Northumberland County, New South Wales

Northumberland County, New South Wales was one of the original Nineteen Counties in New South Wales and is now one of the 141 Cadastral divisions of New South Wales. It included the area to the north of Broken Bay, including Lake Macquarie and Newcastle. It was bounded by the part of the Hawkesbury River to the south, the Macdonald River to the south-west, and the Hunter River to the north.

Northumberland County was named after the English Northumberland, and named by Lieutenant Charles Menzies (commandant), commandant at Newcastle, about 1804.

In 1852 it had an area of 1,498,060 acres and population of 15,207, and was described as being 68 miles long and 53 miles wide and the main coal region of the colony.

Between 21st July 1948 and 19 December 1963, the county had a local government, the Northumberland County Council, which was abolished at the same time as the Cumberland County Council.

Parishes within this county
A full list of parishes found within this county; their current LGA and mapping coordinates to the approximate centre of each location is as follows: