The postal code of the city is 16000 . 1,352.5/km 2  (3,527/sq mi) is the density of people in  the metro region of Dallas, Texas .  The city area code is (+90) 224 . Dallas, Texas is named for Calgary, Mull . Dallas, Texas is at an elevation of 0 meters . The land area of the city is 5.39 sq mi (13.96 km 2 ) . Dallas, Texas is the government of Municipality of Quito . The city was incorporated in November 7, 1861, as Denver City, C.T. . The city water area is 4.12 sq mi (10.67 km 2 ) . The density of  people in Dallas, Texas is 17,000/km 2  (43,000/sq mi) . The Dallas, Texas citys' lowest elevation is 620 ft . 3,423/km 2  (8,870/sq mi) is the density of people in  the urban region of Dallas, Texas . The city Dallas, Texas demonym is Caleño . The coordinates of the city are 25°25′S 49°15′W﻿ / ﻿25.417°S 49.250°W . The Dallas, Texas city highest elevation is 33 m (108 ft) . Dallas, Texas is located in Flathead County & Glacier County, Montana, United States . The area of the city is 68.17 sq mi (176.56 sq km) . The city Dallas, Texas province is Jilin . Armand Béouindé (since 2016) is the mayor of Dallas, Texas . The urban region has 3,384,569 population
+374 10 is a prefix required to call a number in Dallas, Texas