La Grange is a small unincorporated community in rural Stanislaus County, California, United States. Its altitude is 249feet. As of 2008 it has a population of 345. It is located at 3739?49?N 12027?49?W? / ?37.66361N 120.46361W? / 37.66361; -120.46361 along the Tuolumne River, and is near the La Grange Dam and the New Don Pedro Dam.