Capraia, also known as Capraja (and Capraria in ancient times), is an Italian island in the Tuscan Archipelago, which falls within the Tyrrhenian Sea. The island is a part of the Livorno province, and boasts only 7.5 square miles of land. As of 1872, 2.5 miles, or one-third, of that land is a dedicated agricultural penal colony. The island is 21 miles northwest of Elba. As of 1991, its population was 267.