There was a combined nearly $314 million of farms and ranches for sale in Marin County, California, recently on Land.com. The total acreage of all Marin County ranches, farms, hunting land and other rural land and acreage for sale was around 2,000 acres. Marin County ranks 49th in California for the total acreage of land currently advertised for sale. Among cities in Marin County with farms, ranches, hunting land and other land for sale, San Rafael featured the most land for sale. Based on its natural assets, tourism and recreation contribute significant revenue toward Marin County's overall GDP. Marin County is the 48th largest county (828 square miles) in California. It's located in the San Francisco Bay Area California region of California.