The municipal government of King, Ontario consists of the mayor and six councillors who are elected to office during the municipal elections in Ontario or who are acclaimed to office because their candidacy is unopposed. It also includes civic staff responsible for the operational affairs of the township.
A ward system was proposed by William Hodgson during a speech he delivered at the township's electoral nomination meeting on 20 November 1961.
The municipality is subdivided into six geopolitical wards. Ward 1 encompasses the region east of Keele Street and west of Bathurst Street, from the township's southern boundary to 19th Sideroad in the north. This includes the eastern portion of King City, and the communities of Eversley, Snowball, and Temperanceville. Ward 2 extends from Highway 400 in the east to 10th concession in the west, from the township's southern boundary to 15th sideroad in the north. It includes the communities of King Creek, Laskay, Nobleton, and Strange. Ward 3 covers all the western portion of the township, from its western border to the 10th concession, and also all the area east of Highway 400 that lies north of the 15th Sideroad and south of the 18th Sideroad. The communities of Hammertown, Happy Valley, Holly Park, Linton, and New Scotland are located in ward 3.
Ward 4 consists of the area east of the 10th concession and west of Highway 400, north of the 18th sideroad, and south the northern boundary of the township at its western end and of Highway 9 at its eastern end. It includes the communities of Lloydtown, Pottageville, and Schomberg. Ward 5 extends from the township's southern boundary to 19th Sideroad in the north, between Highway 400 in the west and Keele Street in the east. The western portion of King City and the communities of Kettleby and Kinghorn are located in ward 5. The northeastern portion of the township, north of Highway 9 west of Highway 400, and north of the 19th Sideroad east of Highway 400, is in ward 6. It includes the communities of Ansnorveldt and Glenville.