Aridaía (;
Bulgarian and
Macedonian Slavic:
S'botsko) is a town and a former
municipality in the
Pella regional unit,
Greece. Since the 2011 local government reform it is part of the municipality
Almopia, of which it is a municipal unit. It was the capital of the former
Almopia eparchy. It is located in the northwest corner of the Pella regional unit, bordering the southern part of the
Republic of Macedonia and the northeast corner of the
Florina regional unit. Its land area is . The population of Aridaia proper is 12,600, while that of the entire municipal unit is 20,213 (2001 census). Its largest other towns are Prómachoi (pop. 1,825), Sosándra (1,206), Ápsalos (1,178), Loutráki (1,163), Polykárpi (1,071), Tsákoi (1,020), Voreinó (871), and Χifianí (850). The municipal unit is divided into 17 communities.