Gosford proclaimed a City o on 1 January 1980 .
Gosford Municipality , Erina Shire and Woy Woy Shire merged and form Gosford Shire and Wyong Shire from 1 January 1947 .
Gosford Shire proclaimed a City o on 1 January 1980 .
Gosford Municipality , Erina Shire and Woy Woy Shire merged and form Gosford Shire and Wyong Shire from 1 January 1947 .