Cuyahoga County (/ˌkaɪ.əˈhɒɡə/ or /ˌkaɪ.əˈhoʊɡə/) is a large urban county located in the northeastern part of the U.S. state of Ohio. It is situated on the southern shore of Lake Erie, across the U.S.–Canada maritime border. As of the 2020 census, its population was 1,264,817, making it the second-most-populous county in the state.