SUBSIDIARIES Exhibit 21 State of % of Voting Name of Corporation Incorporation Securities Owned Advertising Distributors of Maryland, Inc. Maryland 100 Baltimore Press Company Delaware 100 Direct Market Concepts, Inc. Florida 100 The Flyer Publishing Corporation Florida 100 HTS, Inc. Connecticut 100 Harte-Hanks Shoppers, Inc. California 100 Harte-Hanks Community Newspapers, Inc. Texas 100 Harte-Hanks Direct Mail/California, Inc. California 100 Harte-Hanks Limited (1) United Kingdom 100 Harte-Hanks Television, Inc. Delaware 100 Independent Publishing Company South Carolina 100 Jordan Dennis Company, Inc. Massachusetts 100 Mid-America CDM, Inc. Ohio 100 NSO, Inc. Ohio 100 Northern Comprint Co. California 100 Pennysaver Publications, Inc. Texas 100 Potpourri Shopper, Inc. California 100 RMH Research, Inc. New Jersey 100 Shopper's Guide, Inc. Arizona 100 Southern Comprint Co. California 100 Urban Data Processing, Inc. Massachusetts 100 (1) Owned by Urban Data Processing, Inc. 91