Costco Wholesale Corporation reported net sales of $7.14 billion for the month of May, the four weeks ended May 29, 2011, an increase of 17 percent from $6.09 billion during the similar period last year.


This year’s four-week period included sales from the company’s Mexico joint venture, as the company began consolidating its Mexico operations beginning with its 2011 fiscal year (on August 30, 2010); otherwise the net sales increase would have been 14 percent.

For the thirty-nine weeks of its reporting period ended May 29, 2011, the company reported net sales of $64.75 billion, an increase of 13 percent from $57.17 billion during the similar period last year; excluding Mexico sales, the increase would have been 10 percent.


Comparable sales for the four-week and thirty-nine-week periods ended May 29, 2011, including Mexico operations for last year and this year, were as follows:


                                      4 Weeks   39 Weeks
                                    ———- ———-

                   U.S.                 11%        7%
                   International        21%        15%

                   Total Company        13%        9%
                                    ========== ==========
Comparable sales for the four-week and thirty-nine-week periods ended May 29, 2011, including Mexico operations for last year and this year, were as follows:
                                      4 Weeks   39 Weeks
                                    ———- ———-

                   U.S.                 6%         4%
                   International        12%        10%

                   Total Company        7%         6%
                                    ========== ==========