1 EXHIBIT 21 SUBSIDIARIES OF PARK NATIONAL CORPORATION State or Other Jurisdiction of Name Incorporation or Organization ---- ------------------------------ The Park National Bank ("PNB") United States (federally-chartered national banking association) Park Investments, Inc. (NOTE: is a wholly-owned subsidiary Delaware of PNB) Scope Leasing, Inc. (NOTE: is a wholly-owned subsidiary of Ohio PNB) The Richland Trust Company ("Richland") Ohio Richland Investments, Inc. (NOTE: is a wholly-owned Delaware subsidiary of Richland) Century National Bank ("Century") United States (federally-chartered national banking association) Zane-Fed Services, Incorporated (NOTE: is a wholly-owned Ohio subsidiary of Century) MFS Investments, Inc. (NOTE: is a wholly-owned subsidiary Delaware of Century) The First-Knox National Bank of Mount Vernon ("FKNB") United States (federally-chartered national banking association) First-Knox, Inc. (NOTE: is a wholly-owned subsidiary of Ohio FKNB)