The 1904-05 season saw the introduction of Kurri Kurri into the senior and junior competitions.
Heddon Greta was another coalfields club to affiliate.
Mr Alfred Johnston donated a silver cup for the senior competition, to be held permanently by any team that won three times or twice in succession. Seven teams contested the senior competition, which was won by Southern Division that finished the season undefeated. Bob Lindsay had an outstanding season with Northern Division scoring 842 runs, including 4 centuries at an average of 105.25.
As part of a revised Country Week format, a Hunter District side played North Sydney in November 1904. The side included L Moore (Western); F Carr, C Irwin, C Talbot, W McLean, S Freeman (Southern); CO(Lochinvar): J Lawrie, H Reynolds (Paterson); N Ebsworth and W Cameron (Scone). The team's performance was disappointing, with North Sydney scoring 472 to the Hunter District's 123 and 6 for 131. The Mercury reported that "the batsmen appeared to have been beaten by the reputation of the North Sydney men".
During Country Week a meeting of country representatives recommended to the NSWCA that in future all matches against English touring teams be eleven a side and that such matches be arranged by the NSWCA.
At Easter a team from the New England district paid a return visit following on the HRDCA tour of the previous season.
The Annual Meeting noted with regret the death of the Venerable Archdeacon Tyrrell who had held the position of Patron since the formation of the Association. Mr John Rourke was elected as the new patron. It was also regretted that John Kerrigan, the foundation Secretary and "one of the most active and indefatigable workers" on the Association's committee, was moving to north Queensland on medical advice.