Note: The Butler County Federated Library System operates a system of autonomous public libraries within Butler County, including the Butler Area Public, Cranberry Public, Evans City Public, Mars Area Public, North Trails Public, Prospect Community, Slippery Rock Community, South Butler Community and Zelienople Area Public libraries.

Address: 218 N. McKean St., Butler, PA 16001

Phone: 724-283-1880

Website: www.bcfls.org

Hours: 9 a.m. to 8 p.m. Monday to Thursday; 9 a.m. to 5 p.m. Friday; 9 a.m. to 4 p.m. Saturday; closed Sunday

Address: 218 N. McKean St., Butler, PA 16001

Phone: 724-287-1718

Website: www.butlerlibrary.info

Hours: 10 a.m. to 8 p.m. Monday to Thursday; 10 a.m. to 5 p.m. Friday and Saturday; closed Sunday

Address: 2525 Rochester Road, Suite 300, Cranberry Township, PA 16066

Phone: 724-776-9100

Website: www.cranberrytownship.org/2839/Library

Hours: 10 a.m. to 6 p.m. Monday to Thursday; Friday 10 a.m. to 4 p.m.; Saturday, 9 a.m. to 5 p.m.; closed Sunday

Address: 204 S. Jackson St., Evans City, PA 16033

Phone: 724-538-8695

Website: www.evanscitylibrary.org

Email: evanscity@bcfls.org

Hours: 10 a.m. to 7 p.m. Monday to Thursday; 10 a.m. to 3 p.m. Friday; 10 a.m. to 2 p.m. Saturday in summer and 9 a.m. to 4 p.m. in fall and winter; closed Sunday

Address: 107 Grand Ave., P.O. Box 415, Mars, PA 16046

Phone: 724-625-9048

Website: www.marsarealibrary.org

Hours: 10 a.m. to 5 p.m. Monday; 1 to 7 p.m. Tuesday and Wednesday; 10 a.m. to 7 p.m. Thursday; closed Friday to Sunday

Address: 1553 W. Sunbury Road, West Sunbury, PA 16061

Phone: 724-476-1006

Website: www.northtrailslibrary.org

Hours: 10 a.m. to 7 p.m. Monday; 10 a.m. to 5 p.m. Tuesday and Wednesday; 10 a.m. to 7 p.m. Thursday; 10 a.m. to 5 p.m. Friday and Saturday; closed Sunday

Address: 357 Main St., Prospect, PA 16052

Phone: 724-865-9718

Website: www.prospectlibrary.org

Email: prospectlibrary@bcfl.org

Hours: 10 a.m. to 6:30 p.m. Monday, Tuesday and Thursday; 10 a.m. to 8 p.m. Wednesday; 10 a.m. to 2:30 p.m. Saturday; Friday and Sunday, closed

Address: 465 N. Main St., P.O. Box 25, Slippery Rock, PA 16057

Phone: 724-738-9179

Website: www.slipperyrocklibrary.org

Email: srcl@bcfls.org

Hours: 10 a.m. to 7 p.m. Monday to Thursday; 10 a.m. to 5 p.m. Friday and Saturday; closed Sunday

Address: 240 W Main St., P.O. Box 454, Saxonburg, PA 16056

Phone: 724-352-4810

Website: www.southbutlerlibrary.org

Hours: 10 a.m. to 7 p.m. Monday to Thursday; 10 a.m. to 6 p.m. Friday; 10 a.m. to 5 p.m. Saturday; closed Sunday

Address: 227 S. High St., Zelienople, PA 16063

Phone: 724-452-9330

Website: www.zelienoplelibrary.org

College libraries

Hours: 8 a.m. to 4 p.m. Monday to Friday; closed Saturday and Sunday

Address: 107 College Drive, Butler, PA 16002

Phone: 724-284-8511

Website: library.bc3.edu

Public access: Free. People who are not students at BC3 require library cards. Parking passes required to park on campus.

Hours: 8 a.m. to 4 p.m. Monday to Friday; closed Saturday and Sunday

Address: 104 Central Loop, Slippery Rock, PA 16057

Phone: 724-738-2058

Website: www.sru.edu/academics/bailey-library

Public access: Community members and nonuniversity patrons must pay a $10 fee for an individual membership that is good for one year to take out materials