Mariposa County, California
Mariposa County ( ) is a county in the U.S. state of California. As of the 2020 U.S. census, the population was 17,131. The county seat is Mariposa. The county lies in the western foothills of the Sierra Nevada, north of Fresno, east of Merced, and southeast of Stockton. The eastern portion of the county encompasses the principal area of Yosemite National Park.
Mariposa County is one of only three counties in California that does not include any incorporated cities, along with Alpine and Trinity counties. The county includes 17 communities recognized as census-designated places for statistical purposes. It has no traffic signals anywhere within its borders.