Koçköy is a village in Şefaatli District, in Yozgat Province, Türkiye. Koçköy lies at 972 m above sea level, 9.6 km from the Anatolian plateau mountains. It has 55 inhabitants. The nearest city is Yozgat, 32 km to the north. Among the landmarks around are Hattusa (57 km), Pteria (32 km) and Gelingüllü Dam (21 km).