According to a press release from the Anglican Church in North America,
"The Anglican Church in North America has 614 congregations in 20 dioceses. More than 200 other congregations are ministry partners with the Anglican Church, including the congregations of The Anglican Mission. The Anglican Church represents more than 100,000 Christians in North America."
This is down by 200 from the more than 800 previously reported, although the number of persons continues at roughly the same 100,000. It would seem that the numbers include those in "ministry partners" groups as well as congregations fully part of ACNA. I am unclear just who, in addition to the Anglican Mission in America churches are ministry partners.
It would appear that the decision by AMiA to withdraw from full membership in ACNA means a a reduction of about one quarter of the congregations of ACNA. With thirty bishops (one for every 3,333 persons) and 614 congregations (one for every 163 persons) ACNA is relying on the effort to find new congregations and people reaching well beyond the world of dissatisfied Anglicans who have been part of The Episcopal Church.
The future of ACNA is now not about being a home for the so called Anglican homeless, but being a church that attracts new never-before Anglicans. They are becoming, in other words, a denomination of their own among those in the cafeteria offerings of North American religions.