High Quality Content by WIKIPEDIA articles! Tippecanoe County is a county located in the U.S. state of Indiana. As of 2000, the population was 148,955. The county seat is Lafayette.Tippecanoe County is part of the Lafayette, Indiana, Metropolitan Statistical Area.Tippecanoe County was formed March 1, 1826, and named for the anglicization of "Kethtippecanoogi", a Miami term meaning "place of the succor fish people." (Kriebel, Robert C. - Tippecanoe at 2000: A Hoosier County Recalls Its Past). The county is best known for the Battle of Tippecanoe and Purdue University. The Tippecanoe County Courthouse, built in 1881, is on the National Register of Historic Places.