Located in the eastern south-central US, Alabama ranks 29th in size among the 50 states.
The total area of Alabama is 51,705 sq mi (133,915 sq km), of which land constitutes 50,767 sq mi (131,486 sq km) and inland water 938 sq mi (2,429 sq km). Alabama extends roughly 200 mi (320 km) E-W; the maximum N-S extension is 300 mi (480 km). Alabama is bordered on the N by Tennessee; on the E by Georgia (with part of the line formed by the Chattahoochee River); on the S by Florida (with part of the line defined by the Perdido River) and the Gulf of Mexico; and on the W by Mississippi (with the northernmost part of the line passing through the Tennessee River).
Dauphin Island, in the Gulf of Mexico, is the largest offshore island. The total boundary length of Alabama is 1,044 mi (1,680 km). The state's geographic center is in Chilton County, 12 mi (19 km) SW of Clanton.