🇫🇷 Wattrelos is a commune in the Nord department in the Nord-Pas de Calais region of northern France. It is located on the border with Belgium, north-east of the city of Lille. The fifth-largest component of the Métropole Européenne de Lille, Wattrelos borders the communes of Roubaix, Tourcoing and Leers in France and the communes of Mouscron and Estaimpuis in Belgium.
Wattrelos has a population of over 41,541 people. Wattrelos also forms one of the centres of the wider Métropole Européenne de Lille metropolitan area which has a population of over 2,594,456 people.