Each year, the Board of Library Trustees approves an annual library budget. Oak Park property owners currently pay roughly 5% of their total Cook County property tax bill to the library. Nearly all (96%) of the library’s operating budget comes from property taxes (0.0366% comes from fees, and 0.00291% comes from grants and gifts).

- See the 2025 budget (pdf), approved at the board’s October 22, 2024 regular meeting.
- Monthly financial statements are included in meeting materials, available via oppl.org/board.
- State of Illinois Public Act 102-0265 mandates that specified taxing districts, including the library, make a good-faith effort to collect and publish certain demographic information from vendors and/or subcontractors that do business with the library. View the most recent results received from vendors »
Audited financial statements
- Typically completed in the fall of the following year, audited financial statements are available as PDFs.
- For more information, contact Director of Finance and Human Resources Billy Treece at billyt@oppl.org.
Related links
- Illinois Municipal Retirement Fund: Employer cost and participation information