Exhibit 21

Direct and Indirect Operating Subsidiaries of FirstMerit Corporation

v Citizens Savings Corporation of Stark County (Ohio)¹ 

v FirstMerit Bank, National Association

- Cascade Holdings (Illinois)

- CPHCSUB, LLC (Ohio)

- CREPD, LLC (Ohio)

- DKG Audit Services, LLC

- Cumberland Trail Golf Course LLC (Ohio)¹ 

- FirstMerit Advisors, Inc. (Ohio)

- FirstMerit Community Development Corporation (Ohio)

- FirstMerit Equipment Finance, Inc. (Ohio)

- FirstMerit Financial Services, Inc. (Ohio)

- FirstMerit Insurance Agency, Inc. (Ohio)

- FirstMerit Insurance Group, Inc. (Ohio)

- FirstMerit Mortgage Corporation (Ohio)

- FirstMerit Mortgage Reinsurance Company, Inc. (Hawaii)

- FirstMerit-Moss Creek Ventures, LLC (Ohio)¹ 

- FirstMerit Securities, Inc. (Ohio)

- FirstMerit Title Agency, Ltd. (Ohio)

- FMRC, Inc. (Delaware)

- FMSC, Inc. (Delaware)¹ 

- Midwest Funding LLC (Delaware)

- Mobile Consultants, Inc. (Ohio)

v FirstMerit Capital Trust I (Delaware)¹ 

v FirstMerit Risk Management, Inc. (Vermont)

1 - These subsidiaries are inactive as December 31, 2015