The density of  people in  the urban region of Derby is 7,500/km 2  (19,000/sq mi) .  The city area code is +82-53 . The land area of the city is 225.73 sq km  (87.15 sq mi) . 8°3′S 34°54′W﻿ / ﻿8.050°S 34.900°W are the coordinates of the city. . Derby is at an elevation of 20 ft . The water area of the city is 0.37 sq mi (0.95 km 2 ) . The mayor of Derby is Kakha Kaladze . The city has the postal code 9XXXXXX . 335.4 sq mi (539.7 km 2 ) is the area of the urban region of Derby . The city Derby demonym is Santiaguinos  (- as ) . Derby is located in Magelang, Central Java . The Derby citys' lowest elevation is 190 m  . The density of  residents in  the metro region of Derby is 2,200/km 2  (5,700/sq mi) . Derby is named for Rao Jodha . The city province is Sichuan . The city was incorporated in 1799 (Guyandotte) . The density of  residents in Derby is 850/km 2  (2,200/sq mi) . 68.17 sq mi (176.56 sq km) is the area of the city namedDerby . The highest elevation of Derby is 91 m (299 ft)
The location of the city is  longitude by 59.33806°N latitude