State Route 91, formerly known as Inter-county Highway 91 until 1921 and State Highway 91 in 1922, is a north–south state highway in the northeastern portion of the U.S. state of Ohio. Its southern terminus is at U.S. Route 224 in Springfield Township, east of Akron. Its northern terminus is at State Route 283 on the Timberlake/Eastlake border less than one mile (1.6 km) south of Lake Erie.

Tallmadge is a city in eastern Summit County, Ohio, United States, with a small district in neighboring Portage County. It is a suburb of Akron and part of the Akron metropolitan area. The population was 18,394 at the 2020 census. Tallmadge was founded in 1807 and is the second-oldest city in Summit County, following Hudson, which was founded in 1799.