The purpose of the Butler County Federated Library System is to operate a system of autonomous public libraries within Butler County to promote, develop and improve library (and informational) services for all County residents.


Butler 724-287-1715
Cranberry 724-776-9100
Evans City 724-538-8695
Mars 724-625-9048

North Trails 724-476-1006

South Butler 724-352-4810
Prospect 724-865-9718
Slippery Rock 724-738-9179
Zelienople 724-452-9330


The Mission of the Cranberry Public Library is to bring delight to the spirit of our community and region by serving as the destination for exploration, enrichment, information, creativity, collaboration, inspiration, and discovery. 

Cranberry Public Library

The mission of the Mars Area Public Library is to inform, educate, entertain and culturally enrich by providing books and library materials, as well as facilities and professional services, for all individuals in our service area.

Mars Area Public Library

North Trails Library is part of the Butler County Federated Library System. Our goal is to always provide quality library service to all residents of northern Butler County Pennsylvania, USA.

North Trails Public Library

How to use the map...

Simply scroll your mouse over the name of a particular library and you will see its location. Then clik on the pinpoint for directions.

How to access a library website...

Below the map...Each library shows a brief description along with a photo fo their website. Simply click on the "VISIT" button to access their website for more information.


The Zelienople Area Public Library serves the communities of Zelienople Borough, Harmony Borough, Lancaster Township and Jackson Township.

Our collection includes over 60,000 items including books, videos, audios, compact discs, magazines and puppets and CD-ROMs.


Zelienople Area Public Library

The Slippery Rock Community Library provides a welcoming environment while connecting people to services, activities and technology to enrich life, foster literacy, inspire curiosity and stimulate imagination.

Slippery Rock Community Library

Located in the heart of Prospect, the Prospect Community Library serves a number of geographic areas, including the Borough of Prospect, the Borough of Portersville, Franklin Township and Muddycreek Township, among other nearby communities. 

Prospect Community Library

Located two blocks from Evans City Main Street, the Evans City Public Library serves Forward Twp., Callery Borough, and Evans City Borough – as well as the students of nearby Evans City Elementary School.

Evans City Public Library
South Butler Community Library

The South Butler Community Library is dedicated to building community connections and providing tools for lifelong discovery. We believe it’s essential to give our patrons access to cutting-edge information in all its formats. 

Butler Area Public Library

The Butler Area Public Library is a community information center with a wide range of resources. We are the headquarters library in the Butler County Federated Library System and serve as the county-wide resource for library services.