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