Semnan County

Semnan County is in Semnan province, Iran. Its capital is the city of Semnan.

Population
At the time of the 2006 National Census, the county's population was 186,159 in 52,869 households. The following census in 2011 counted 182,260 people in 53,107 households, by which time Mehdishahr District had been separated from the county in the establishment of Mehdishahr County. At the 2016 census, the county's population was 196,521 in 52,011 households, by which time Sorkheh District had been separated from the county in the establishment of Sorkheh County.

Administrative divisions
Semnan County's population history and administrative structure over three consecutive censuses are shown in the following table.