Montreuil Population and Area (Seine-Saint-Denis)

Montreuil: Population and Area

With 112,549 inhabitants (INSEE total population in force on January 1, 2026), Montreuil is the 37^th most populous town in France in 2026 and the 2^nd most populous in the Seine-Saint-Denis department, out of 39 communes. It covers 8.92 km² (21,090^th largest area in France, 6^th largest in the department), with a population density of 12,618 inhabitants per km², or 115 times the national average (110 inhabitants/km²), which ranks it 26^th in France for density.

Montreuil is located in the Seine-Saint-Denis department (93), in the Île-de-France region, where it ranks 4^th by population out of 1,266 communes. The most populous town in the Seine-Saint-Denis department is Saint-Denis (149,936 inhabitants); the department is home to 1,710,659 people over 236 km².

See the full ranking of communes in the Seine-Saint-Denis department and the regional ranking: largest city in Île-de-France.

Towns of similar size in the Seine-Saint-Denis department: Saint-Denis (pop. 149,936), Aubervilliers (pop. 88,529), Aulnay-sous-Bois (pop. 87,951), Noisy-le-Grand (pop. 73,408).

Sources: INSEE, official population figures in force on January 1, 2026 (total population); areas: IGN / Observatoire des territoires; INSEE code 93048. Rankings are calculated across the 34,858 communes of metropolitan and overseas France in our database.

Montreuil, a large city in eastern Paris's suburbs

Bordering Paris and the Val-de-Marne department, Montreuil is the second-largest town in Seine-Saint-Denis, behind Saint-Denis, and one of the most populous in Île-de-France. Its size is that of a suburb right on the capital's doorstep: the town grew with the workers and craftsmen of the 19^th century, then with the large housing estates of the postwar years.

Lower and upper Montreuil, two faces of a dense town

Lower Montreuil, next to Paris and Vincennes, is one of the densest and most sought-after neighborhoods in the eastern suburbs, attracting artists, families and young professionals from the capital. Upper Montreuil, on the plateau where gypsum was once quarried and where the famous peaches of the "murs à pêches" (peach walls) were grown, has kept a more working-class character, with more detached houses. This two-sided town, well served by the metro, keeps gaining residents and growing denser, unlike many large cities in the rest of France.