The Derby citys' lowest elevation is 620 ft . The density of  residents in  the metro region of Derby is 4,484/km 2  (11,610/sq mi) . The urban region is 335.4 sq mi (539.7 km 2 ) in area . The density of  residents in  the urban region of Derby is 2,300/km 2  (6,100/sq mi) . The land area of the city is 39.28 sq mi (101.74 km 2 ) . Derby is the government of National Park Service . Derby is at an elevation of 7380 ft . The area of the city is 89.63 sq mi (232.14 km 2 ) . The density of  inhabitents in Derby is 280/km 2  (740/sq mi) . Ravinder Bhalla (term ends December 31, 2021) is the mayor of Derby . Area: 2,768 km2 (1,068.7 sq mi) is the area of the metro region of Derby . On December 23, 1814 (village) the city was incorporated . Derby is located in Miami-Dade, Monroe, & Collier counties, Florida, United States .  The city area code is (0)2 . The city Derby demonym is Indori . The coordinates of the city are 12°8′11″N 86°15′5″W﻿ / ﻿12.13639°N 86.25139°W . The postal code of the city is 21500 . The province of the city Derby is Razavi Khorasan . Derby is named for Society of the Cincinnati
There are less than 4724 people per km 2 in the metro region of Derby