Cleveland Heights is a city in Cuyahoga County, Ohio, United States, a suburb of Cleveland. The city's population was 46,121 at the 2010 census. According to the United States Census Bureau, the city has a total area of 8.1 square miles (21km2), of which 0.04 square miles (0.10km2), or 0.25%, is water. Cleveland Heights is mostly within the Dugway Brook Watershed. The area that is now Cleveland Heights was settled by Euro-American farmers later than most of Cuyahoga County. The first road through what is today the city, Mayfield Road, was not built until 1828. Besides farms the area also had quarries in the 19th century.