Columbia Bancorp (CBBO) 10-Q 2009 Q3 Quarterly report

EXHIBIT 32.1

CERTIFICATION PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Columbia Bancorp (the “Company”) on Form 10-Q for the quarter ended September 30, 2009, I, Terry L. Cochran, President and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company for the period certified.

/s/ Terry L. Cochran  

Terry L. Cochran 

President and Chief Executive Officer
(Principal Executive Officer)
November 16, 2009