Of 102 counties in the Land of Lincoln, LaSalle County ranks fourth in terms of size (1,148 square miles). LaSalle County is in Northern Illinois. The total value of approximately 1,000 acres of riverfront land recently listed for sale in Illinois's LaSalle County was roughly $2 million. Browse all waterfront property for sale in LaSalle 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 LaSalle County is undeveloped land.