The combined value of land for sale in Monterey County recently on Land.com was almost $2 billion. This represents 100,000 acres of farms, ranches, and rural real estate for sale in Monterey County. Monterey County ranks 13th based on the total acres of land for sale of all the counties in the El Dorado State. Carmel Highlands had the most land for sale. Based on its natural assets, tourism and recreation are important contributors to the Monterey County economy. Monterey County is the 17th largest county (3,771 square miles) in California. It's located in the Central Coast California region of the state.