The following are Mennonite Churches formed in Lancaster County in the 18th Century, listed with their year or approximate year of formation. They are listed in order of formation.
Willow Street (Herr & Brick) Church, West Lampeter Twp. 1719 Hershey's Church, Lancaster Twp. (no longer exists) ca.1730-1791 Strasburg Church, Strasburg Twp. 1740 Byerland Church, Pequea Twp. ca.1747 Landisville Church, East Hempfield Twp. 1752 Groffdale Church, West Earl Twp. 1755 New Danville (Stone) Church, Pequea Twp. 1755 Millersville Church, Millersville Borough 1757 Habecker Church, Manor Twp. ca.1760 Masonville (Bachman & Herr) Church, Manor Twp. ca.1760 Risser Church, Mount Joy Twp. 1760 Hernley (Lehman) Church, Rapho Twp. 1766 Weaverland Church, East Earl Twp. 1766 New Providence (Black Horse) Church, Providence Twp. 1766 Mellinger Church, East Lampeter Twp. 1767 Rivercorner (Eshelman & Miller) Church, Conestoga Twp. ca.1774 Chestnut Hill Church, West Hempfield Twp. 1790 Rohrestown (Brubaker) Church, East Hempfield Twp. 1791 Bowmansville Church, Brecknock Twp. 1794 Erb Church, Penn. Twp. 1794 Erisman Church, Rapho Twp. 1798
Source: Taken from Churches and Cemeteries of Lancaster County, Pennsylvania, A Complete Guide, by A. Hunter Rineer, Jr.