The Somerset Amish Settlement, which is located in Somerset County, Pennsylvania, is the second oldest Amish settlement that still exists.
It subsequently declined as families moved on to areas of better farmland, mainly to Lancaster County, Pennsylvania and Somerset County, Pennsylvania in Pennsylvania, where they formed the Lancaster Amish Settlement circa 1760 and the Somerset Amish Settlement in 1772.
This movement to either Lancaster or Somerset resulted in the first major divide in the family tree of the Amish.
The two groups differ not only in dialect (Midwestern vs. Pennsylvania forms of Pennsylvania German) but also in the selection of typical Amish family names.
The Somerset Amish hold Sunday service at meetinghouses, instead of practicing home worship, as almost all other Old Order Amish do.