Of 10 counties in the Granite State, Merrimack County ranks fourth in terms of size (954 square miles). Merrimack County is in Central New Hampshire. There is about 1,000 acres of lakefront land and property for sale in New Hampshire's Merrimack County based on recent Land Network data. The combined market value of farmsand rural real estate for sale here is roughly $200,000. Browse all waterfront property for sale in Merrimack County on the Land Network to find the marina, lakefront and other recreational property that meets your needs, from waterside land perfect as a retirement investment to existing residential waterfront land and property for hunting, fishing and other outdoor-recreation pursuits! The most common type of land for sale by combined acreage in Merrimack County is residential property.