Packaging Corporation of America (NYSE: PKG), will hold a conference call on Tuesday, January 24, 2012 at 10:00 a.m. (Eastern Time) to discuss fourth quarter and full year 2011 results. Fourth quarter and full year 2011 earnings will be released after the market closes on January 23, 2012.

For access to the conference call on January 24th, please dial (866) 244-4637 (U.S. and Canada) or (703) 639-1179 (International) by 9:45 a.m. (Eastern Time). The conference call leader will be Mark Kowlzan.

A replay of the call will also be available from 1:00 p.m. (Eastern Time) on January 24, 2012 until 11:59 p.m. (Eastern Time) on February 7, 2012. To access the recording, please dial (888) 266-2081 (U.S. and Canada) or (703) 925-2533 (International). The passcode is 1564222.

This call will also be webcast and can be accessed at PCA’s website at: www.packagingcorp.com.

PCA is the fifth largest producer of containerboard and corrugated packaging products in the United States with sales of $2.44 billion in 2010. PCA operates four paper mills and 71 corrugated product plants in 26 states across the country.