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