2,300/km 2  (6,100/sq mi) is the density of people in  the urban 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 mayor of Derby is Ravinder Bhalla (term ends December 31, 2021) . Derby is the government of National Park Service . The density of  residents in  the metro region of Derby is 4,484/km 2  (11,610/sq mi) . The city has the postal code 21500 . The land area of the city is 39.28 sq mi (101.74 km 2 ) . (0)2 is the area code of Derby . The lowest elevation of Derby is 190 m  . Area: 2,768 km2 (1,068.7 sq mi) is the area of the metro region of Derby . The city province is Razavi Khorasan . The coordinates of the city are 12°8′11″N 86°15′5″W﻿ / ﻿12.13639°N 86.25139°W . This city is named after Society of the Cincinnati . The urban region is 335.4 sq mi (539.7 km 2 ) in area . The area of the city is 89.63 sq mi (232.14 km 2 ) . The demonym of the city Derby is Indori . The density of  inhabitents in Derby is 280/km 2  (740/sq mi) . Derby is at an elevation of 2250 m
The city is at a height of 2250 m