Kalamata is the second most populous city of the Peloponnese peninsula in southern Greece after Patras, and the largest city of the homonymous administrative region. As the capital and chief port of the Messenia regional unit, it lies along the Nedon River at the head of the Messenian Gulf. The 2021 census recorded 72,906 inhabitants for the wider Kalamata Municipality, of which 66,135 resided in the municipal unit of Kalamata, and 58,816 in the city proper.