Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Peoria Heights is a village lying almost entirely in Peoria County in the U.S. state of Illinois. The population was 6,635 at the 2000 census. Peoria Heights is a suburb of Peoria and is surrounded by the city except for its eastern boundary on Peoria Lake, a relatively wider section of the Illinois River. It is part of the Peoria, Illinois Metropolitan Statistical Area.Topographically, the village can be roughly divided into three zones. The Illinois River floodplain, the bluff, and the plateau. While its eastern border is fairly regular with the river's edge, the rest of its municipal border, with Peoria, is quite irregular and convoluted.