TCF FINANCIAL CORPORATION EXHIBIT 21 Subsidiaries of Registrant (As of March 17, 1999) NAMES UNDER WHICH SUBSIDIARY SUBSIDIARY STATE OF INCORPORATION DOES BUSINESS TCF Financial Insurance Illinois TCF Financial Insurance Agency Agency Illinois, Inc. Illinois, Inc. TCF Insurance TCF Financial Insurance Minnesota TCF Financial Insurance Agency Agency Wisconsin, Inc. Wisconsin, Inc. TCF Insurance TCF Financial Insurance Agency Minnesota TCF Financial Insurance Agency Michigan, Inc. Michigan, Inc. TCF Insurance GLB Agency TCF Financial Insurance Agency Minnesota TCF Financial Insurance Agency Colorado, Inc. Colorado, Inc. TCF Financial Insurance Agency, Inc. Minnesota TCF Financial Insurance Agency, Inc. TCF Insurance GLB Financial Insurance Agency Ohio GLB Financial Insurance Agency Ohio, Inc. Ohio, Inc. (fka: WNL Insurance Agency of Ohio) TCF Securities, Inc. Minnesota TCF Securities, Inc. GLB Securities (MI) TCF Foundation Minnesota TCF Foundation TCF Minnesota Financial Services, Inc. Minnesota TCF Minnesota Financial Services, Inc. TCB Air, Inc. Minnesota TCB Air, Inc. (fka: Twin City/Burnet, Inc.) TCF National Bank Minnesota United States TCF National Bank Minnesota TCF Consumer Financial Services, Inc. Minnesota TCF Consumer Financial Services, Inc. TCF Financial Services TCF Mortgage Corporation Minnesota TCF Mortgage Corporation TCFMC Holding Co. Minnesota TCFMC Holding Co. TCF Financial Services, Inc. Minnesota TCF Financial Services, Inc. NAMES UNDER WHICH SUBSIDIARY SUBSIDIARY STATE OF INCORPORATION DOES BUSINESS TCF Management Corporation Minnesota TCF Management Corporation North Star Title, Inc. Minnesota North Star Title, Inc. North Star Real Estate Services, Inc. Minnesota North Star Real Estate Services, Inc. TCF Agency Minnesota, Inc. Minnesota TCF Agency Minnesota, Inc. TCF Agency Minnesota TCF Insurance Agency Minnesota, Inc. (UT) TCF Agency Mississippi, Inc. Mississippi TCF Agency Mississippi, Inc. TCF Agency Mississippi TCF Agency Insurance Services, Inc. Minnesota TCF Agency Insurance Services, Inc. TCF National Properties, Inc. Minnesota TCF National Properties, Inc. TCF New York Investment, Inc. Minnesota TCF New York Investments, Inc. TCF Qwik, Inc. New York TCF Qwik, Inc. TCF Wisk, Inc. New York TCF Wisk, Inc. TCF Bolt, Inc. New York TCF Bolt, Inc. TCF Jump, Inc. New York TCF Jump, Inc. TCF Sped, Inc. New York TCF Sped, Inc. TCF Real Estate Financial Services, Inc. Minnesota TCF Real Estate Financial Services, Inc. Winthrop Resources Corporation Minnesota Winthrop Resources Corporation WINR Business Credit TCF Small Business Leasing TCF National Bank Wisconsin United States TCF National Bank Wisconsin Republic Capital Funding Corp. I Wisconsin Republic Capital Funding Corp. I TCF Agency Wisconsin, Inc. Wisconsin TCF Agency Wisconsin, Inc. TCF Portfolio Strategies, Inc. Minnesota TCF Portfolio Strategies, Inc. TCF National Bank Illinois United States TCF National Bank Illinois Capitol Equities Corporation Illinois Capitol Equities Corporation SFB Insurance Agency, Inc. Illinois SFB Insurance Agency, Inc. NAMES UNDER WHICH SUBSIDIARY SUBSIDIARY STATE OF INCORPORATION DOES BUSINESS Standard Financial Mortgage Illinois Standard Financial Mortgage Corporation Corporation TCF Agency Illinois, Inc. Illinois TCF Agency Illinois, Inc. Great Lakes National Bank United States Great Lakes National Bank Michigan Michigan GLB Service Corporation II Michigan GLB Service Corporation II GLB Properties, Inc. Michigan GLB Properties, Inc. Great Lakes Mortgage LLC Michigan Great Lakes Mortgage LLC Lakeland Group Insurance Agency, Inc. Michigan Lakeland Group Insurance Agency, Inc. 401 Service Corporation Michigan 401 Service Corporation TCF Colorado Corporation Colorado TCF Colorado Corporation TCF National Bank Colorado United States TCF National Bank Colorado TCF Agency Colorado, Inc. Colorado TCF Agency Colorado, Inc.