The Anglican Church in North America (ACNA) has a new website. But if you click on the "Find a Parish" tab under "Connect," and start clicking on the states that make up the Northern Plains, you will find barely ten total congregations.
The Episcopal Church (TEC), longer established as Anglicanism's face here, is small and declining.
In South Dakota, there's not a single ACNA congregation, and the last few years have seen the Episcopal Diocese closing churches while suffering one of TEC's biggest drops in average Sunday attendance.
The numerical picture confirms Sarah Hey's analysis of Anglican futures in North America (emphasis added):
"As I predicted now years ago, liberal TEC will have relatively-speaking thriving parishes on the west coast in urban areas, and in the NE in highly populated urban areas, and one thriving parish in each of the ten major cities in the SE. Alternate Anglican entities will be capable of establishing relatively thriving parishes in the large urban areas like Raleigh, Atlanta, etc, and in a few exceptional pockets like Plano, Texas, Falls Church [VA], etc, etc. The rest of the US, in the rural areas, and in the large patches of fly-over middle America, and in between the two or three massive cities in some industrialized states . . . A wasteland."