[1] When the Anglican Diocese of Grafton was split off in 1914, the remaining portion was renamed Armidale, retaining its legal continuity and its incumbent bishop.

The diocese is theologically conservative and holds to the traditional Anglican beliefs on human sexuality, disapproving same-sex unions.

[3] The diocese includes the regional cities of Tamworth and Armidale and the towns of Glen Innes, Tenterfield, Inverell, Moree, Gunnedah and Narrabri.

On 12 December 2020, the synod of the diocese elected Rod Chiswell, vicar of South Tamworth, as the 8th Bishop of Armidale.

Two Armidale convenors of MOW were Margaret Ann Franklin, sociologist at the University of New England[15] and later Ruth Sturmey Jones.

[17][18] Other advocates for women's ordination have been the long-serving Chancellor of the diocese, Keith Mason,[19] former member and legal advisor for MOW and president of the Appellate Tribunal [20] and Kevin Giles, chaplain at St Mark's chapel, University of New England, Armidale 1975–1980[21] who wrote books and articles from that time advocating for the ordination of women.