Mariposa was a town located south of Hill Valley in 2015. It could be seen on a map in the Courthouse Square.

Behind the scenes[]

It is likely the same Mariposa as an existing one in California. Back to the Future Part III was filmed primarily in Tuolumne County, California, at a location six miles west of the ghost town of Chinese Camp, California. Mariposa, the county seat of Mariposa County, is roughly 45 miles southeast.