lets have a look at what a city in Australia is, as defined by...

lets have a look at what a city in Australia is, as defined by ABS... Each capital city forms its own Greater Capital City Statistical Area (GCCSA), which according to the AustralianBureau of Statistics (ABS) represents a broad socioeconomic definition of each of the eight state and territory capital cities.

so knowing this, the idea that Forster is a city is seen as a deliberately inaccurate assumption of what a city is.