Prior to 1990 local government was administered by the Saint George East County Council, Saint George West County Council, the Port of Spain City Corporation and the Couva-Tabaquite-Talparo, the Diego Martin, San Juan-Laventille and Tunapuna-Piarco Regional Corporations.
Prior to 1990 local government was administered by the Saint George East County Council, Saint George West County Council, the Port of Spain City Corporation and the Arima Borough Corporation. After 1990, areas formerly administered by the Saint George East and West County Councils were divided between the Couva-Tabaquite-Talparo, the Diego Martin, San Juan-Laventille and Tunapuna-Piarco Regional Corporations.