Exhibit 32-b

                     TRUSTMARK CORPORATION AND SUBSIDIARIES

                    CERTIFICATION OF CHIEF FINANCIAL OFFICER
                       PURSUANT TO 18 U.S.C. SECTION 1350
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In  connection  with the  Annual  Report on Form 10-K of  Trustmark  Corporation
(Trustmark)  for the year ended  December 31, 2004 as filed with the  Securities
and  Exchange  Commission  on the date hereof (the  Report),  I, Zach L. Wasson,
Treasurer  (Principal Financial Officer) of Trustmark,  certify,  pursuant to 18
U.S.C.  Section 1350, as adopted  pursuant to Section 906 of the  Sarbanes-Oxley
Act of 2002, that, to my knowledge:

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

     2)   The  information  contained  in the  Report  fairly  presents,  in all
          material respects,  the financial  condition and results of operations
          of  Trustmark  as of the dates and for the  periods  expressed  in the
          Report.

BY:      /s/ Zach L. Wasson
         ---------------------
         Zach L. Wasson
         Treasurer (Principal
         Financial Officer)

DATE:    March 16, 2005