Dee Why is within the Northern Beaches Council local government area, and is home to the Warringah Civic Centre built in 1973, which contains the Council Chambers and is situated just to the north of the Sulman Award-winning Library, completed in 1966. Formerly split between the A and B Wards of Warringah Council, the suburb is now entirely within the Curl Curl Ward of Northern Beaches Council, returning three councillors.
