The combined value of land and rural real estate for sale in Mariposa County recently on Land.com was almost $64 million. This represents almost 8,000 acres of land and rural real estate for sale in Mariposa County. Mariposa County ranks 35th out of 58 counties in the state for the combined amount of land currently advertised for sale. Mariposa featured the most land for sale. Based on its natural assets, Mariposa County's economy is dependent on tourism and recreation. Mariposa County is California's 32nd biggest county (1,462 square miles). It's located in the Gold Country California region of the state.