Anabaptist groups, year began, and members

The four major Anabaptist groups which came out of the Protestant Reformation include:

Mennonites, started in 1525
Hutterites, started in1528
Amish, started in1693
Brethren, started in 1708

Today, adult members of these groups in the U.S. number:

Mennonites – 231,700
Brethren – 212,100
Amish – 86,900
Hutterites – 7,100

Worldwide, these groups together include over a million adult members.