Congregational Churches existed in all states and territories of Australia at some time.

The oldest Congregational Church was founded in Hobart in 1830 by Frederick Miller.

One of the earliest and most influential Congregational ministers in early times was Thomas Q. Stow, who built the first church in South Australia.

The Union dissolved in 1977 when the Uniting Church in Australia was formed.

260 of the congregations that had previously formed the Union joined the new Uniting Church.