Devlet is a neighborhood in Ferizli District, in Sakarya Province, Türkiye. Devlet lies 8.9 km from the Akçakoca Dağları mountains. It has 3,165 inhabitants. The nearest city is Ferizli, 1.4 km to the south. Among the landmarks around are Sangarius Bridge (26 km), SM UC-13 (22 km) and Sakarya Museum (21 km).