Community History Organizations
- 87th Pennsylvania Volunteers, Company C
- African American Historical Preservation Society
- Codorus Valley Area Historical Society
- Crispus Attucks
- Daughters of American Colonists (See national website local chapter info)
- The Peach Bottom Chapter – Delta
- Diggs Choice Chapter – Hanover
- The Barrens Chapter – Stewartstown
- Dallastown Area Historical Society
- Daughters of the American Revolution:
- Daughters of Union Veterans Civil War, Mammy Ruggles Tent No. 50
- Delta Welsh Heritage
- East Berlin Historical Preservation Society
- Emigsville Heritage Project
- Farm and Natural Lands Trust
- Friends of Camp Security
- Friends of the Heritage Rail Trail Corridor
- Friends of the Stewartstown Railroad
- Friends of Wallace Cross Mill
- German American Society of York: Alpenrose
- Glen Rock Historic Preservation Society
- Greater Dover Historical Society
- Hanover Area Historical Society
- Heritage Rail Trail County Park
- Historic Wrightsville
- Historic York, Inc.
- Indian Steps Museum (Conservation Society of York County; includes Wills School and Codorus Furnace)
- Kreutz Creek Valley Preservation Society
- Lower Windsor Area Historical Society
- Manchester Township Historical Society
- Maryland & Pennsylvania Railroad Historical Society
- Maryland & Pennsylvania Railroad Preservation Society
- New Freedom Heritage
- North Eastern York County History in Preservation
- Northern Central Railway of York
- Northern York County Historical & Preservation Society – Old Line Museum
- Pennsylvania Bottle Collectors Association
- Pennsylvania Dutch Heritage Group: (717) 266-2134
- Pennsylvania Room at Guthrie Memorial Library
- Police Heritage Museum
- Preserving York
- Red Lion Area Historical Society
- Rivertownes PA
- Sons of the American Revolution, Continental Congress Chapter
- Sons of Union Veterans of the Civil War, Capt. Edgar M. Ruhl Camp No. 33
- South Central Pennsylvania Genealogical Society
- Spring Grove Area Historical Preservation Society
- Springettsbury Township Historic Preservation
- Stewartstown Historical Society
- Stewartstown Railroad
- Susquehanna National Heritage Area
- Susquehanna Trails Genealogy Club
- Teaching Museum for Fiber Arts and Textiles
- Wallace Cross Mill Historic Site
- Wellsville Area Historical Society
- West Manchester Township Historical Society
- William C. Goodridge Freedom Center
- York African American Historical Preservation Society
- York City Parks and Recreation Bureau
- York Civil War Round Table
- York County Archives
- York County Planning Commission
- York County Rail Trail Authority
- York Family History Center
- York Time Institute
- York Twinning Association
