Exhibit 21.1

Subsidiaries of the Registrant

•	Dixie Container Corporation
		State of Incorporation:	Virginia
		Other trade names used:	Packaging Corporation of Ohio
•	PCA Hydro, Inc.
		State of Incorporation:	Delaware
		Other trade names used:	None
•	Packaging Corporation of Illinois
		State of Incorporation:	Delaware
		Other trade names used:	Acorn Corrugated Box Company
•	Packaging Corporation of Chicago
		State of Incorporation:	Delaware
		Other trade names used:	Elwood Packaging Inc.
•	PCA International, Inc.
		State of Incorporation:	Delaware
		Other trade names used:	None
	•	PCA International Services, LLC
		State of Incorporation:	Delaware
		Other trade names used:	None
	•	PCAI de Mexico S. de R.L. de C.V.
		State of Incorporation:	Sonora, Mexico
		Other trade names used:	None
•	Packaging Corporation of Asia, Limited
		State of Incorporation:	Hong Kong
		Other trade names used:	None
•	Packaging Credit Company, LLC
		State of Incorporation:	Delaware
		Other trade names used:	None
	•	Packaging Receivables Company, LLC
		State of Incorporation:	Delaware
		Other trade names used:	None