Naqadeh County () is in West Azerbaijan province, Iran. The capital of the county is the city of Naqadeh. At the 2006 census, the county's population was 117,831 in 27,937 households. The following census in 2011 counted 121,602 people in 33,684 households. At the 2016 census, the county's population was 127,671 in 37,481 households. Etymology Naqadeh is the current name of the county (and its main town). The former name, known as Solduz (also spelled Sulduz, in Kurdish: Sundus), in reference to the Mongol Sulduz tribe, may have replaced an older name (now lost) during the reign of the Ilkhanid ruler Ghazan in 1303. History In 1303, during the reign of Ilkhanid ruler Ghazan, the area comprising Naqadeh County was distributed in fiefs. According to the orientalist Vladimir Minorsky (died 1966), citing the 16th-century Kurdish prince and writer Sharafkhan Bidlisi, during the rule of the Turkoman Aq Qoyunlu and Qara Qoyunlu (in about the 15th century), "i.e. Jong after the Čōbānīs had disappeared", the Kurds of the Mukri (Mokri) tribe occupied the county of Naqadeh, and its old inhabitants were most likely "reduced to servitude". Minorsky, citing a mutilated and undated part of Bidlisi's work, narrates that a certain Budak of the Kurdish Baban tribe captured the county from the Qizilbash. This event may refer to one of the abrupt outbursts of skirmishes which occurred on the Safavid frontier. In 1828, following the Treaty of Turkmenchay, Iranian crown prince Abbas Mirza handed over the territory of the county as a fief to 800 Turkic Qarapapaq families and these new settlers, in return, had to have 400 horsemen ready for disposal for the government. In this period, the county had a population of 4–5,000 of both Kurds and Muqaddam Shia Azerbaijanis. The town would gradually fall into the hands of the Azerbaijanis. The state-supported Qarapapaq consolidated their power quickly by attacking the Mangur and Zerza tribes. By the early 20th century, the county consisted of 123 villages and small towns, which altogether numbered 8,000 families. The canton of Mamad-Shah is located in the southeastern-most corner of the county, the name of which is mentioned in the Sharafnama of Sharafkhan Bidlisi. In the early 20th century, the inhabitants of this canton were members of the Turkic Shamsaddihlu tribe. Members of the tribe had arrived in Qajar Iran with their chief Masi Beg, and were given 3 villages inhabited by 100 families of