Mariposa County (/ˌmærɪˈpoʊzə, -sə/ ) is a county located in the U.S. state of California. As of the 2020 U.S. census, the population was 17,131. 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. The eastern part of the county is the principal area of Yosemite National Park.
Mariposa County is one of only three counties in California that does not include any incorporated cities (with Alpine and Trinity counties being the other two). The county does include, however, 17 communities that are recognized as census-designated places for statistical purposes. It also has the distinction of not having any permanent traffic signals anywhere in the county.
