Exhibit 99.1

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COSTCO WHOLESALE CORPORATION REPORTS FOURTH QUARTER AND FISCAL YEAR 2010

OPERATING RESULTS AND SEPTEMBER SALES RESULTS

ISSAQUAH, Wash., October 6, 2010 - Costco Wholesale Corporation (Nasdaq: COST) announced today its operating results for the 16 weeks (fourth quarter) and the 52 weeks (fiscal year) ended August 29, 2010, and its September sales results.

Net sales for the fiscal 2010 fourth quarter, the 16 weeks ended August 29, 2010, were $23.59 billion, an increase of eight percent from $21.89 billion in the 16-week fourth quarter of fiscal 2009 ended August 30, 2009. Net sales for the 52-week fiscal year 2010 were $76.25 billion, an increase of nine percent from $69.89 billion in the 52-week fiscal year 2009 ended August 30, 2009.

Comparable sales for the 16-week fiscal fourth quarter and the 52-week fiscal year 2010 were as follows:

 

     16 Weeks     52 Weeks  

U.S.

   4   4

International

   14   19

Total Company

   6   7
            

Comparable sales for the 16-week and 52-week periods, excluding the positive impacts from gasoline inflation and the strengthening of foreign currencies (primarily in Canada and Korea), were as follows:

 

     16 Weeks     52 Weeks  

U.S.

   3   2

International

   8   8

Total Company

   4   4
            

Net income for the fourth quarter of fiscal 2010 was $432 million, or $.97 per diluted share, compared to $374 million, or $.85 per diluted share, during the fourth quarter of fiscal 2009.

Net income for fiscal 2010 was $1.30 billion, or $2.92 per diluted share, compared to $1.09 billion, or $2.47 per diluted share, during fiscal year 2009.

For the five-week reporting month of September, ended October 3, 2010, the Company reported net sales of $7.51 billion, an increase of ten percent from $6.84 billion during the similar five-week period of the prior year. This year’s five-week period includes sales from the Company’s Mexico joint venture, as the Company began consolidating its Mexico operations on a prospective basis beginning with its 2011 fiscal year on August 30, 2010, due to the adoption of a new accounting standard. Total sales for the five-week period excluding Mexico sales reflected a seven percent increase over the similar five-week period of the prior year.


The following information was filed by Costco Wholesale Corp New (COST) on Wednesday, October 6, 2010 as an 8K 2.02 statement, which is an earnings press release pertaining to results of operations and financial condition. It may be helpful to assess the quality of management by comparing the information in the press release to the information in the accompanying 10-K Annual Report statement of earnings and operation as management may choose to highlight particular information in the press release.

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