Lyndhurst is a city in Cuyahoga County, Ohio, United States, and an eastern suburb of Cleveland. The population was 14,001 at the 2010 census. A small part of Lyndhurst was originally part of Mayfield Township.GeographyLyndhurst is located at . It is bordered by South Euclid, Richmond Heights, Highland Heights, Mayfield Heights, Pepper Pike, and Beachwood.According to the United States Census Bureau, the city has a total area of 4.44sqmi, of which 4.43sqmi is land and 0.01sqmi is water.HistoryThe land currently comprising Lyndhurst was part of the Western Reserve, obtained via treaty with the Iroquois tribe in 1796 by the Connecticut Land Company. In 1797, Moses Cleaveland named the area east of the Cuyahoga River Euclid, after the Greek Mathematician and Patron Saint of surveyors. Euclid Township was officially formed in 1809. Despite this, Lyndhurst’s population consisted mostly of Native American Indians until after the War of 1812.