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 filing of the Quarterly Report on Form 10-Q of
South Jersey Industries, Inc. (the "Company") for the period ended March 31,
2005, as filed with the Securities and Exchange Commission on the date hereof
(the "Report"), I, Edward J. Graham, Chief Executive Officer of the Company,
hereby certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to
Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of my
knowledge:

         (1) The Report fully complies with the requirements of Section 13(a) or
 Section 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/ Edward J. Graham
- ------------------------------------
Name:  Edward J. Graham
Title:  Chief Executive Officer
May 10, 2005