Koçoğlu is a neighborhood in Manyas District, in Balıkesir Province, Türkiye. Koçoğlu lies at 337 m above sea level, 1.3 km from the Anatolian plateau mountains. It has 317 inhabitants. The nearest city is Susurluk, 24 km to the east. Among the landmarks around are Dascylium (25 km), Manyas Dam (8.7 km) and Cyzicus (48 km).