The arrondissement of Lille is an arrondissement of France in the Nord department in the Hauts-de-France region. It has 124 communes. Its population is 1,237,472, and its area is 879.5 km2.
Wikipedia https://en.wikipedia.org/wiki/Arrondissement_of_Lille
Coordinates 50°38'11.635" N 3°3'48.702" E