There was a combined around $153 million of farmsand rural real estate for sale in Rhode Island's Providence County recently on Land.com. The total acreage of all Providence County farms, rural land, hunting land and other land for sale was nearly 7,000 acres. Providence County ranks second based on the total amount of acres of land for sale of all the counties in the Ocean State. Smithfield featured the most land for sale. Providence County is one of the ten biggest counties in Rhode Island (435 square miles). It's located in the North Rhode Island region of Rhode Island.