city, Lee and Russell counties, seat (1935) of Russell county, eastern Alabama, U.S., about 25 miles (40 km) southeast of Opelika. The city is a port on the Chattahoochee River, opposite Columbus, Georgia. Incorporated in 1883 as Brownville, it was renamed in 1889 for the old Phoenix Mills in Columbus. In 1923 it was consolidated with Girard (settled about 1820). The last American Civil War battle east of the Mississippi River was fought there (April 16, 1865), when it and Columbus were captured by Union forces. In the 1940s and early 1950s Phenix City was known as a centre of prostitution, gambling, crime, and corruption. After the assassination of antivice crusader Albert Patterson (a nominee for Alabama attorney general) in 1954, martial law was declared in the city, and Patterson's movement to clean up the community was carried on by his son, John, who later became the governor of Alabama (1959–63).

Phenix City's manufactures include paperboard, textiles, and bricks. The city is home to Chattahoochee Valley Community College (1973) and Troy State University Phenix City (1975). Nearby in Georgia is Fort Benning (a military reservation); south of the city is Fort Mitchell National Cemetery, which has archaeological sites as well as graves of military veterans. Pop. (1990) 25,312; (2000) 28,265.