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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
•	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 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

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Exhibit 21.1

Subsidiaries of the Registrant