There are a number of towns in Australia with double names, Kurri Kurri is one of them.
Here is a list of most of the others ...
Ban Ban
Baw Baw
Beggan Beggan
Bli Bli
Bong Bong
Book Book
Boonoo Boonoo
Bungle Bungle
Curl Curl
Gin Gin
Gingin,
Gol Gol
Grong Grong,
Joel Joel
Ki Ki
Kin Kin
Kurri Kurri
Lang Lang
Marramarra
Mia Mia,
Millaa Millaa
Mitta Mitta
Mona Mona
Mooney Mooney,
Nar Nar Goon
Nowa Nowa
Terrick Terrick
Terry Hie Hie
Tilba Tilba
Wagga Wagga
Walla Walla
Wangi Wangi
Woy Woy
Wujal Wujal
I don't know whether it is OK to call "Kurri Kurri", "Kurri".
But I know you CAN'T call "Woy Woy", "Woy",
but you CAN call "Wagga Wagga", Wagga and you CAN call "Tilba Tilba", "Tilba".