Cuyahoga Falls is a city in Summit County, Ohio, United States. As of the 2020 census, the city population was 51,114. The second-largest city in Summit County, it is located directly north of Akron and is a suburb of the Akron metropolitan area. The city was founded in 1812 by William Wetmore and was originally named Manchester, but renamed for the Cuyahoga River and the series of waterfalls that run along the southern boundary of the city.

Summit County is an urban county in the U.S. state of Ohio. As of the 2020 census, the population was 540,428, making it the fourth-most populous county in Ohio. Its county seat and largest city is Akron. The county was formed on March 3, 1840, from portions of Medina, Portage and Stark Counties. It was named Summit County because the highest elevation on the Ohio and Erie Canal is located in the county.