At the time of the 2006 National Census, the county's population was 132,094 in 31,977 households.[4] The following census in 2011 counted 131,934 people in 37,029 households.[5] The 2016 census measured the population of the county as 125,341 in 38,446 households.[2]
Administrative divisions
Sarab County's population history and administrative structure over three consecutive censuses are shown in the following table.