Hauts-de-France
Hauts-de-France (; pcd, Heuts-d'Franche; , also ''Upper France'') is the northernmost region of France, created by the territorial reform of French regions in 2014, from a merger of Nord-Pas-de-Calais and Picardy. Its prefecture is Lille. The ...
in northern
France
France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan ar ...
. It was established on 1 January 2019 by merger of the former communes of Mametz (the seat) and
Carnoy
Carnoy () is a former commune in the Somme department in Hauts-de-France in northern France. On 1 January 2019, it was merged into the new commune Carnoy-Mametz.Arrêté préfectoral 26 October 2018