Lamar County is in Coastal Mississippi. Of the 82 counties in the Magnolia State, 319,996-acre Lamar County ranks 52nd by size. The most common type of land for sale by combined acreage in Lamar County is residential property. Browse all waterfront property for sale in Lamar 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!