Berea is a city in Cuyahoga County, Ohio, United States. The population was 18,545 at the 2020 census. A western suburb of Cleveland, it is …Berea is a city in Cuyahoga County, Ohio, United States. The population was 18,545 at the 2020 census. A western suburb of Cleveland, it is a part of the Cleveland metropolitan area. Berea is home to Baldwin Wallace University, as well as the training facility for the Cleveland Browns and the Cuyahoga County Fairgrounds.