EXHIBIT 99.1 PRESS RELEASE CONTACT: DAVID S. HICKMAN Telephone: (517) 423-1700 Date: September 14, 2004 FOR IMMEDIATE RELEASE UNITED BANCORP, INC. INCREASES CASH DIVIDEND TECUMSEH -- On September 7, 2004, the board of directors of United Bancorp, Inc., parent company of United Bank & Trust and United Bank & Trust - Washtenaw, declared a third quarter cash dividend of 35 cents per share, payable October 29, 2004, to shareholders of record October 11, 2004. This represents an increase from 34 cents per share, which has been in effect since the third quarter of 2003.