Library holdings in numbers:
| Books | 893 094 |
| Journals | 210 356 |
| Manuscripts | 21 727 |
| Early imprints | 67 854 |
| Documents of Social Life | 329 584 |
| Cartography Department holdings | 29 329 |
| Microform Department holdings | 62 804 |
Museum of the Lubomirski Princes holdings
| Department of Art | ap. 200 000 |
| Numismatic Department | 120 994 |
Total: ap. 1.950.000 items