Phenix City (fēˈnĭks) [key], city (1990 pop. 25,312), a seat of Russell co., E Ala., on the Chattahoochee River opposite Columbus, Ga., in a cotton area; inc. 1883. Textiles are manufactured there. In 1954 the state governor placed Phenix City under martial law for about five months—a result of the corruption that had long prevailed in the city. Nearby is Fort Benning military reservation (in Ga.) as well as the site of U.S. Fort Mitchell (1811–37).