The city water area is 3.73 sq mi (9.67 km 2 ) . The mayor of Cleveland, Ohio is Marvin Rees (Lab) . The lowest elevation of Cleveland, Ohio is 2,838 ft . 1,600/km 2  (4,200/sq mi) is the density of residents in  the metro region of Cleveland, Ohio . The density of  residents in Cleveland, Ohio is 9,821/km 2  (25,436/sq mi) (2017) . The metro region has 3,500,000 (estimated) population . 71 is the area code of Cleveland, Ohio . The coordinates of the city are  31°12′N 29°55′E﻿ / ﻿31.200°N 29.917°E . Area: 418 km2 (161 sq mi) is the area of the city namedCleveland, Ohio . This city is named after Confluence of Grand River and Gunnison River . The demonym of the city Cleveland, Ohio is Mashhadi, Mashadi, Mashdi (informal) . The city was incorporated in 1871 (Huntington) . Cleveland, Ohio is located in Colombia . 14,100/km 2  (37,000/sq mi) is the density of people in  the urban region of Cleveland, Ohio . Cleveland, Ohio is at an elevation of 118 m . The province of the city Cleveland, Ohio is East Java . The Cleveland, Ohio city highest elevation is 770 m (2,530 ft)
Cleveland, Ohio was legally declared as a city in 1799 (Guyandotte)