EXHIBIT 21.1 ITRON SUBSIDIARIES AND AFFILIATED COMPANIES Itron, Inc. (Washington) Corporate Headquarters 2818 N. Sullivan Rd. Spokane, WA. 99216-1897 P.O. Box 15288 Spokane, WA. 99215-5288 Itron Canada, Ltd. (Canada) 160 Wilkinson Rd., #22 Brampton, ON. L6T 4Z4 Itron S.A. (France) Immeuble Merblanc 1, rue du Port au Prince 38200 Vienne, Lyon, France Itron Ltd. (England) Kilnbrook House Rose Kiln Lane Reading, Berkshire RG2 0BY United Kingdom Itron Australisia Pty Ltd. (Australia) BHP Building Level 6, 55 Sussex Street Sydney, NSW 2000 Australia Utility Translation Systems, Inc. (North Carolina) 200 UTS Centre 5909 Falls of the Neuse Road Raleigh, North Carolina, 27609 Design Concepts, Inc. (Idaho) 679 North Five Mile Road Boise, ID 83713 Itron Manufacturing, Inc. 2818 N. Sullivan Rd. Spokane, WA. 99216-1897 P.O. Box 15288 Spokane, WA. 99215-5288 Itron Minnesota, Inc. 2401 North State Street Waseca, MN 56093