Forbach Population and Area (Moselle)
Largest city in France 2026: up-to-date figures for Forbach (Moselle)
Forbach: Population and Area
With 20,721 inhabitants (INSEE total population in force on January 1, 2026), Forbach is the 476th most populous town in France in 2026 and the 4th most populous in the Moselle department, out of 725 communes. It covers 16 km² (10,849th largest area in France, 59th largest in the department), with a population density of 1,270 inhabitants per km², or 12 times the national average (110 inhabitants/km²), which ranks it 753rd in France for density.
Forbach is located in the Moselle department (57), in the Grand Est region (formerly Lorraine), where it ranks 22nd by population out of 5,115 communes. The most populous town in the Moselle department is Metz (124,396 inhabitants); the department is home to 1,068,899 people over 6,216 km².
See the full ranking of communes in the Moselle department and the regional ranking: largest city in Grand Est.
Towns of similar size in the Moselle department: Metz (pop. 124,396), Thionville (pop. 43,398), Montigny-lès-Metz (pop. 22,065), Sarreguemines (pop. 20,549), Yutz (pop. 17,680), Hayange (pop. 16,000).
Sources: INSEE, official population figures in force on January 1, 2026 (total population); areas: IGN / Observatoire des territoires; INSEE code 57227. Rankings are calculated across the 34,858 communes of metropolitan and overseas France in our database.