Disincorporated

A municipal corporation is the legal term for a local governing body, including (but not necessarily limited to) cities, counties, towns, townships, charter townships, villages, and boroughs. The term can also be used to describe municipally-owned enterprises.

Municipal incorporation occurs when such municipalities become self-governing entities under the laws of the state or province in which they are located. Often, this event is marked by the award or declaration of a municipal charter. A city charter or town charter (generically, municipal charter) is a legal document establishing a municipality such as a city or town. The concept developed in Europe during the Middle Ages and is considered to be a municipal version of a constitution. With the notable exceptions of the City of London Corporation and the Laugharne Corporation, the term has fallen out of favour in the United Kingdom, but the concept remains central to local government in the United Kingdom, as well as former British colonies such as Canada and India.

In Canada charters are granted by provincial authorities.

The Corporation of Chennai is the oldest Municipal Corporation in the world outside UK.

The title "corporation" was used in boroughs from soon after the Norman conquest until the Local Government Act 2001. Under the 2001 act, county boroughs were renamed "cities" and their corporations became "city councils"; other borough corporations were renamed "borough councils". Prior to 2001 "city council" or "borough council" referred only to the elected councillors as an assembly, while the "corporation" was the corporate body over which the council presided.

...
Wikipedia