Allegheny County Library

Find Allegheny County Pennsylvania libraries, such as state, town, city, public, private, college and university library branches. Libraries provide information on applications, borrowing books, ebooks, library programs, online databases and research.


Allegheny Campus Library 808 Ridge Avenue Pittsburgh PA 15212 412-237-2585


Allegheny County Library Association 22 Wabash Street Pittsburgh PA 15220 412-921-1123

Allegheny County S Campus Library 1750 Clairton Road West Mifflin PA 15122 412-469-6295

Baldwin Borough Library 41 Macek Drive Pittsburgh PA 15227 412-885-2255

C C Mellor Memorial Library 1 Pennwood Avenue Pittsburgh PA 15218 412-731-0909

Carnegie Library of Homestead 510 East 10th Avenue Homestead PA 15120 412-462-3444

Carnegie Library of Pittsburgh 130 South Whitfield Street Pittsburgh PA 15206 412-363-8232

Carnegie Library of Pittsburgh 1910 Broadway Avenue Pittsburgh PA 15216 412-563-2900

Carnegie Library of Pittsburgh 5801 Forbes Avenue Pittsburgh PA 15217 412-422-9650

Carnegie Library of Pittsburgh 1811 Brownsville Road Pittsburgh PA 15210 412-882-3897

Carnegie Library of Pittsburgh - Brookline Branch 708 Brookline Boulevard Pittsburgh PA 15226 412-561-1003

Carnegie Library of Pittsburgh - Hazelwood 4901 Second Avenue Pittsburgh PA 15207 412-421-2517

Carnegie Library of Pittsburgh - Hill District 2177 Centre Avenue Pittsburgh PA 15219 412-281-3753

Carnegie Library of Pittsburgh - Homewood 7101 Hamilton Avenue Pittsburgh PA 15208 412-731-3080

Carnegie Library of Pittsburgh - Mt. Washington 315 Grandview Avenue Pittsburgh PA 15211 412-381-3380

Carnegie Library of Pittsburgh - Woods Run Branch 1201 Woods Run Avenue Pittsburgh PA 15212 412-761-3730

Carnegie Library of Pittsburgh – Lawrenceville Branch 279 Fisk Street Pittsburgh PA 15201 412-682-3668

Castle Shannon Library 3677 Myrtle Avenue Pittsburgh PA 15234 412-563-4552

Downtown and Busines Branch Library 612 Smithfield Street Pittsburgh PA 15222 412-281-7141

Green Tree Public Library 10 West Manilla Avenue Pittsburgh PA 15220 412-921-9292

How are Public Libraries funded?

The vast majority of funding that supports the operation of Public Libraries comes from county and local governments. At times, grant funding may be available for specific programs, projects, or capital improvements. Fees for special programs and services account for a relatively small percentage of revenue for Public Libraries.

What are the Friends of the Library?

Friends of the Library are organizations formed to support their local Public Libraries. They typically establish themselves as independent, non-profit organizations that conduct fundraising to supplement Library resources and organize Library related events.

What is the Dewey Decimal system?

The Dewey Decimal system is a classification system used in many libraries to organize their books. The classification number allows for books to easily be located or returned to their assigned place in the library. The system is constantly revised to keep up with changes in the libraries.