Of 99 counties in the state, Buchanan County is 48th in terms of its size (573 square miles). Buchanan County is in Eastern Iowa. Recent Land Network data totals 1,000 acres of riverfront property for sale in Iowa's Buchanan County, which is valued at a combined $641,690. Browse all waterfront property for sale in Buchanan 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 Buchanan County is house.