Green’s Dictionary of Slang

(Aus.) Canberra, ACT equivalent of bogan n. (1)

2003		Aus. Word Map 🌐 charnie bum someone who is from a lower class area/is uneducated: He's stupid. He is a Charnie Bum.
2003		Aus. Word Map 🌐 There is a suburb in Canberra, Charnwood, some[t]imes referred to a[s] Charnie, which has/had a higher than average public housing population and reputation as being an area populated by less affluent people.