Mariposa County is a county in the U.S. state of California. As of the 2010 U.S. Census, the population was 18,251. The county seat is Mariposa. It is located in the western foothills of the Sierra Nevada mountains, north of Fresno, east of Merced, and southeast of Stockton.
PO Box 784 | Street Address: 5100 Bullion Street
Mariposa, California, 95338