Savadkuh County (, Ŝahrestāne Sawādkuh; also Savadkooh and Savadkouh) is in Mazandaran province, Iran. The capital of the county is the city of Pol Sefid. At the 2006 census, the county's population was 66,430 in 17,918 households. The following census in 2011 counted 64,378 people in 19,506 households. Shirgah District was separated from the county to form North Savadkuh County in 2013. At the 2016 census, Savadkuh County's population was 43,913 in 14,956 households. Covering an area of , Savadkuh is at the centre of Mazandaran Province. It is limited northwestward by North Savadkuh County, westward by Babol County, eastward by Sari County, southward by the Alborz mountain range and Tehran province, and southeast by Semnan province. The main part of this county is located in a valley, in the central Alborz region, where the Tâlâr river passes through it. The tallest summit of Savadkuh, is Khero-Naru, with a height of . The most important rivers flowing in this city are Tâlâr and Babol-rud, which originate from the Alborz mountain range standing southeast and southwest of Savadkuh. These rivers irrigate the farmlands in Babol, Babolsar and Qaemŝahr. Including two areas of mountain in the north and foothill in the south, the mountainous area has a temperate and humid climate, and the weather in the south is dry and cold. Savadkuh is the birthplace of Reza Shah Pahlavi, the founder of the Pahlavi dynasty History Darius I, the great Achaemenid Persian monarch in his famous inscription in Behistun, mentions Pâtišvâreš as one of the territories under his rule. This Old Persian form subsequently became Middle Persian Pateŝxârgar and, following the Arab conquest, Perso-Arabic Faršavâdjar. The Greek historiographer Strabo records this name as Prâxovâtrâs. In his inscription at Ka'ba-ye Zartosht, the second Sassanid Persian monarch Shapur I, refers to the region as Pâdešxâr. In the Book of Deeds of Ardashir, Son of Babag, it is Patešxâr again. Ibn Isfandiyar and Mir Zahir al-Din Mar'ashi – the old geographers of Mazandaran – give its name as Patešxârgar as a large area in present-day Mazandaran, including Azerbaijan, Gilan, Tabaristan, Kumesh and Damghan. Mohammad Hassan Khan (Etemad Saltaneh's Tadvin Fi Ahval Jebal Shervin, History of Savadkuh) mentions it as the old name of the ancient area of Savâdkuh. They believe that the word "Savad" was distorted and changed to Faršavât. Savadkuh enjoyed great importance in the history of Tabaristan and even in Iran. Its tall