The main N-II road and a RENFE railway line run through the town, while a local road links it with the A-19 autopista at Alella.
The town center has buildings in a wide range of styles: neoclassical, modernista, noucentista and simply eclectic. The municipal museum has collections of archeology and of Catalan ceramics, and there is also a private museum of pharmacy and medicine. A Roman village called Cal Ros de les Cabres was one of the first settlements located on the site of the current town.
The agriculture of El Masnou is mainly of flowers, especially carnations, and the industry has a predominance of textile, with several industries about ceramics, glass and pharmaceutical products.