Euclid is a city in Cuyahoga County, Ohio, United States. Located on the southern shore of Lake Erie, it is an inner ring suburb of Cleveland. The population was 49,692 at the 2020 census, making it the fourth largest city in Cuyahoga County.

Cuyahoga County is a large urban county located in the northeastern part of the U.S. state of Ohio. The county seat and largest city is Cleveland. As of the 2020 census, its population was 1,264,817, making it the second-most populous county in the state.