Williston is an unincorporated community in northern Allen Township, Ottawa County, Ohio, United States, located along State Route 579. It is located in the northwestern part of the state, near Toledo. Its ZIP code is 43468. Its population was 211 people, according to the 2000 Census. The town received regional attention with the arraignment of a local bank robbery suspect from Williston, accused of robbing the Genoa Banking Company's Millbury branch, in federal court.
Local teenagers attend Genoa Area High School.