|inline=y|wstitle=Côtes-du-Nord|volume=7|page=249}}</ref>

===Principal towns===

The most populous commune is [[Saint-Brieuc]], the prefecture. As of 2019, there are 6 communes with more than 10,000 inhabitants:<ref name=pop2019/>

{| class=wikitable
! Commune
! Population (2019)
|-
| [[Saint-Brieuc]]
| style="text-align: center;" | 43,605
|-
| [[Lannion]]
| style="text-align: center;" | 20,210
|-
| [[Lamballe-Armor]]
| style="text-align: center;" | 16,688
|-
| [[Dinan]]
| style="text-align: center;" | 14,407
|-
| [[Plérin]]
| style="text-align: center;" | 14,309
|-
| [[Ploufragan]]
| style="text-align: center;" | 11,383
|}