EXHIBIT 21 SUBSIDIARIES STATE OR OTHER JURISDICTION OF PERCENTAGE PARENT INCORPORATION OWNERSHIP - ------ ------------- --------- HCB Bancshares, Inc. Oklahoma Subsidiaries (1) - ---------------- HEARTLAND Community Bank United States 100% Subsidiary of HEARTLAND Community Bank - -------------------------------------- HCB Properties, Inc. Arkansas 100% - ---------- (1) The assets, liabilities and operations of the subsidiaries are included in the Consolidated Financial Statements contained in Item 8 hereof.