A new cultivar of hybrid Coreopsis named ‘Sophia’ characterized by its compact plant habit reaching an average of 45 cm in height and 45 cm in width, its near sterility with a floriferous and long bloom season that does not require deadheading with bloom commences in late June and lasts until frost in Kensington, Conn., its medium sized inflorescences with tube-shaped ray florets that are light yellow in color, its lack of requirement for vernalization to initiate flowering, its cold hardiness to at least U.S.D.A. Zone 5, and its resistance to powdery mildew and leaf spot.