Exhibit 21

Direct and Indirect Operating Subsidiaries
of FirstMerit Corporation*

Citizens Savings Corporation of Stark County

FirstMerit Bank, National Association

     • FirstMerit Insurance Agency, Inc.

     • FirstMerit Insurance Group, Inc.

     • FirstMerit Credit Services Company

     • FirstMerit Mortgage Corporation

     • FirstMerit Mortgage Reinsurance Company, Inc. (Hawaii)

     • FirstMerit Moss Creek Ventures, LLC

     • FirstMerit Securities, Inc.

     • FirstMerit Wealth Management Services, Inc.

     • FirstMerit Title Agency, Ltd.

     • FMRC, Inc. (Delaware)

     • FMSC, Inc. (Delaware)

     • FMTP, LLC (Delaware)

     • Mobile Consultants, Inc.

     • Signal Finance Company

FirstMerit Capital Trust I (Delaware)

FirstMerit Community Development Corporation

FMT, Inc. (Delaware)

SF Development Corp.

* Unless otherwise indicated, state of formation is Ohio.