Alameda County is in San Francisco Bay Area California. Of the 58 counties in the Land of Milk and Honey, 821-square-mile Alameda County ranks 49th by size. Recent listings of residential land for sale in California's Alameda County totals almost 10,000 acres and a combined market value of about $40 million. The most common type of land for sale by combined acreage in Alameda County is house. The average price of residential land for sale in Alameda County was $3 million. Browse all residential land and rural property for sale in California to find residential land and properties that suit your lifestyle needs, from existing residential homes and estates to land ready for future residential-property development.