Exhibit 32.2


                                             CERTIFICATION 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 accompanying Annual Report of Acxiom Corporation (the Company) on Form 10-K for the fiscal
year ended March 31, 2005 as filed with the Securities and Exchange Commission on the date hereof (the Report),
I, Rodger S. Kline, Chief Finance & Adminstration Leader (principal financial officer) of the Company, certify,
pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, to my knowledge,
that:

        (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 result of operations of the Company.



  /s/ Rodger S. Kline
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Rodger S. Kline
Chief Finance & Administration Leader
(principal financial officer)
June 13, 2005