The city Cincinnati, Ohio province is Liaoning . The lowest elevation of Cincinnati, Ohio is 1,750 m .  The city area code is 242 . Cincinnati, Ohio is the government of Kamloops City Council . The city is 178.46 km 2  (68.90 sq mi) in area . 5,496.31 km 2  (2,122.14 sq mi) is the area of the metro region of Cincinnati, Ohio . Cincinnati, Ohio is named for Christopher Columbus . On July 22, 1882 the city was incorporated . The water area of the city is 28.08 km 2  (10.84 sq mi) . The density of  inhabitents in Cincinnati, Ohio is 4,062/km 2  (10,523/sq mi) . The highest elevation of Cincinnati, Ohio is 1,879 m (6,165 ft) . The density of  inhabitents in  the urban region of Cincinnati, Ohio is 2,305/km 2  (5,970/sq mi) . The coordinates of the city are  31°12′N 29°55′E﻿ / ﻿31.200°N 29.917°E . Cincinnati, Ohio is located in Miami-Dade, Monroe, & Collier counties, Florida, United States . Cincinnati, Ohio is at an elevation of 320 m . The city land area is 14.794 sq mi (38.316 km 2 ) . The postal code of the city is 207, 208, 220 - 224, 226 - 228, 231 - 239, 241 - 244, 247 - 249, 251 - 253 . The urban region has 3,039,444 population . Ken Christian is the mayor of Cincinnati, Ohio . 2,200/km 2  (5,700/sq mi) is the density of residents in  the metro region of Cincinnati, Ohio
+57 4 is a prefix required to call a number in Cincinnati, Ohio