ST. LOUIS, Aug. 14 /PRNewswire-FirstCall/ -- The board of directors of Ameren Corporation (NYSE: AEE - News) today declared a quarterly dividend on its common stock of 38.5 cents per share.

The common share dividend is payable Sept. 30, 2009, to shareholders of record on Sept. 10, 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 Aug. 13, 2009. The Central Illinois Light Company (AmerenCILCO) preferred stock dividend is payable Oct. 1, 2009, to shareholders of record on Sept. 4, 2009. The Central Illinois Public Service Company (AmerenCIPS) preferred stock dividend is payable Dec. 31, 2009, to shareholders of record on Dec. 9, 2009. The Illinois Power Company (AmerenIP) preferred stock dividend is payable Nov. 2, 2009, to shareholders of record on Oct. 13, 2009. The Union Electric Company (AmerenUE) preferred stock dividend is payable Nov. 15, 2009, to shareholders of record on Oct. 20, 2009.

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.