Of 92 counties in the Hospitality State, Martin County is 72nd in terms of its size (340 square miles). Martin County is in South Central Indiana. The total value of nearly 1,000 acres of riverfront land and property recently listed for sale in Martin County, Indiana, was roughly $300,000. Browse all waterfront property for sale in Martin 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 Martin County is undeveloped land.