There was a total of around $1 billion of farms, rural land, hunting land and other land for sale in Maui County, Hawaii, recently on Land.com. The total acreage of all Maui County land for sale was around 100,000 acres. Maui County ranks second in the state based on the total acres of land for sale of all the counties in Hawaii. Of all locations in Maui County with farms and rural land for sale, Lahaina had the most land for sale. Maui County is one of the ten biggest counties in Hawaii (2,398 square miles, or some 100 percent of the state's total land area). It's located in the Maui Lanai Hawaii region of Hawaii.