Local Government Councils

County Councils

Hawkesbury River County Council

Local Councils

Gosford City Council
Hawkesbury City Council
Pittwater Council
The Council of the Shire of Baulkham Hills
The Council of the Shire of Hornsby

Regional Organisations of Councils

Central Coast Regional Organisation of Councils
Northern Sydney Regional Organisation of Councils (NSROC)
Sydney Coastal Councils Group
Western Sydney Regional Organisation of Councils (WSROC)

That said a number of other LGA's enter the Hawkesbury Region including Blue Mountains, Ku-ring-gai, Penrith and Warringah.