The coordinates of the city are 8°3′S 34°54′W﻿ / ﻿8.050°S 34.900°W . The city Derby province is Sichuan . Derby is located in Magelang, Central Java . +82-53 is the area code of Derby . 850/km 2  (2,200/sq mi) is the density of inhabitents in Derby . The area of the urban region is 335.4 sq mi (539.7 km 2 ) . The water area of the city is 0.37 sq mi (0.95 km 2 ) . The city has the postal code 9XXXXXX . The mayor of Derby is Kakha Kaladze . The land area of the city is 225.73 sq km  (87.15 sq mi) . The demonym of the city Derby is Santiaguinos  (- as ) . The city was incorporated in 1799 (Guyandotte) . The density of  people in  the urban region of Derby is 7,500/km 2  (19,000/sq mi) . This city is named after Rao Jodha . The lowest elevation of Derby is 620 ft . 68.17 sq mi (176.56 sq km) is the area of the city namedDerby . Derby is at an elevation of 6 m . The highest elevation of Derby is 91 m (299 ft) . The density of  residents in  the metro region of Derby is 2,200/km 2  (5,700/sq mi)
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