The total value of land for sale in Suffolk County recently on Land.com was nearly $1 million. This represents approximately 100,000 acres of farms and rural land for sale in Suffolk County. Suffolk County ranks 14th in the Bay State based on the combined acreage of land for sale among the 14 counties in the Bay State. Of all farms, hunting land and other rural land and acreage for sale in Suffolk County, Boston had the most land for sale. Suffolk County is Massachusetts's 14th largest county (120 square miles). It's located in the Northeast Massachusetts region of the state.