8°3′S 34°54′W﻿ / ﻿8.050°S 34.900°W are the coordinates of the city. . Kakha Kaladze is the mayor of Derby . Derby is named for Rao Jodha . The density of  people in  the urban region of Derby is 7,500/km 2  (19,000/sq mi) . The city province is Sichuan . The area of the urban region is 335.4 sq mi (539.7 km 2 ) . On 1799 (Guyandotte) the city was incorporated . The land area of the city is 225.73 sq km  (87.15 sq mi) .  The city area code is +82-53 . The city has the postal code 9XXXXXX . 850/km 2  (2,200/sq mi) is the density of inhabitents in Derby . The area of the city is 68.17 sq mi (176.56 sq km) . The lowest elevation of Derby is 190 m  . The Derby city highest elevation is 91 m (299 ft) . 2,200/km 2  (5,700/sq mi) is the density of residents in  the metro region of Derby . Derby is located in Magelang, Central Java . Derby is at an elevation of 6 m . The city Derby demonym is Santiaguinos  (- as ) . The city water area is 0.37 sq mi (0.95 km 2 )
There are less than 5645 inhabitents per sq mi in the metro region of Derby