The city of Colleyville was founded in 1956, and has a city council-city manager form of government. The City Charter was initially adopted in 1976, and updated in 2005, by the voters. The city is governed by a seven-member city council, composed of a mayor and six councilmembers, all elected at large.
The council-manager form is the system of local government that combines the strong political leadership of elected officials in the form of a council or other governing body, with the strong managerial experience of an appointed local government manager. The form establishes a representative system.