Members by County
 
Cambria County

Municipalities
Scalp Level Borough

Cumberland County

Municipalities
Carlisle Borough
Cooke Township
Hopewell Township
Lower Frankford Township
Lower Mifflin Township
Newburg Borough
Newville Borough
North Newton Township
Penn Township (Cumberland Cty.)
Shippensburg Borough
Shippensburg Township
South Newton Township
Southampton Township (Cumberland Cty.)
Upper Frankford Township
Upper Mifflin Township
West Pennsboro Township

School Districts
Big Spring School District
Carlisle Area School District
Shippensburg Area School District
South Middleton School District

Dauphin County

Municipalities
Harrisburg City
Highspire Borough
Paxtang Borough
Penbrook Borough
Reed Township
Steelton Borough
West Hanover Township

School Districts
Harrisburg School District
Steelton-Highspire School District

Franklin County

Municipalities
Orrstown Borough
Shippensburg Borough
Southampton Township (Franklin Cty.)

Juniata County

Municipalities
Beale Township
Delaware Township
Fayette Township
Fermanagh Township
Greenwood Township (Juniata Cty.)
Lack Township
Mifflin Borough
Mifflintown Borough
Milford Township
Monroe Township
Port Royal Borough
Spruce Hill Township
Susquehanna Township
Thompsontown Borough
Turbett Township
Tuscarora Township
Walker Township

School Districts
Greenwood School District
Juniata County School District

Perry County

Municipalities
Blain Borough
Bloomfield Borough (also known as New Bloomfield Borough)
Buffalo Township
Carroll Township
Centre Township
Duncannon Borough
Greenwood Township (Perry Cty.)
Howe Township
Jackson Township
Juniata Township
Landisburg Borough
Liverpool Borough
Liverpool Township
Marysville Borough
Miller Township
Millerstown Borough
New Buffalo Borough
Newport Borough
Northeast Madison Township
Oliver Township
Penn Township (Perry Cty.)
Rye Township
Saville Township
Southwest Madison Township
Spring Township
Toboyne Township
Tuscarora Township
Tyrone Township
Watts Township
Wheatfield Township

School Districts
Greenwood School District
Newport School District
Susquenita School District
West Perry School District

Somerset County

Municipalities
Addison Borough
Addison Township
Confluence Borough
Lower Turkeyfoot Township
Ogle Township
Paint Borough
Paint Township
Ursina Borough
Windber Borough

School Districts
Turkeyfoot Valley Area School District
Windber Area School District