ST. LOUIS, Oct. 9 /PRNewswire-FirstCall/ -- The board of directors of Ameren Corporation (NYSE: AEE) today declared a quarterly dividend on its common stock of 38.5 cents per share. The common share dividend is payable Dec. 31, 2009, to shareholders of record on Dec. 9, 2009.

Separately, the boards of directors of the following Ameren Corporation operating subsidiaries declared regular quarterly dividends on all classes of the subsidiaries' preferred stock on Oct. 8, 2009. The Central Illinois Light Company (AmerenCILCO) preferred stock dividend is payable Jan. 4, 2010, to shareholders of record on Dec. 4, 2009. The Central Illinois Public Service Company (AmerenCIPS) preferred stock dividend is payable March 31, 2010, to shareholders of record on March 10, 2010. The Illinois Power Company (AmerenIP) preferred stock dividend is payable Feb. 1, 2010, to shareholders of record on Jan. 11, 2010. The Union Electric Company (AmerenUE) preferred stock dividend is payable Feb. 15, 2010, to shareholders of record on Jan. 20, 2010.

With assets of approximately $23 billion, Ameren serves 2.4 million electric customers and one million natural gas customers in a 64,000-square-mile area of Missouri and Illinois.

SOURCE Ameren Corporation

Investors, Doug Fischer, +1-314-554-4859, or Media, Susan Gallagher, +1-314-554-2175, both of Ameren Corporation