St. Hilaire is a city in section 6 of River Falls Township in Pennington County, Minnesota, United States. The population was 273 at the 2020 census. St. Hilaire was platted in 1882 and incorporated as a village on the auspicious date of July 4, 1883. Also on that date, St. Hilaire had rail service for the first time, as the Great Northern Railway opened a branch line from Crookston, Minnesota through Shirley, seven miles north of Crookston, Dorothy and Ives Station, to St. Hilaire.