The Pascagoula map turtle is restricted to the
Pascagoula River system in the state of
Mississippi in the United States. It formerly included a population in the
Pearl River, but in 2010, that population was described as a separate species, the
Pearl River map turtle,
Graptemys pearlensis. The Pascagoula map turtle shares its range with the
yellow-blotched map turtle,
Graptemys flavimaculata. ==Etymology==