EXHIBIT 23 INDEPENDENT AUDITORS' CONSENT The Board of Directors Selective Insurance Group, Inc.: We consent to incorporation by reference in the registration statements (No.'s 333-10477, 333-97799, 33-22450, 333-37501 and 333-10465) on Form S-8, and the registration statements (No.'s 2-80881, 33-30833 and 333-101489) on Form S-3 of Selective Insurance Group, Inc. and its subsidiaries of our report dated February 5, 2003, relating to the consolidated balance sheets of Selective Insurance Group, Inc. and its subsidiaries as of December 31, 2002 and 2001, and the related consolidated statements of income, stockholders' equity and cash flows for each of the years in the three-year period ended December 31, 2002, and all related schedules, which report appears in, the December 31, 2002 annual report on Form 10-K of Selective Insurance Group, Inc. and its subsidiaries. /s/ KPMG LLP New York, New York March 19, 2003