The city land area is 8.921 sq mi (23.106 km 2 ) . On February 17, 1909 the city was incorporated . The highest elevation of Cincinnati, Ohio is 424 m (1,391 ft) . 8,600/km 2  (22,000/sq mi) is the density of inhabitents in  the urban region of Cincinnati, Ohio . Cincinnati, Ohio is at an elevation of 700 ft . The Cincinnati, Ohio citys' lowest elevation is 1,750 m . The density of  people in  the metro region of Cincinnati, Ohio is 662.1/km 2  (1,715/sq mi) . The coordinates of the city are 9°1′48″N 38°44′24″E﻿ / ﻿9.03000°N 38.74000°E .  The city area code is 216  (Asian side) . The demonym of the city Cincinnati, Ohio is Brasiliense . The postal code of the city is 130000 . The city water area is 6.80 sq mi (17.62 sq km )  3.0% . Cincinnati, Ohio is named for Calgary, Mull . The metro region has Populations (2019): 3,731,447 population . The area of the urban region is 584.4 sq mi (1,513.59 km2) . The province of the city Cincinnati, Ohio is Oran Province . The city is 641 km 2  (247.6 sq mi) in area . The density of  inhabitents in Cincinnati, Ohio is 2,818/km 2  (7,300/sq mi) (May 27, 2019) . Cincinnati, Ohio is the government of Bristol City Council . Cincinnati, Ohio is located in Tunisia . Takashi Kawamura is the mayor of Cincinnati, Ohio
There are less than 1635 inhabitents per sq mi in the metro region of Cincinnati, Ohio