EXHIBIT 21 SUBSIDIARIES OF THE REGISTRANT Parent - ------ Tri-County Financial Corporation Percentage State of Subsidiaries Owned Incorporation - ------------ ----- ------------- Community Bank of Tri-County 100% Maryland Community Mortgage Corporation of Tri-County (1) 100% Maryland Tri-County Federal Finance One (1) 100% Maryland - ----------------- (1) Wholly-owned subsidiary of Community Bank of Tri-County.