Exhibit 23.1
Consent of Independent Registered Public Accounting Firm
We consent to the incorporation by reference in the Registration Statements (Form S-8 Nos. 333-159576 and 333-179620) pertaining to Packaging Corporation of America Retirement Savings Plan for Salaried Employees of our report dated June 27, 2013, with respect to the financial statements and supplemental schedule of Packaging Corporation of America Retirement Savings Plan for Salaried Employees included in this Annual Report (Form 11-K) for the year ended December 31, 2012.
| /s/ Ernst & Young LLP |
Chicago, Illinois
June 27, 2013