Devlethan is a neighborhood in Soma District, in Manisa Province, Türkiye. Devlethan lies at 471 m above sea level, in the Madra mountains. It has 69 inhabitants. The nearest city is Soma, 18.6 km to the southeast. Among the landmarks around are Pergamon (36 km), Allianoi (19.4 km) and Sevişler Dam (8.6 km).