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Karatoulas (Greek: Καράτουλας) is a village in the municipality of Megalopoli, Arcadia, Greece. It is situated on a hillside in the southwestern foothills of the Mainalo mountains, at about 750 m elevation. It is 2 km northwest of Vangos, 3 km southeast of Lykochia and 9 km northeast of Megalopoli. Karatoulas had a population of 82 in 2001.