(double the original estimate). Gallery Sister cities Lafayette has two sister cities as designated by Sister Cities International. Longkou, Shandong, China Ōta, Gunma, Japan (October 1993) References External links City of Lafayette, Indiana website Lafayette Online Cities in Indiana Populated places established in 1825 Cities in Tippecanoe County, Indiana County seats in Indiana Lafayette metropolitan area, Indiana 1825 establishments in Indiana Gilbert du Motier, Marquis de Lafayette