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Members of this conservative Christian faith came to Pennsylvania in the early 18th century to escape persecution in Europe for their Anabaptist beliefs. The Pennsylvania Amish community in Lancaster County is the oldest and largest Amish community in the United States, numbering about 30,000. The population has more than doubled in size in the past 20 years. The Amish have their roots in the Mennonite community.
In 1992, the church had 128,000 members; today, more than double that, with an estimated population of 282,000. The Pennsylvania numbers fell, particularly in Lancaster County, home to the country's second-largest Amish settlement, largely because the community outgrew the region, Kraybill and Nolt said.