Culiacán (Spanish pronunciation: [kulja'kan]) is a city in northwestern Mexico, the largest city in the state of Sinaloa as well as its capital and capital of the municipality of Culiacán. With 675,773 inhabitants in the city (census of 2010), and 858,638 in the municipality, it is the largest city in the state of Sinaloa. The municipality has a total area of 4,758 km2 (1,837 sq mi).
The city is located in a valley at the confluence of the Tamazula and Humaya Rivers, where the two meet to form the Culiacán River, and is located 55 meters above sea level. It is located in the center of the state with almost equal distance to the other urban centers of the state: Los Mochis to the north, and Mazatlán to the south. In addition, Culiacán is the birthplace and base of the Sinaloa Cartel.[1]
Reference: http://en.wikipedia.org/wiki/Culiac%C3%A1n,_Sinaloa