PAGE EXHIBIT 21 SELECTIVE INSURANCE GROUP, INC. SUBSIDIARIES Jurisdiction Percentage in which voting securities Name organized Parent owned - ----- ------------ ------ ----------------- Selective Insurance Selective Insurance Company of America New Jersey Group, Inc. 100% Selective Way Selective Insurance Insurance Company New Jersey Group, Inc. 100% Selective Insurance Company of the Selective Insurance Southeast North Carolina Group, Inc. 100% Selective Insurance Company of South Selective Insurance Carolina South Carolina Group, Inc. 100% Wantage Avenue Holding Company Selective Insurance Inc. New Jersey Company of America 100% Niagara Exchange Selective Insurance Corporation Delaware Group, Inc. 100% NIEX Funding Corporation New York Niagara Exchange Corp. 100% Selective Insurance Company of New York New York Niagara Exchange Corp. 87% Selective Technical Administrative Selective Insurance Resources, Inc. New Jersey Group, Inc. 100% Selective Way Insurance Company (75%) Selective Insurance Company Alta Services LLC New Jersey of the Southeast (25%) N/A