montsûrs is a commune of 2,020 people (1999). it is found in the region pays de la loire in the mayenne department in the northwest of france. on 1 january 2017, it was merged with saint-céneré and formed the short-lived commune montsûrs-saint-céneré. montsûrs-saint-céneré was merged with deux-évailles, montourtier and saint-ouën-des-vallons on 1 january 2019, and the new commune took the name of "montsûrs".