La Grange is a small unincorporated community in rural Stanislaus County, California, United States. Its altitude is 249 feet. As of 2008 it has a population of 345. It is located at 37°39′49″N 120°27′49″W / 37.66361°N 120.46361°W / 37.66361; -120.46361 along the Tuolumne River, and is near the La Grange Dam and the New Don Pedro Dam.