Whitewater Township is one of the twelve townships of Hamilton County, Ohio, United States. The population was 6,375 as of the 2020 census. It is the only Whitewater Township statewide. No municipalities are located in Whitewater Township, although four unincorporated census-designated places lie in the township: Elizabethtown in the southwest, Hooven i…Whitewater Township is one of the twelve townships of Hamilton County, Ohio, United States. The population was 6,375 as of the 2020 census. It is the only Whitewater Township statewide. No municipalities are located in Whitewater Township, although four unincorporated census-designated places lie in the township: Elizabethtown in the southwest, Hooven in the southeast, Blue Jay in the north, and Miamitown in the east.