| name | image | Annual visitors | type | Circulation | date founded | city | administrative división | continent | Country | Inventory | latitude (°) | longitude (°) | Website | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Carnegie Library of Pittsburgh |  | 2,912,976 | 3,529,380 | 06/02/1890 | Pittsburgh | Pennsylvania | Americas | United States | 5,230,200 | 40.4333343506 | -79.9499969482 | Website | Map | |
| Hillman Library |  | 170,594 | 08/01/1968 | Pittsburgh | Pennsylvania | Americas | United States | 7,124,080 | 40.4426000000 | -79.9540000000 | Website | Map | ||
| Archives Service Center |  | Pittsburgh | Pennsylvania | Americas | United States | 40.4500007629 | -79.8833312988 | Website | Map | |||||
| Allegheny County Library Association | 1991 | Pittsburgh | Pennsylvania | Americas | United States | 40.4407000000 | -80.0351000000 | Website | Map | |||||
| Andrew Bayne Memorial Library |  | 05/1914 | Pittsburgh | Pennsylvania | Americas | United States | 14,000 | 40.4833335876 | -80.0500030518 | Website | Map |