|region||Pays de la Loire|
|Community association||Pays de l'Huisne Sarthoise|
|surface||12.53 km 2|
|Residents||389 (January 1, 2017)|
|Population density||31 inhabitants / km 2|
Montmirail is a French municipality with 389 inhabitants (at January 1, 2017) in the department of Sarthe in the region Pays de la Loire ; it belongs to the arrondissement of Mamers and the canton of Saint-Calais .
Montmirail already had a fortified place in Roman times - as Mons Mirabilis. The oldest part of today's castle, however, dates from the 12th century , but most of it was destroyed in the Hundred Years War .
- Castle from the 14th, 15th and 18th centuries
- Notre-Dame-de-l'Assomption church