The twelve largest Mennonite groups are:

Amish groups and some Mennonite groups are known for their adherence to modest fashion styles.

However, as the Mennonite population became urbanized and more integrated into the wider culture, this visible difference has disappeared outside of conservative Mennonite groups.

They stay separate from other Mennonite groups because of their emphasis on the one-true-church doctrine and their use of avoidance toward their own excommunicated members.

As a result, this was the only large Mennonite group that migrated from Russia to North America as a complete congregation.

Most of the churches in the conference movement eventually merged with other Mennonite groups.

A few Mennonite groups do practice shunning, or have in the past.

They are part of the Brethren in Christ Church, a Mennonite group.

It was established in 1947 by a Mennonite group which was one of the founding members of the Missionary Church.

Some joined with previous Mennonite groups, while others formed their own.