EXHIBIT 99.1 Contact: David S. Hickman Telephone: (517) 423-1700 Date: March 17, 2005 FOR IMMEDIATE RELEASE UNITED BANCORP, INC., ANNOUNCES CASH DIVIDEND AND DECLARES STOCK DIVIDEND TECUMSEH - The board of directors of United Bancorp, Inc., parent company of United Bank & Trust and United Bank & Trust - Washtenaw, has declared a first quarter cash dividend of 35 cents per share, payable April 29, 2005, to shareholders of record April 8, 2005. In addition, the board declared a 5% stock dividend on the 2,365,656 shares outstanding, payable on May 31, 2005, to shareholders of record May 4, 2005. Fractional shares will not be issued, but will be paid in cash at a rate of $67.00 per share. ###