Green’s Dictionary of Slang

Camp, the n.

1. (Aus.) Sydney.

[Aus](con. 1821) Sun. Times (Sydney) 15 Sept. 21/1: The ageing man who had known the settlement during: its thirty-three years of existence could give his reminiscences of the days when Sydney was only known as ’The Camp’.
[Aus]Baker Aus. Lang. 43: The Sydney settlement became known almost immediately as the Camp; later the term was transferred to the Hobart convict settlement.

2. (Aus.) Hobart.

see sense 1.