Exhibit 32.1

                            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 Annual Report on Form 10-K of Century Bancorp, Inc.( the
"Company") for the period ended December 31, 2003, as filed with the Securities
and Exchange Commission on the date hereof (the "Report"), each of the
undersigned, certifies, to the best knowledge and belief of the signatory,
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)  The information contained in the Report fairly presents, in all
          material respects, the financial condition and results of operations
          of the Company.



                                        /s/  Marshall M. Sloane
                                        ----------------------------------------
                                             Marshall M. Sloane
                                             Chairman, President and CEO

                                        Date: March 9, 2004