The 2017 Estimated Resident Population for the City of Casey is 326,820,
with a population density of 7.99 persons per hectare.

The City of Casey is located in Melbourne’s south-eastern suburbs, between 28 and 60 kilometres south-east of the Melbourne CBD.

The City of Casey is bounded by the City of Knox and the Yarra Ranges Council area in the north, Cardinia Shire in the east, Western Port and Mornington Peninsula Shire in the south, and Frankston City and the City of Greater Dandenong in the west. The City of Casey’s boundaries are Police Road, Churchill National Park, West Boundary Track, Horswood Road and Boundary Road in the north, Cardinia Creek, McCormacks Road, Pound Road, Tooradin Station Road, Hardys Road and Dalmore Road in the east, the Western Port coastline and South Boundary Road East in the south, and Western Port Highway, South Gippsland Highway, South Gippsland Freeway, Princes Highway, Claredale Road and the Dandenong Creek in the west.Cranbourne is ideally situated just a short drive away from the many coastal attractions of the Mornington Peninsula and Western Port, as well as being on the main route from Melbourne to Phillip Island