Washington County Library System:  14 member libraries      www.washlibs.org

Avella Area Public Library 

Bentleyville Public Library

Burgettstown Community Library

California Area Public Library

Charleroi Area Public Library (formerly John K. Tener Library)

Chartiers-Houston Community Library

Citizens Library (Washington)

Donora Public Library

Frank Sarris Public Library (Canonsburg)

Fredericktown Area Public Library

Heritage Library (McDonald)

Marianna Community Public Library

Monongahela Area Library

Peters Township Library

Greene County Library System: 2 member libraries  https://greenecolib.org 

Eva K. Bowlby Public Library (Waynesburg)

Flenniken Public Library (Carmichaels)

Fayette County Libraries   www.fayettelibraries.org

Brownsville Free Public Library

Carnegie Free Library (Connellsville)

German-Masontown Public Library

Uniontown Library

Dunbar Community Library

Frazier Community Library

Point Marion Public Library

Republic Community Library

Smithfield Public Library