CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350,
                                   AS ADDED BY
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

                                                                    Exhibit 32.0

      In connection with the Quarterly Report of BostonFed Bancorp, Inc. (the
"Company") on Form 10-Q for the period ending March 31, 2004 as filed with the
Securities and Exchange Commission on the date hereof (the "Report"), the
undersigned certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to
Section 906 of the Sarbanes-Oxley Act of 2002, 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.    To our knowledge, the information contained in the Report fairly presents,
      in all material respects, the financial condition and results of
      operations of the Company as of and for the period covered by the Report.

Dated: August 5, 2004                     /s/  David F. Holland
                                          ---------------------
                                          David F. Holland
                                          Chief Executive Officer

                                          /s/  John A. Simas
                                          ---------------------
                                          John A. Simas
                                          Chief Financial Officer