At the time of the 2006 National Census, Hesami's population was 2,348 in 569 households, when it was a village in Sarchehan Rural District of the former Sarchehan District of Bavanat County. The following census in 2011 counted 2,826 people in 771 households, by which time the village had been elevated to the status of a city. The 2016 census measured the population of the city as 3,131 people in 1,000 households.
After the census, the district was separated from the county in the establishment of Sarchehan County, and Hesami was transferred to the new Central District.
↑Jahangiri, Ishaq (c. 2023) [Approved 4 February 1400]. National divisions in the Central District of Sarchehan County, Fars province. qavanin.ir (Report) (in Persian). Ministry of the Interior, Council of Ministers. Letter 136331. Archived from the original on 15 September 2023. Retrieved 15 September 2023– via Laws and Regulations Portal of the Islamic Republic of Iran.
↑Rahimi, Mohammadreza (4 January 2011). "Hesami city was added to the map of national divisions". dolat.ir (in Persian). Ministry of the Interior, Political and Defense Commission. Archived from the original on 15 March 2017. Retrieved 9 November 2023– via Secretariat of the Government Information Council.