In 1894, he married Marie-Anne Élisabeth Élisa Bernardette Roberge. Pelletier served as mayor for La Prairie in 1904. He was also co-founder of the St. Lawrence Brick company (Briqueterie Saint-Laurent).[3] Pelletier was bâtonnier for the Montreal bar from 1920 to 1921.[4]
Louis-Siméon Morin, a cousin on his father's side, served as a member of the legislative assembly for the Province of Canada.
Louis Conrad Pelletier died at his home in Montreal on June 5, 1929.[5]