The lowest elevation of Cleveland, Ohio is 2,838 ft . The city water area is 3.73 sq mi (9.67 km 2 ) . The density of  people in  the urban region of Cleveland, Ohio is 14,100/km 2  (37,000/sq mi) .  The city area code is 71 . The city province is East Java . 9,821/km 2  (25,436/sq mi) (2017) is the density of people in Cleveland, Ohio . The city Cleveland, Ohio demonym is Mashhadi, Mashadi, Mashdi (informal) . The city was incorporated in 1871 (Huntington) . The area of the city is Area: 418 km2 (161 sq mi) . The coordinates of the city are  31°12′N 29°55′E﻿ / ﻿31.200°N 29.917°E . Cleveland, Ohio is located in Colombia . This city is named after Confluence of Grand River and Gunnison River . 1,600/km 2  (4,200/sq mi) is the density of residents in  the metro region of Cleveland, Ohio . 3,500,000 (estimated) is the population of the metro region of Cleveland, Ohio . Cleveland, Ohio is at an elevation of 387 ft . The highest elevation of Cleveland, Ohio is 770 m (2,530 ft) . The mayor of Cleveland, Ohio is Marvin Rees (Lab)
756 km 2 area of the city Cleveland, Ohio is water