Saint-Hilaire-le-Lierru is a former commune. It is found in the region Pays de la Loire in the Sarthe department in the west of France. On 1 January 2016, it was merged into the new commune of Tuffé-Val-de-la-Chéronne. The commune is 70 to 120 meters above sea-level
The figure below shows the evolution of the population: