sentences:  It is bordered by Fountain County to the north; Montgomery County to the northeast; Putnam County to the east; Clay County to the south; and Vigo County to the southwest.The county's western border is defined by the Wabash River; on the west side of the river lies Vermillion County, beyond which is the state of Illinois, less than from Parke County's northwestern corner.The state capital of Indianapolis lies about to the east.