Macoupin County is in Central Illinois. Of the 102 counties in the Prairie State, Macoupin County ranks 13th in terms of size (555,296 acres). The most common type of land for sale by combined acreage in Macoupin County is residential property. Browse all waterfront property for sale in Macoupin 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!