Exhibit 21

Direct and Indirect Operating Subsidiaries

of FirstMerit Corporation*

Citizens Savings Corporation of Stark County

FirstMerit Bank, National Association

•  Abell & Associates, Inc.

•  Alpha Equipment Group, Inc.

•  FirstMerit Insurance Agency, Inc.

•  FirstMerit Leasing 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

FirstMerit Credit Life Insurance Company (Arizona)

FMT, Inc. (Delaware)

SF Development Corp.

*  Unless otherwise indicated, state of formation is Ohio.