EX-21.1 2 pkg-ex21_1.htm EX-21.1

Exhibit 21.1

Subsidiaries of the Registrant *

| State or Other Jurisdiction of Incorporation or Organization
Packaging Corporation of America (100%) | Delaware
PCA International Inc. (100%) | Delaware
PCA International Services, LLC (100%) | Delaware
PCA Hydro Inc. (100%) | Delaware
Packaging Corporation of Asia, Limited (100%) | Hong Kong
PCA Central California Corrugated, LLC (100%) | Delaware
PCA Michigan Acquisition, LLC (100%) | Delaware
Packaging Asset Holdings, LLC (100%) | Delaware
Hexacomb Corporation (100%) | Illinois
Louisiana Timber Procurement Company, LLC (50%) | Delaware
Boise White Paper, LLC (100%) | Delaware
International Falls Power Company (100%) | Delaware
Minnesota, Dakota & Western Railway Company (100%) | Minnesota
B C T, Incorporated (100%) | Delaware

* The names of some of our foreign subsidiaries have been omitted. These unnamed subsidiaries, considered in the aggregate as a single subsidiary, would not constitute a significant subsidiary, as defined in Regular S-X, Rule 1-02 (w).