Its origin and largest settlement is Lancaster County, Pennsylvania, United States.
[2] Lancaster affiliation buggies have gray tops.
Lancaster affiliation had 141 church districts in 1991 and 286 in 2010.
[4] In 2011 it was present in eight states in 37 settlements with 291 church districts.
[5] It represents about 15 percent of the Old Order Amish population, that is about 45,000 out of about 300,000 in 2015.